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/* Vuls - Vulnerability Scanner |
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Copyright (C) 2016 Future Corporation , Japan. |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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package scan |
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import ( |
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"bufio" |
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"encoding/json" |
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"fmt" |
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"net" |
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"regexp" |
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"strings" |
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"time" |
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"github.com/future-architect/vuls/config" |
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"github.com/future-architect/vuls/models" |
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"github.com/hashicorp/go-version" |
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"github.com/sirupsen/logrus" |
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"io/ioutil" |
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"net/http" |
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) |
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type base struct { |
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ServerInfo config.ServerInfo |
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Distro config.Distro |
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Platform models.Platform |
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osPackages |
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log *logrus.Entry |
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errs []error |
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} |
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//Command is for check dependence |
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type Command struct { |
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Command string |
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Name string |
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} |
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func (l *base) scanWp() (err error) { |
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if len(l.ServerInfo.WpPath) == 0 && len(l.ServerInfo.WpToken) == 0 { |
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return nil |
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} |
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if len(l.ServerInfo.WpPath) == 0 { |
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return fmt.Errorf("not found : WpPath") |
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} |
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if len(l.ServerInfo.WpToken) == 0 { |
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return fmt.Errorf("not found : WpToken") |
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} |
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cmd := Command{Command: "wp cli", Name: "wp"} |
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if r := exec(l.ServerInfo, cmd.Command, noSudo); !r.isSuccess() { |
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return fmt.Errorf("%s command not installed", cmd.Name) |
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} |
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var vinfos []models.VulnInfo |
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if vinfos, err = detectWp(l); err != nil { |
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return fmt.Errorf("Failed to scan wordpress: %s", err) |
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} |
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l.WpVulnInfos = map[string]models.VulnInfo{} |
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for _, vinfo := range vinfos { |
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l.WpVulnInfos[vinfo.CveID] = vinfo |
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} |
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return nil |
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} |
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//WpCveInfos is for wpvulndb's json |
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type WpCveInfos struct { |
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ReleaseDate string `json:"release_date"` |
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ChangelogURL string `json:"changelog_url"` |
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Status string `json:"status"` |
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LatestVersion string `json:"latest_version"` |
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LastUpdated string `json:"last_updated"` |
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Popular bool `json:"popular"` |
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Vulnerabilities []WpCveInfo `json:"vulnerabilities"` |
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Error string `json:"error"` |
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} |
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//WpCveInfo is for wpvulndb's json |
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type WpCveInfo struct { |
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ID int `json:"id"` |
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Title string `json:"title"` |
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CreatedAt string `json:"created_at"` |
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UpdatedAt string `json:"updated_at"` |
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PublishedDate string `json:"published_date"` |
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VulnType string `json:"vuln_type"` |
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References References `json:"references"` |
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FixedIn string `json:"fixed_in"` |
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} |
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//References is for wpvulndb's json |
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type References struct { |
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URL []string `json:"url"` |
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Cve []string `json:"cve"` |
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Secunia []string `json:"secunia"` |
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} |
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func detectWp(c *base) (vinfos []models.VulnInfo, err error) { |
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var coreVulns []models.VulnInfo |
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if coreVulns, err = detectWpCore(c); err != nil { |
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return nil, err |
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} |
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vinfos = append(vinfos, coreVulns...) |
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var themeVulns []models.VulnInfo |
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if themeVulns, err = detectWpTheme(c); err != nil { |
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return nil, err |
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} |
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vinfos = append(vinfos, themeVulns...) |
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var pluginVulns []models.VulnInfo |
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if pluginVulns, err = detectWpPlugin(c); err != nil { |
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return nil, err |
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} |
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vinfos = append(vinfos, pluginVulns...) |
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return vinfos, nil |
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} |
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func detectWpCore(c *base) (vinfos []models.VulnInfo, err error) { |
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cmd := fmt.Sprintf("wp core version --path=%s", c.ServerInfo.WpPath) |
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var coreVersion string |
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var r execResult |
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if r = exec(c.ServerInfo, cmd, noSudo); !r.isSuccess() { |
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return nil, fmt.Errorf("%s", cmd) |
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} |
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tmpCoreVersion := strings.Split(r.Stdout, ".") |
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coreVersion = strings.Join(tmpCoreVersion, "") |
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coreVersion = strings.TrimRight(coreVersion, "\r\n") |
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if len(coreVersion) == 0 { |
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return nil, fmt.Errorf("version empty") |
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} |
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url := fmt.Sprintf("https://wpvulndb.com/api/v3/wordpresses/%s", coreVersion) |
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var body []byte |
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if body, err = httpRequest(c, WpStatus{}, url); err != nil { |
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return nil, err |
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} |
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if vinfos, err = coreConvertVinfos(string(body)); err != nil { |
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return nil, err |
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} |
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return vinfos, nil |
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} |
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func coreConvertVinfos(stdout string) (vinfos []models.VulnInfo, err error) { |
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data := map[string]WpCveInfos{} |
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if err = json.Unmarshal([]byte(stdout), &data); err != nil { |
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var jsonError WpCveInfos |
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if err = json.Unmarshal([]byte(stdout), &jsonError); err != nil { |
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return nil, err |
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} |
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} |
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for _, e := range data { |
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if len(e.Vulnerabilities) == 0 { |
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continue |
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} |
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for _, vulnerability := range e.Vulnerabilities { |
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if len(vulnerability.References.Cve) == 0 { |
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continue |
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} |
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notFixedYet := false |
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if len(vulnerability.FixedIn) == 0 { |
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notFixedYet = true |
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} |
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var cveIDs []string |
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for _, cveNumber := range vulnerability.References.Cve { |
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cveIDs = append(cveIDs, "CVE-"+cveNumber) |
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} |
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for _, cveID := range cveIDs { |
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vinfos = append(vinfos, models.VulnInfo{ |
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CveID: cveID, |
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CveContents: models.NewCveContents( |
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models.CveContent{ |
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CveID: cveID, |
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Title: vulnerability.Title, |
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}, |
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), |
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AffectedPackages: models.PackageStatuses{ |
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{ |
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NotFixedYet: notFixedYet, |
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}, |
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}, |
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}) |
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} |
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} |
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} |
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return vinfos, nil |
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} |
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//WpStatus is for wp command |
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type WpStatus struct { |
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Name string `json:"name"` |
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Status string `json:"status"` |
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Update string `json:"update"` |
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Version string `json:"version"` |
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} |
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func detectWpTheme(c *base) (vinfos []models.VulnInfo, err error) { |
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cmd := fmt.Sprintf("wp theme list --path=%s --format=json", c.ServerInfo.WpPath) |
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var themes []WpStatus |
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var r execResult |
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if r = exec(c.ServerInfo, cmd, noSudo); !r.isSuccess() { |
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return nil, fmt.Errorf("%s", cmd) |
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} |
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if err = json.Unmarshal([]byte(r.Stdout), &themes); err != nil { |
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return nil, err |
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} |
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for _, theme := range themes { |
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url := fmt.Sprintf("https://wpvulndb.com/api/v3/themes/%s", theme.Name) |
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var body []byte |
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if body, err = httpRequest(c, theme, url); err != nil { |
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return nil, err |
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} |
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tmpVinfos, err := contentConvertVinfos(string(body), theme) |
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if err != nil { |
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return nil, err |
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} |
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vinfos = append(vinfos, tmpVinfos...) |
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} |
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return vinfos, nil |
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} |
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func detectWpPlugin(c *base) (vinfos []models.VulnInfo, err error) { |
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cmd := fmt.Sprintf("wp plugin list --path=%s --format=json", c.ServerInfo.WpPath) |
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var plugins []WpStatus |
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var r execResult |
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if r := exec(c.ServerInfo, cmd, noSudo); r.isSuccess() { |
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if err = json.Unmarshal([]byte(r.Stdout), &plugins); err != nil { |
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return nil, err |
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} |
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} |
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if !r.isSuccess() { |
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return nil, fmt.Errorf("%s", cmd) |
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} |
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for _, plugin := range plugins { |
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url := fmt.Sprintf("https://wpvulndb.com/api/v3/plugins/%s", plugin.Name) |
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var body []byte |
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if body, err = httpRequest(c, plugin, url); err != nil { |
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return nil, err |
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} |
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tmpVinfos, err := contentConvertVinfos(string(body), plugin) |
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if err != nil { |
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return nil, err |
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} |
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vinfos = append(vinfos, tmpVinfos...) |
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} |
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return vinfos, nil |
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} |
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func httpRequest(c *base, content WpStatus, url string) (body []byte, err error) { |
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token := fmt.Sprintf("Token token=%s", c.ServerInfo.WpToken) |
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var req *http.Request |
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req, err = http.NewRequest("GET", url, nil) |
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if err != nil { |
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return nil, err |
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} |
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req.Header.Set("Authorization", token) |
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client := new(http.Client) |
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var resp *http.Response |
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resp, err = client.Do(req) |
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if err != nil { |
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return nil, err |
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} |
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body, err = ioutil.ReadAll(resp.Body) |
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if err != nil { |
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return nil, err |
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} |
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defer resp.Body.Close() |
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if resp.StatusCode != 200 && resp.StatusCode != 404 { |
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return nil, fmt.Errorf("status: %s", resp.Status) |
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} else if resp.StatusCode == 404 { |
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var jsonError WpCveInfos |
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if err = json.Unmarshal(body, &jsonError); err != nil { |
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return nil, err |
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} |
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if jsonError.Error == "HTTP Token: Access denied.\n" { |
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return nil, fmt.Errorf("wordpress: HTTP Token: Access denied") |
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} else if jsonError.Error == "Not found" { |
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c.log.Infof("wordpress: %s not found", content.Name) |
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} else { |
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return nil, fmt.Errorf("status: %s", resp.Status) |
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} |
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} |
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return body, nil |
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} |
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func contentConvertVinfos(stdout string, content WpStatus) (vinfos []models.VulnInfo, err error) { |
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data := map[string]WpCveInfos{} |
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if err = json.Unmarshal([]byte(stdout), &data); err != nil { |
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var jsonError WpCveInfos |
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if err = json.Unmarshal([]byte(stdout), &jsonError); err != nil { |
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return nil, err |
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} |
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} |
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for _, e := range data { |
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if len(e.Vulnerabilities) == 0 { |
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continue |
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} |
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for _, vulnerability := range e.Vulnerabilities { |
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if len(vulnerability.References.Cve) == 0 { |
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continue |
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} |
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var cveIDs []string |
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for _, cveNumber := range vulnerability.References.Cve { |
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cveIDs = append(cveIDs, "CVE-"+cveNumber) |
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} |
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if len(vulnerability.FixedIn) == 0 { |
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for _, cveID := range cveIDs { |
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vinfos = append(vinfos, models.VulnInfo{ |
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CveID: cveID, |
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CveContents: models.NewCveContents( |
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models.CveContent{ |
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CveID: cveID, |
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Title: vulnerability.Title, |
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}, |
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), |
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AffectedPackages: models.PackageStatuses{ |
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{ |
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NotFixedYet: true, |
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}, |
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}, |
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}) |
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} |
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} |
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var v1 *version.Version |
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v1, err = version.NewVersion(content.Version) |
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if err != nil { |
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return nil, err |
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} |
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var v2 *version.Version |
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v2, err = version.NewVersion(vulnerability.FixedIn) |
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if err != nil { |
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return nil, err |
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} |
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if v1.LessThan(v2) { |
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for _, cveID := range cveIDs { |
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|
vinfos = append(vinfos, models.VulnInfo{ |
361
|
|
|
CveID: cveID, |
362
|
|
|
CveContents: models.NewCveContents( |
363
|
|
|
models.CveContent{ |
364
|
|
|
CveID: cveID, |
365
|
|
|
Title: vulnerability.Title, |
366
|
|
|
}, |
367
|
|
|
), |
368
|
|
|
AffectedPackages: models.PackageStatuses{ |
369
|
|
|
{ |
370
|
|
|
NotFixedYet: false, |
371
|
|
|
}, |
372
|
|
|
}, |
373
|
|
|
}) |
374
|
|
|
} |
375
|
|
|
} |
376
|
|
|
} |
377
|
|
|
} |
378
|
|
|
return vinfos, nil |
379
|
|
|
} |
380
|
|
|
|
381
|
|
|
func (l *base) wpConvertToModel() models.VulnInfos { |
382
|
|
|
return l.WpVulnInfos |
383
|
|
|
} |
384
|
|
|
|
385
|
|
|
func (l *base) exec(cmd string, sudo bool) execResult { |
386
|
|
|
return exec(l.ServerInfo, cmd, sudo, l.log) |
387
|
|
|
} |
388
|
|
|
|
389
|
|
|
func (l *base) setServerInfo(c config.ServerInfo) { |
390
|
|
|
l.ServerInfo = c |
391
|
|
|
} |
392
|
|
|
|
393
|
|
|
func (l *base) getServerInfo() config.ServerInfo { |
394
|
|
|
return l.ServerInfo |
395
|
|
|
} |
396
|
|
|
|
397
|
|
|
func (l *base) setDistro(fam, rel string) { |
398
|
|
|
d := config.Distro{ |
399
|
|
|
Family: fam, |
400
|
|
|
Release: rel, |
401
|
|
|
} |
402
|
|
|
l.Distro = d |
403
|
|
|
|
404
|
|
|
s := l.getServerInfo() |
405
|
|
|
s.Distro = d |
406
|
|
|
l.setServerInfo(s) |
407
|
|
|
} |
408
|
|
|
|
409
|
|
|
func (l *base) getDistro() config.Distro { |
410
|
|
|
return l.Distro |
411
|
|
|
} |
412
|
|
|
|
413
|
|
|
func (l *base) setPlatform(p models.Platform) { |
414
|
|
|
l.Platform = p |
415
|
|
|
} |
416
|
|
|
|
417
|
|
|
func (l *base) getPlatform() models.Platform { |
418
|
|
|
return l.Platform |
419
|
|
|
} |
420
|
|
|
|
421
|
|
|
func (l *base) runningKernel() (release, version string, err error) { |
422
|
|
|
r := l.exec("uname -r", noSudo) |
423
|
|
|
if !r.isSuccess() { |
424
|
|
|
return "", "", fmt.Errorf("Failed to SSH: %s", r) |
425
|
|
|
} |
426
|
|
|
release = strings.TrimSpace(r.Stdout) |
427
|
|
|
|
428
|
|
|
switch l.Distro.Family { |
429
|
|
|
case config.Debian: |
430
|
|
|
r := l.exec("uname -a", noSudo) |
431
|
|
|
if !r.isSuccess() { |
432
|
|
|
return "", "", fmt.Errorf("Failed to SSH: %s", r) |
433
|
|
|
} |
434
|
|
|
ss := strings.Fields(r.Stdout) |
435
|
|
|
if 6 < len(ss) { |
436
|
|
|
version = ss[6] |
437
|
|
|
} |
438
|
|
|
} |
439
|
|
|
return |
440
|
|
|
} |
441
|
|
|
|
442
|
|
|
func (l *base) allContainers() (containers []config.Container, err error) { |
443
|
|
|
switch l.ServerInfo.ContainerType { |
444
|
|
|
case "", "docker": |
445
|
|
|
stdout, err := l.dockerPs("-a --format '{{.ID}} {{.Names}} {{.Image}}'") |
446
|
|
|
if err != nil { |
447
|
|
|
return containers, err |
448
|
|
|
} |
449
|
|
|
return l.parseDockerPs(stdout) |
450
|
|
|
case "lxd": |
451
|
|
|
stdout, err := l.lxdPs("-c n") |
452
|
|
|
if err != nil { |
453
|
|
|
return containers, err |
454
|
|
|
} |
455
|
|
|
return l.parseLxdPs(stdout) |
456
|
|
|
case "lxc": |
457
|
|
|
stdout, err := l.lxcPs("-1") |
458
|
|
|
if err != nil { |
459
|
|
|
return containers, err |
460
|
|
|
} |
461
|
|
|
return l.parseLxcPs(stdout) |
462
|
|
|
default: |
463
|
|
|
return containers, fmt.Errorf( |
464
|
|
|
"Not supported yet: %s", l.ServerInfo.ContainerType) |
465
|
|
|
} |
466
|
|
|
} |
467
|
|
|
|
468
|
|
|
func (l *base) runningContainers() (containers []config.Container, err error) { |
469
|
|
|
switch l.ServerInfo.ContainerType { |
470
|
|
|
case "", "docker": |
471
|
|
|
stdout, err := l.dockerPs("--format '{{.ID}} {{.Names}} {{.Image}}'") |
472
|
|
|
if err != nil { |
473
|
|
|
return containers, err |
474
|
|
|
} |
475
|
|
|
return l.parseDockerPs(stdout) |
476
|
|
|
case "lxd": |
477
|
|
|
stdout, err := l.lxdPs("volatile.last_state.power=RUNNING -c n") |
478
|
|
|
if err != nil { |
479
|
|
|
return containers, err |
480
|
|
|
} |
481
|
|
|
return l.parseLxdPs(stdout) |
482
|
|
|
case "lxc": |
483
|
|
|
stdout, err := l.lxcPs("-1 --running") |
484
|
|
|
if err != nil { |
485
|
|
|
return containers, err |
486
|
|
|
} |
487
|
|
|
return l.parseLxcPs(stdout) |
488
|
|
|
default: |
489
|
|
|
return containers, fmt.Errorf( |
490
|
|
|
"Not supported yet: %s", l.ServerInfo.ContainerType) |
491
|
|
|
} |
492
|
|
|
} |
493
|
|
|
|
494
|
|
|
func (l *base) exitedContainers() (containers []config.Container, err error) { |
495
|
|
|
switch l.ServerInfo.ContainerType { |
496
|
|
|
case "", "docker": |
497
|
|
|
stdout, err := l.dockerPs("--filter 'status=exited' --format '{{.ID}} {{.Names}} {{.Image}}'") |
498
|
|
|
if err != nil { |
499
|
|
|
return containers, err |
500
|
|
|
} |
501
|
|
|
return l.parseDockerPs(stdout) |
502
|
|
|
case "lxd": |
503
|
|
|
stdout, err := l.lxdPs("volatile.last_state.power=STOPPED -c n") |
504
|
|
|
if err != nil { |
505
|
|
|
return containers, err |
506
|
|
|
} |
507
|
|
|
return l.parseLxdPs(stdout) |
508
|
|
|
case "lxc": |
509
|
|
|
stdout, err := l.lxcPs("-1 --stopped") |
510
|
|
|
if err != nil { |
511
|
|
|
return containers, err |
512
|
|
|
} |
513
|
|
|
return l.parseLxcPs(stdout) |
514
|
|
|
default: |
515
|
|
|
return containers, fmt.Errorf( |
516
|
|
|
"Not supported yet: %s", l.ServerInfo.ContainerType) |
517
|
|
|
} |
518
|
|
|
} |
519
|
|
|
|
520
|
|
|
func (l *base) dockerPs(option string) (string, error) { |
521
|
|
|
cmd := fmt.Sprintf("docker ps %s", option) |
522
|
|
|
r := l.exec(cmd, noSudo) |
523
|
|
|
if !r.isSuccess() { |
524
|
|
|
return "", fmt.Errorf("Failed to SSH: %s", r) |
525
|
|
|
} |
526
|
|
|
return r.Stdout, nil |
527
|
|
|
} |
528
|
|
|
|
529
|
|
|
func (l *base) lxdPs(option string) (string, error) { |
530
|
|
|
cmd := fmt.Sprintf("lxc list %s", option) |
531
|
|
|
r := l.exec(cmd, noSudo) |
532
|
|
|
if !r.isSuccess() { |
533
|
|
|
return "", fmt.Errorf("failed to SSH: %s", r) |
534
|
|
|
} |
535
|
|
|
return r.Stdout, nil |
536
|
|
|
} |
537
|
|
|
|
538
|
|
|
func (l *base) lxcPs(option string) (string, error) { |
539
|
|
|
cmd := fmt.Sprintf("lxc-ls %s 2>/dev/null", option) |
540
|
|
|
r := l.exec(cmd, sudo) |
541
|
|
|
if !r.isSuccess() { |
542
|
|
|
return "", fmt.Errorf("failed to SSH: %s", r) |
543
|
|
|
} |
544
|
|
|
return r.Stdout, nil |
545
|
|
|
} |
546
|
|
|
|
547
|
|
|
func (l *base) parseDockerPs(stdout string) (containers []config.Container, err error) { |
548
|
|
|
lines := strings.Split(stdout, "\n") |
549
|
|
|
for _, line := range lines { |
550
|
|
|
fields := strings.Fields(line) |
551
|
|
|
if len(fields) == 0 { |
552
|
|
|
break |
553
|
|
|
} |
554
|
|
|
if len(fields) != 3 { |
555
|
|
|
return containers, fmt.Errorf("Unknown format: %s", line) |
556
|
|
|
} |
557
|
|
|
containers = append(containers, config.Container{ |
558
|
|
|
ContainerID: fields[0], |
559
|
|
|
Name: fields[1], |
560
|
|
|
Image: fields[2], |
561
|
|
|
}) |
562
|
|
|
} |
563
|
|
|
return |
564
|
|
|
} |
565
|
|
|
|
566
|
|
|
func (l *base) parseLxdPs(stdout string) (containers []config.Container, err error) { |
567
|
|
|
lines := strings.Split(stdout, "\n") |
568
|
|
|
for i, line := range lines[3:] { |
569
|
|
|
if i%2 == 1 { |
570
|
|
|
continue |
571
|
|
|
} |
572
|
|
|
fields := strings.Fields(strings.Replace(line, "|", " ", -1)) |
573
|
|
|
if len(fields) == 0 { |
574
|
|
|
break |
575
|
|
|
} |
576
|
|
|
if len(fields) != 1 { |
577
|
|
|
return containers, fmt.Errorf("Unknown format: %s", line) |
578
|
|
|
} |
579
|
|
|
containers = append(containers, config.Container{ |
580
|
|
|
ContainerID: fields[0], |
581
|
|
|
Name: fields[0], |
582
|
|
|
}) |
583
|
|
|
} |
584
|
|
|
return |
585
|
|
|
} |
586
|
|
|
|
587
|
|
|
func (l *base) parseLxcPs(stdout string) (containers []config.Container, err error) { |
588
|
|
|
lines := strings.Split(stdout, "\n") |
589
|
|
|
for _, line := range lines { |
590
|
|
|
fields := strings.Fields(line) |
591
|
|
|
if len(fields) == 0 { |
592
|
|
|
break |
593
|
|
|
} |
594
|
|
|
containers = append(containers, config.Container{ |
595
|
|
|
ContainerID: fields[0], |
596
|
|
|
Name: fields[0], |
597
|
|
|
}) |
598
|
|
|
} |
599
|
|
|
return |
600
|
|
|
} |
601
|
|
|
|
602
|
|
|
// ip executes ip command and returns IP addresses |
603
|
|
|
func (l *base) ip() ([]string, []string, error) { |
604
|
|
|
// e.g. |
605
|
|
|
// 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000\ link/ether 52:54:00:2a:86:4c brd ff:ff:ff:ff:ff:ff |
606
|
|
|
// 2: eth0 inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0 |
607
|
|
|
// 2: eth0 inet6 fe80::5054:ff:fe2a:864c/64 scope link \ valid_lft forever preferred_lft forever |
608
|
|
|
r := l.exec("/sbin/ip -o addr", noSudo) |
609
|
|
|
if !r.isSuccess() { |
610
|
|
|
return nil, nil, fmt.Errorf("Failed to detect IP address: %v", r) |
611
|
|
|
} |
612
|
|
|
ipv4Addrs, ipv6Addrs := l.parseIP(r.Stdout) |
613
|
|
|
return ipv4Addrs, ipv6Addrs, nil |
614
|
|
|
} |
615
|
|
|
|
616
|
|
|
// parseIP parses the results of ip command |
617
|
|
|
func (l *base) parseIP(stdout string) (ipv4Addrs []string, ipv6Addrs []string) { |
618
|
|
|
lines := strings.Split(stdout, "\n") |
619
|
|
|
for _, line := range lines { |
620
|
|
|
fields := strings.Fields(line) |
621
|
|
|
if len(fields) < 4 { |
622
|
|
|
continue |
623
|
|
|
} |
624
|
|
|
ip, _, err := net.ParseCIDR(fields[3]) |
625
|
|
|
if err != nil { |
626
|
|
|
continue |
627
|
|
|
} |
628
|
|
|
if !ip.IsGlobalUnicast() { |
629
|
|
|
continue |
630
|
|
|
} |
631
|
|
|
if ipv4 := ip.To4(); ipv4 != nil { |
632
|
|
|
ipv4Addrs = append(ipv4Addrs, ipv4.String()) |
633
|
|
|
} else { |
634
|
|
|
ipv6Addrs = append(ipv6Addrs, ip.String()) |
635
|
|
|
} |
636
|
|
|
} |
637
|
|
|
return |
638
|
|
|
} |
639
|
|
|
|
640
|
|
|
func (l *base) detectPlatform() { |
641
|
|
|
if l.getServerInfo().Mode.IsOffline() { |
642
|
|
|
l.setPlatform(models.Platform{Name: "unknown"}) |
643
|
|
|
return |
644
|
|
|
} |
645
|
|
|
ok, instanceID, err := l.detectRunningOnAws() |
646
|
|
|
if err != nil { |
647
|
|
|
l.setPlatform(models.Platform{Name: "other"}) |
648
|
|
|
return |
649
|
|
|
} |
650
|
|
|
if ok { |
651
|
|
|
l.setPlatform(models.Platform{ |
652
|
|
|
Name: "aws", |
653
|
|
|
InstanceID: instanceID, |
654
|
|
|
}) |
655
|
|
|
return |
656
|
|
|
} |
657
|
|
|
|
658
|
|
|
//TODO Azure, GCP... |
659
|
|
|
l.setPlatform(models.Platform{Name: "other"}) |
660
|
|
|
return |
661
|
|
|
} |
662
|
|
|
|
663
|
|
|
func (l *base) detectRunningOnAws() (ok bool, instanceID string, err error) { |
664
|
|
|
if r := l.exec("type curl", noSudo); r.isSuccess() { |
665
|
|
|
cmd := "curl --max-time 1 --noproxy 169.254.169.254 http://169.254.169.254/latest/meta-data/instance-id" |
666
|
|
|
r := l.exec(cmd, noSudo) |
667
|
|
|
if r.isSuccess() { |
668
|
|
|
id := strings.TrimSpace(r.Stdout) |
669
|
|
|
if !l.isAwsInstanceID(id) { |
670
|
|
|
return false, "", nil |
671
|
|
|
} |
672
|
|
|
return true, id, nil |
673
|
|
|
} |
674
|
|
|
|
675
|
|
|
switch r.ExitStatus { |
676
|
|
|
case 28, 7: |
677
|
|
|
// Not running on AWS |
678
|
|
|
// 7 Failed to connect to host. |
679
|
|
|
// 28 operation timeout. |
680
|
|
|
return false, "", nil |
681
|
|
|
} |
682
|
|
|
} |
683
|
|
|
|
684
|
|
|
if r := l.exec("type wget", noSudo); r.isSuccess() { |
685
|
|
|
cmd := "wget --tries=3 --timeout=1 --no-proxy -q -O - http://169.254.169.254/latest/meta-data/instance-id" |
686
|
|
|
r := l.exec(cmd, noSudo) |
687
|
|
|
if r.isSuccess() { |
688
|
|
|
id := strings.TrimSpace(r.Stdout) |
689
|
|
|
if !l.isAwsInstanceID(id) { |
690
|
|
|
return false, "", nil |
691
|
|
|
} |
692
|
|
|
return true, id, nil |
693
|
|
|
} |
694
|
|
|
|
695
|
|
|
switch r.ExitStatus { |
696
|
|
|
case 4, 8: |
697
|
|
|
// Not running on AWS |
698
|
|
|
// 4 Network failure |
699
|
|
|
// 8 Server issued an error response. |
700
|
|
|
return false, "", nil |
701
|
|
|
} |
702
|
|
|
} |
703
|
|
|
return false, "", fmt.Errorf( |
704
|
|
|
"Failed to curl or wget to AWS instance metadata on %s. container: %s", |
705
|
|
|
l.ServerInfo.ServerName, l.ServerInfo.Container.Name) |
706
|
|
|
} |
707
|
|
|
|
708
|
|
|
// http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/resource-ids.html |
709
|
|
|
var awsInstanceIDPattern = regexp.MustCompile(`^i-[0-9a-f]+$`) |
710
|
|
|
|
711
|
|
|
func (l *base) isAwsInstanceID(str string) bool { |
712
|
|
|
return awsInstanceIDPattern.MatchString(str) |
713
|
|
|
} |
714
|
|
|
|
715
|
|
|
func (l *base) convertToModel() models.ScanResult { |
716
|
|
|
ctype := l.ServerInfo.ContainerType |
717
|
|
|
if l.ServerInfo.Container.ContainerID != "" && ctype == "" { |
718
|
|
|
ctype = "docker" |
719
|
|
|
} |
720
|
|
|
container := models.Container{ |
721
|
|
|
ContainerID: l.ServerInfo.Container.ContainerID, |
722
|
|
|
Name: l.ServerInfo.Container.Name, |
723
|
|
|
Image: l.ServerInfo.Container.Image, |
724
|
|
|
Type: ctype, |
725
|
|
|
} |
726
|
|
|
|
727
|
|
|
errs := []string{} |
728
|
|
|
for _, e := range l.errs { |
729
|
|
|
errs = append(errs, fmt.Sprintf("%s", e)) |
730
|
|
|
} |
731
|
|
|
|
732
|
|
|
return models.ScanResult{ |
733
|
|
|
JSONVersion: models.JSONVersion, |
734
|
|
|
ServerName: l.ServerInfo.ServerName, |
735
|
|
|
ScannedAt: time.Now(), |
736
|
|
|
ScanMode: l.ServerInfo.Mode.String(), |
737
|
|
|
Family: l.Distro.Family, |
738
|
|
|
Release: l.Distro.Release, |
739
|
|
|
Container: container, |
740
|
|
|
Platform: l.Platform, |
741
|
|
|
IPv4Addrs: l.ServerInfo.IPv4Addrs, |
742
|
|
|
IPv6Addrs: l.ServerInfo.IPv6Addrs, |
743
|
|
|
ScannedCves: l.VulnInfos, |
744
|
|
|
RunningKernel: l.Kernel, |
745
|
|
|
Packages: l.Packages, |
746
|
|
|
SrcPackages: l.SrcPackages, |
747
|
|
|
Optional: l.ServerInfo.Optional, |
748
|
|
|
Errors: errs, |
749
|
|
|
} |
750
|
|
|
} |
751
|
|
|
|
752
|
|
|
func (l *base) setErrs(errs []error) { |
753
|
|
|
l.errs = errs |
754
|
|
|
} |
755
|
|
|
|
756
|
|
|
func (l *base) getErrs() []error { |
757
|
|
|
return l.errs |
758
|
|
|
} |
759
|
|
|
|
760
|
|
|
const ( |
761
|
|
|
systemd = "systemd" |
762
|
|
|
upstart = "upstart" |
763
|
|
|
sysVinit = "init" |
764
|
|
|
) |
765
|
|
|
|
766
|
|
|
// https://unix.stackexchange.com/questions/196166/how-to-find-out-if-a-system-uses-sysv-upstart-or-systemd-initsystem |
767
|
|
|
func (l *base) detectInitSystem() (string, error) { |
768
|
|
|
var f func(string) (string, error) |
769
|
|
|
f = func(cmd string) (string, error) { |
770
|
|
|
r := l.exec(cmd, sudo) |
771
|
|
|
if !r.isSuccess() { |
772
|
|
|
return "", fmt.Errorf("Failed to stat %s: %s", cmd, r) |
773
|
|
|
} |
774
|
|
|
scanner := bufio.NewScanner(strings.NewReader(r.Stdout)) |
775
|
|
|
scanner.Scan() |
776
|
|
|
line := strings.TrimSpace(scanner.Text()) |
777
|
|
|
if strings.Contains(line, "systemd") { |
778
|
|
|
return systemd, nil |
779
|
|
|
} else if strings.Contains(line, "upstart") { |
780
|
|
|
return upstart, nil |
781
|
|
|
} else if strings.Contains(line, "File: ‘/proc/1/exe’ -> ‘/sbin/init’") || |
782
|
|
|
strings.Contains(line, "File: `/proc/1/exe' -> `/sbin/init'") { |
783
|
|
|
return f("stat /sbin/init") |
784
|
|
|
} else if line == "File: ‘/sbin/init’" || |
785
|
|
|
line == "File: `/sbin/init'" { |
786
|
|
|
r := l.exec("/sbin/init --version", noSudo) |
787
|
|
|
if r.isSuccess() { |
788
|
|
|
if strings.Contains(r.Stdout, "upstart") { |
789
|
|
|
return upstart, nil |
790
|
|
|
} |
791
|
|
|
} |
792
|
|
|
return sysVinit, nil |
793
|
|
|
} |
794
|
|
|
return "", fmt.Errorf("Failed to detect a init system: %s", line) |
795
|
|
|
} |
796
|
|
|
return f("stat /proc/1/exe") |
797
|
|
|
} |
798
|
|
|
|
799
|
|
|
func (l *base) detectServiceName(pid string) (string, error) { |
800
|
|
|
cmd := fmt.Sprintf("systemctl status --quiet --no-pager %s", pid) |
801
|
|
|
r := l.exec(cmd, noSudo) |
802
|
|
|
if !r.isSuccess() { |
803
|
|
|
return "", fmt.Errorf("Failed to stat %s: %s", cmd, r) |
804
|
|
|
} |
805
|
|
|
return l.parseSystemctlStatus(r.Stdout), nil |
806
|
|
|
} |
807
|
|
|
|
808
|
|
|
func (l *base) parseSystemctlStatus(stdout string) string { |
809
|
|
|
scanner := bufio.NewScanner(strings.NewReader(stdout)) |
810
|
|
|
scanner.Scan() |
811
|
|
|
line := scanner.Text() |
812
|
|
|
ss := strings.Fields(line) |
813
|
|
|
if len(ss) < 2 || strings.HasPrefix(line, "Failed to get unit for PID") { |
814
|
|
|
return "" |
815
|
|
|
} |
816
|
|
|
return ss[1] |
817
|
|
|
} |
818
|
|
|
|