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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{Name: "core"}, 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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if content.Name == "core" { |
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return nil, fmt.Errorf("wordpress: core version not found") |
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} |
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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 |
|
316
|
|
|
} |
|
317
|
|
|
} |
|
318
|
|
|
|
|
319
|
|
|
for _, e := range data { |
|
320
|
|
|
if len(e.Vulnerabilities) == 0 { |
|
321
|
|
|
continue |
|
322
|
|
|
} |
|
323
|
|
|
for _, vulnerability := range e.Vulnerabilities { |
|
324
|
|
|
if len(vulnerability.References.Cve) == 0 { |
|
325
|
|
|
continue |
|
326
|
|
|
} |
|
327
|
|
|
|
|
328
|
|
|
var cveIDs []string |
|
329
|
|
|
for _, cveNumber := range vulnerability.References.Cve { |
|
330
|
|
|
cveIDs = append(cveIDs, "CVE-"+cveNumber) |
|
331
|
|
|
} |
|
332
|
|
|
|
|
333
|
|
|
if len(vulnerability.FixedIn) == 0 { |
|
334
|
|
|
for _, cveID := range cveIDs { |
|
335
|
|
|
vinfos = append(vinfos, models.VulnInfo{ |
|
336
|
|
|
CveID: cveID, |
|
337
|
|
|
CveContents: models.NewCveContents( |
|
338
|
|
|
models.CveContent{ |
|
339
|
|
|
CveID: cveID, |
|
340
|
|
|
Title: vulnerability.Title, |
|
341
|
|
|
}, |
|
342
|
|
|
), |
|
343
|
|
|
AffectedPackages: models.PackageStatuses{ |
|
344
|
|
|
{ |
|
345
|
|
|
NotFixedYet: true, |
|
346
|
|
|
}, |
|
347
|
|
|
}, |
|
348
|
|
|
}) |
|
349
|
|
|
} |
|
350
|
|
|
continue |
|
351
|
|
|
} |
|
352
|
|
|
var v1 *version.Version |
|
353
|
|
|
v1, err = version.NewVersion(content.Version) |
|
354
|
|
|
if err != nil { |
|
355
|
|
|
return nil, err |
|
356
|
|
|
} |
|
357
|
|
|
var v2 *version.Version |
|
358
|
|
|
v2, err = version.NewVersion(vulnerability.FixedIn) |
|
359
|
|
|
if err != nil { |
|
360
|
|
|
return nil, err |
|
361
|
|
|
} |
|
362
|
|
|
if v1.LessThan(v2) { |
|
363
|
|
|
for _, cveID := range cveIDs { |
|
364
|
|
|
vinfos = append(vinfos, models.VulnInfo{ |
|
365
|
|
|
CveID: cveID, |
|
366
|
|
|
CveContents: models.NewCveContents( |
|
367
|
|
|
models.CveContent{ |
|
368
|
|
|
CveID: cveID, |
|
369
|
|
|
Title: vulnerability.Title, |
|
370
|
|
|
}, |
|
371
|
|
|
), |
|
372
|
|
|
AffectedPackages: models.PackageStatuses{ |
|
373
|
|
|
{ |
|
374
|
|
|
NotFixedYet: false, |
|
375
|
|
|
}, |
|
376
|
|
|
}, |
|
377
|
|
|
}) |
|
378
|
|
|
} |
|
379
|
|
|
} |
|
380
|
|
|
} |
|
381
|
|
|
} |
|
382
|
|
|
return vinfos, nil |
|
383
|
|
|
} |
|
384
|
|
|
|
|
385
|
|
|
func (l *base) wpConvertToModel() models.VulnInfos { |
|
386
|
|
|
return l.WpVulnInfos |
|
387
|
|
|
} |
|
388
|
|
|
|
|
389
|
|
|
func (l *base) exec(cmd string, sudo bool) execResult { |
|
390
|
|
|
return exec(l.ServerInfo, cmd, sudo, l.log) |
|
391
|
|
|
} |
|
392
|
|
|
|
|
393
|
|
|
func (l *base) setServerInfo(c config.ServerInfo) { |
|
394
|
|
|
l.ServerInfo = c |
|
395
|
|
|
} |
|
396
|
|
|
|
|
397
|
|
|
func (l *base) getServerInfo() config.ServerInfo { |
|
398
|
|
|
return l.ServerInfo |
|
399
|
|
|
} |
|
400
|
|
|
|
|
401
|
|
|
func (l *base) setDistro(fam, rel string) { |
|
402
|
|
|
d := config.Distro{ |
|
403
|
|
|
Family: fam, |
|
404
|
|
|
Release: rel, |
|
405
|
|
|
} |
|
406
|
|
|
l.Distro = d |
|
407
|
|
|
|
|
408
|
|
|
s := l.getServerInfo() |
|
409
|
|
|
s.Distro = d |
|
410
|
|
|
l.setServerInfo(s) |
|
411
|
|
|
} |
|
412
|
|
|
|
|
413
|
|
|
func (l *base) getDistro() config.Distro { |
|
414
|
|
|
return l.Distro |
|
415
|
|
|
} |
|
416
|
|
|
|
|
417
|
|
|
func (l *base) setPlatform(p models.Platform) { |
|
418
|
|
|
l.Platform = p |
|
419
|
|
|
} |
|
420
|
|
|
|
|
421
|
|
|
func (l *base) getPlatform() models.Platform { |
|
422
|
|
|
return l.Platform |
|
423
|
|
|
} |
|
424
|
|
|
|
|
425
|
|
|
func (l *base) runningKernel() (release, version string, err error) { |
|
426
|
|
|
r := l.exec("uname -r", noSudo) |
|
427
|
|
|
if !r.isSuccess() { |
|
428
|
|
|
return "", "", fmt.Errorf("Failed to SSH: %s", r) |
|
429
|
|
|
} |
|
430
|
|
|
release = strings.TrimSpace(r.Stdout) |
|
431
|
|
|
|
|
432
|
|
|
switch l.Distro.Family { |
|
433
|
|
|
case config.Debian: |
|
434
|
|
|
r := l.exec("uname -a", noSudo) |
|
435
|
|
|
if !r.isSuccess() { |
|
436
|
|
|
return "", "", fmt.Errorf("Failed to SSH: %s", r) |
|
437
|
|
|
} |
|
438
|
|
|
ss := strings.Fields(r.Stdout) |
|
439
|
|
|
if 6 < len(ss) { |
|
440
|
|
|
version = ss[6] |
|
441
|
|
|
} |
|
442
|
|
|
} |
|
443
|
|
|
return |
|
444
|
|
|
} |
|
445
|
|
|
|
|
446
|
|
|
func (l *base) allContainers() (containers []config.Container, err error) { |
|
447
|
|
|
switch l.ServerInfo.ContainerType { |
|
448
|
|
|
case "", "docker": |
|
449
|
|
|
stdout, err := l.dockerPs("-a --format '{{.ID}} {{.Names}} {{.Image}}'") |
|
450
|
|
|
if err != nil { |
|
451
|
|
|
return containers, err |
|
452
|
|
|
} |
|
453
|
|
|
return l.parseDockerPs(stdout) |
|
454
|
|
|
case "lxd": |
|
455
|
|
|
stdout, err := l.lxdPs("-c n") |
|
456
|
|
|
if err != nil { |
|
457
|
|
|
return containers, err |
|
458
|
|
|
} |
|
459
|
|
|
return l.parseLxdPs(stdout) |
|
460
|
|
|
case "lxc": |
|
461
|
|
|
stdout, err := l.lxcPs("-1") |
|
462
|
|
|
if err != nil { |
|
463
|
|
|
return containers, err |
|
464
|
|
|
} |
|
465
|
|
|
return l.parseLxcPs(stdout) |
|
466
|
|
|
default: |
|
467
|
|
|
return containers, fmt.Errorf( |
|
468
|
|
|
"Not supported yet: %s", l.ServerInfo.ContainerType) |
|
469
|
|
|
} |
|
470
|
|
|
} |
|
471
|
|
|
|
|
472
|
|
|
func (l *base) runningContainers() (containers []config.Container, err error) { |
|
473
|
|
|
switch l.ServerInfo.ContainerType { |
|
474
|
|
|
case "", "docker": |
|
475
|
|
|
stdout, err := l.dockerPs("--format '{{.ID}} {{.Names}} {{.Image}}'") |
|
476
|
|
|
if err != nil { |
|
477
|
|
|
return containers, err |
|
478
|
|
|
} |
|
479
|
|
|
return l.parseDockerPs(stdout) |
|
480
|
|
|
case "lxd": |
|
481
|
|
|
stdout, err := l.lxdPs("volatile.last_state.power=RUNNING -c n") |
|
482
|
|
|
if err != nil { |
|
483
|
|
|
return containers, err |
|
484
|
|
|
} |
|
485
|
|
|
return l.parseLxdPs(stdout) |
|
486
|
|
|
case "lxc": |
|
487
|
|
|
stdout, err := l.lxcPs("-1 --running") |
|
488
|
|
|
if err != nil { |
|
489
|
|
|
return containers, err |
|
490
|
|
|
} |
|
491
|
|
|
return l.parseLxcPs(stdout) |
|
492
|
|
|
default: |
|
493
|
|
|
return containers, fmt.Errorf( |
|
494
|
|
|
"Not supported yet: %s", l.ServerInfo.ContainerType) |
|
495
|
|
|
} |
|
496
|
|
|
} |
|
497
|
|
|
|
|
498
|
|
|
func (l *base) exitedContainers() (containers []config.Container, err error) { |
|
499
|
|
|
switch l.ServerInfo.ContainerType { |
|
500
|
|
|
case "", "docker": |
|
501
|
|
|
stdout, err := l.dockerPs("--filter 'status=exited' --format '{{.ID}} {{.Names}} {{.Image}}'") |
|
502
|
|
|
if err != nil { |
|
503
|
|
|
return containers, err |
|
504
|
|
|
} |
|
505
|
|
|
return l.parseDockerPs(stdout) |
|
506
|
|
|
case "lxd": |
|
507
|
|
|
stdout, err := l.lxdPs("volatile.last_state.power=STOPPED -c n") |
|
508
|
|
|
if err != nil { |
|
509
|
|
|
return containers, err |
|
510
|
|
|
} |
|
511
|
|
|
return l.parseLxdPs(stdout) |
|
512
|
|
|
case "lxc": |
|
513
|
|
|
stdout, err := l.lxcPs("-1 --stopped") |
|
514
|
|
|
if err != nil { |
|
515
|
|
|
return containers, err |
|
516
|
|
|
} |
|
517
|
|
|
return l.parseLxcPs(stdout) |
|
518
|
|
|
default: |
|
519
|
|
|
return containers, fmt.Errorf( |
|
520
|
|
|
"Not supported yet: %s", l.ServerInfo.ContainerType) |
|
521
|
|
|
} |
|
522
|
|
|
} |
|
523
|
|
|
|
|
524
|
|
|
func (l *base) dockerPs(option string) (string, error) { |
|
525
|
|
|
cmd := fmt.Sprintf("docker ps %s", option) |
|
526
|
|
|
r := l.exec(cmd, noSudo) |
|
527
|
|
|
if !r.isSuccess() { |
|
528
|
|
|
return "", fmt.Errorf("Failed to SSH: %s", r) |
|
529
|
|
|
} |
|
530
|
|
|
return r.Stdout, nil |
|
531
|
|
|
} |
|
532
|
|
|
|
|
533
|
|
|
func (l *base) lxdPs(option string) (string, error) { |
|
534
|
|
|
cmd := fmt.Sprintf("lxc list %s", option) |
|
535
|
|
|
r := l.exec(cmd, noSudo) |
|
536
|
|
|
if !r.isSuccess() { |
|
537
|
|
|
return "", fmt.Errorf("failed to SSH: %s", r) |
|
538
|
|
|
} |
|
539
|
|
|
return r.Stdout, nil |
|
540
|
|
|
} |
|
541
|
|
|
|
|
542
|
|
|
func (l *base) lxcPs(option string) (string, error) { |
|
543
|
|
|
cmd := fmt.Sprintf("lxc-ls %s 2>/dev/null", option) |
|
544
|
|
|
r := l.exec(cmd, sudo) |
|
545
|
|
|
if !r.isSuccess() { |
|
546
|
|
|
return "", fmt.Errorf("failed to SSH: %s", r) |
|
547
|
|
|
} |
|
548
|
|
|
return r.Stdout, nil |
|
549
|
|
|
} |
|
550
|
|
|
|
|
551
|
|
|
func (l *base) parseDockerPs(stdout string) (containers []config.Container, err error) { |
|
552
|
|
|
lines := strings.Split(stdout, "\n") |
|
553
|
|
|
for _, line := range lines { |
|
554
|
|
|
fields := strings.Fields(line) |
|
555
|
|
|
if len(fields) == 0 { |
|
556
|
|
|
break |
|
557
|
|
|
} |
|
558
|
|
|
if len(fields) != 3 { |
|
559
|
|
|
return containers, fmt.Errorf("Unknown format: %s", line) |
|
560
|
|
|
} |
|
561
|
|
|
containers = append(containers, config.Container{ |
|
562
|
|
|
ContainerID: fields[0], |
|
563
|
|
|
Name: fields[1], |
|
564
|
|
|
Image: fields[2], |
|
565
|
|
|
}) |
|
566
|
|
|
} |
|
567
|
|
|
return |
|
568
|
|
|
} |
|
569
|
|
|
|
|
570
|
|
|
func (l *base) parseLxdPs(stdout string) (containers []config.Container, err error) { |
|
571
|
|
|
lines := strings.Split(stdout, "\n") |
|
572
|
|
|
for i, line := range lines[3:] { |
|
573
|
|
|
if i%2 == 1 { |
|
574
|
|
|
continue |
|
575
|
|
|
} |
|
576
|
|
|
fields := strings.Fields(strings.Replace(line, "|", " ", -1)) |
|
577
|
|
|
if len(fields) == 0 { |
|
578
|
|
|
break |
|
579
|
|
|
} |
|
580
|
|
|
if len(fields) != 1 { |
|
581
|
|
|
return containers, fmt.Errorf("Unknown format: %s", line) |
|
582
|
|
|
} |
|
583
|
|
|
containers = append(containers, config.Container{ |
|
584
|
|
|
ContainerID: fields[0], |
|
585
|
|
|
Name: fields[0], |
|
586
|
|
|
}) |
|
587
|
|
|
} |
|
588
|
|
|
return |
|
589
|
|
|
} |
|
590
|
|
|
|
|
591
|
|
|
func (l *base) parseLxcPs(stdout string) (containers []config.Container, err error) { |
|
592
|
|
|
lines := strings.Split(stdout, "\n") |
|
593
|
|
|
for _, line := range lines { |
|
594
|
|
|
fields := strings.Fields(line) |
|
595
|
|
|
if len(fields) == 0 { |
|
596
|
|
|
break |
|
597
|
|
|
} |
|
598
|
|
|
containers = append(containers, config.Container{ |
|
599
|
|
|
ContainerID: fields[0], |
|
600
|
|
|
Name: fields[0], |
|
601
|
|
|
}) |
|
602
|
|
|
} |
|
603
|
|
|
return |
|
604
|
|
|
} |
|
605
|
|
|
|
|
606
|
|
|
// ip executes ip command and returns IP addresses |
|
607
|
|
|
func (l *base) ip() ([]string, []string, error) { |
|
608
|
|
|
// e.g. |
|
609
|
|
|
// 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 |
|
610
|
|
|
// 2: eth0 inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0 |
|
611
|
|
|
// 2: eth0 inet6 fe80::5054:ff:fe2a:864c/64 scope link \ valid_lft forever preferred_lft forever |
|
612
|
|
|
r := l.exec("/sbin/ip -o addr", noSudo) |
|
613
|
|
|
if !r.isSuccess() { |
|
614
|
|
|
return nil, nil, fmt.Errorf("Failed to detect IP address: %v", r) |
|
615
|
|
|
} |
|
616
|
|
|
ipv4Addrs, ipv6Addrs := l.parseIP(r.Stdout) |
|
617
|
|
|
return ipv4Addrs, ipv6Addrs, nil |
|
618
|
|
|
} |
|
619
|
|
|
|
|
620
|
|
|
// parseIP parses the results of ip command |
|
621
|
|
|
func (l *base) parseIP(stdout string) (ipv4Addrs []string, ipv6Addrs []string) { |
|
622
|
|
|
lines := strings.Split(stdout, "\n") |
|
623
|
|
|
for _, line := range lines { |
|
624
|
|
|
fields := strings.Fields(line) |
|
625
|
|
|
if len(fields) < 4 { |
|
626
|
|
|
continue |
|
627
|
|
|
} |
|
628
|
|
|
ip, _, err := net.ParseCIDR(fields[3]) |
|
629
|
|
|
if err != nil { |
|
630
|
|
|
continue |
|
631
|
|
|
} |
|
632
|
|
|
if !ip.IsGlobalUnicast() { |
|
633
|
|
|
continue |
|
634
|
|
|
} |
|
635
|
|
|
if ipv4 := ip.To4(); ipv4 != nil { |
|
636
|
|
|
ipv4Addrs = append(ipv4Addrs, ipv4.String()) |
|
637
|
|
|
} else { |
|
638
|
|
|
ipv6Addrs = append(ipv6Addrs, ip.String()) |
|
639
|
|
|
} |
|
640
|
|
|
} |
|
641
|
|
|
return |
|
642
|
|
|
} |
|
643
|
|
|
|
|
644
|
|
|
func (l *base) detectPlatform() { |
|
645
|
|
|
if l.getServerInfo().Mode.IsOffline() { |
|
646
|
|
|
l.setPlatform(models.Platform{Name: "unknown"}) |
|
647
|
|
|
return |
|
648
|
|
|
} |
|
649
|
|
|
ok, instanceID, err := l.detectRunningOnAws() |
|
650
|
|
|
if err != nil { |
|
651
|
|
|
l.setPlatform(models.Platform{Name: "other"}) |
|
652
|
|
|
return |
|
653
|
|
|
} |
|
654
|
|
|
if ok { |
|
655
|
|
|
l.setPlatform(models.Platform{ |
|
656
|
|
|
Name: "aws", |
|
657
|
|
|
InstanceID: instanceID, |
|
658
|
|
|
}) |
|
659
|
|
|
return |
|
660
|
|
|
} |
|
661
|
|
|
|
|
662
|
|
|
//TODO Azure, GCP... |
|
663
|
|
|
l.setPlatform(models.Platform{Name: "other"}) |
|
664
|
|
|
return |
|
665
|
|
|
} |
|
666
|
|
|
|
|
667
|
|
|
func (l *base) detectRunningOnAws() (ok bool, instanceID string, err error) { |
|
668
|
|
|
if r := l.exec("type curl", noSudo); r.isSuccess() { |
|
669
|
|
|
cmd := "curl --max-time 1 --noproxy 169.254.169.254 http://169.254.169.254/latest/meta-data/instance-id" |
|
670
|
|
|
r := l.exec(cmd, noSudo) |
|
671
|
|
|
if r.isSuccess() { |
|
672
|
|
|
id := strings.TrimSpace(r.Stdout) |
|
673
|
|
|
if !l.isAwsInstanceID(id) { |
|
674
|
|
|
return false, "", nil |
|
675
|
|
|
} |
|
676
|
|
|
return true, id, nil |
|
677
|
|
|
} |
|
678
|
|
|
|
|
679
|
|
|
switch r.ExitStatus { |
|
680
|
|
|
case 28, 7: |
|
681
|
|
|
// Not running on AWS |
|
682
|
|
|
// 7 Failed to connect to host. |
|
683
|
|
|
// 28 operation timeout. |
|
684
|
|
|
return false, "", nil |
|
685
|
|
|
} |
|
686
|
|
|
} |
|
687
|
|
|
|
|
688
|
|
|
if r := l.exec("type wget", noSudo); r.isSuccess() { |
|
689
|
|
|
cmd := "wget --tries=3 --timeout=1 --no-proxy -q -O - http://169.254.169.254/latest/meta-data/instance-id" |
|
690
|
|
|
r := l.exec(cmd, noSudo) |
|
691
|
|
|
if r.isSuccess() { |
|
692
|
|
|
id := strings.TrimSpace(r.Stdout) |
|
693
|
|
|
if !l.isAwsInstanceID(id) { |
|
694
|
|
|
return false, "", nil |
|
695
|
|
|
} |
|
696
|
|
|
return true, id, nil |
|
697
|
|
|
} |
|
698
|
|
|
|
|
699
|
|
|
switch r.ExitStatus { |
|
700
|
|
|
case 4, 8: |
|
701
|
|
|
// Not running on AWS |
|
702
|
|
|
// 4 Network failure |
|
703
|
|
|
// 8 Server issued an error response. |
|
704
|
|
|
return false, "", nil |
|
705
|
|
|
} |
|
706
|
|
|
} |
|
707
|
|
|
return false, "", fmt.Errorf( |
|
708
|
|
|
"Failed to curl or wget to AWS instance metadata on %s. container: %s", |
|
709
|
|
|
l.ServerInfo.ServerName, l.ServerInfo.Container.Name) |
|
710
|
|
|
} |
|
711
|
|
|
|
|
712
|
|
|
// http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/resource-ids.html |
|
713
|
|
|
var awsInstanceIDPattern = regexp.MustCompile(`^i-[0-9a-f]+$`) |
|
714
|
|
|
|
|
715
|
|
|
func (l *base) isAwsInstanceID(str string) bool { |
|
716
|
|
|
return awsInstanceIDPattern.MatchString(str) |
|
717
|
|
|
} |
|
718
|
|
|
|
|
719
|
|
|
func (l *base) convertToModel() models.ScanResult { |
|
720
|
|
|
ctype := l.ServerInfo.ContainerType |
|
721
|
|
|
if l.ServerInfo.Container.ContainerID != "" && ctype == "" { |
|
722
|
|
|
ctype = "docker" |
|
723
|
|
|
} |
|
724
|
|
|
container := models.Container{ |
|
725
|
|
|
ContainerID: l.ServerInfo.Container.ContainerID, |
|
726
|
|
|
Name: l.ServerInfo.Container.Name, |
|
727
|
|
|
Image: l.ServerInfo.Container.Image, |
|
728
|
|
|
Type: ctype, |
|
729
|
|
|
} |
|
730
|
|
|
|
|
731
|
|
|
errs := []string{} |
|
732
|
|
|
for _, e := range l.errs { |
|
733
|
|
|
errs = append(errs, fmt.Sprintf("%s", e)) |
|
734
|
|
|
} |
|
735
|
|
|
|
|
736
|
|
|
return models.ScanResult{ |
|
737
|
|
|
JSONVersion: models.JSONVersion, |
|
738
|
|
|
ServerName: l.ServerInfo.ServerName, |
|
739
|
|
|
ScannedAt: time.Now(), |
|
740
|
|
|
ScanMode: l.ServerInfo.Mode.String(), |
|
741
|
|
|
Family: l.Distro.Family, |
|
742
|
|
|
Release: l.Distro.Release, |
|
743
|
|
|
Container: container, |
|
744
|
|
|
Platform: l.Platform, |
|
745
|
|
|
IPv4Addrs: l.ServerInfo.IPv4Addrs, |
|
746
|
|
|
IPv6Addrs: l.ServerInfo.IPv6Addrs, |
|
747
|
|
|
ScannedCves: l.VulnInfos, |
|
748
|
|
|
RunningKernel: l.Kernel, |
|
749
|
|
|
Packages: l.Packages, |
|
750
|
|
|
SrcPackages: l.SrcPackages, |
|
751
|
|
|
Optional: l.ServerInfo.Optional, |
|
752
|
|
|
Errors: errs, |
|
753
|
|
|
} |
|
754
|
|
|
} |
|
755
|
|
|
|
|
756
|
|
|
func (l *base) setErrs(errs []error) { |
|
757
|
|
|
l.errs = errs |
|
758
|
|
|
} |
|
759
|
|
|
|
|
760
|
|
|
func (l *base) getErrs() []error { |
|
761
|
|
|
return l.errs |
|
762
|
|
|
} |
|
763
|
|
|
|
|
764
|
|
|
const ( |
|
765
|
|
|
systemd = "systemd" |
|
766
|
|
|
upstart = "upstart" |
|
767
|
|
|
sysVinit = "init" |
|
768
|
|
|
) |
|
769
|
|
|
|
|
770
|
|
|
// https://unix.stackexchange.com/questions/196166/how-to-find-out-if-a-system-uses-sysv-upstart-or-systemd-initsystem |
|
771
|
|
|
func (l *base) detectInitSystem() (string, error) { |
|
772
|
|
|
var f func(string) (string, error) |
|
773
|
|
|
f = func(cmd string) (string, error) { |
|
774
|
|
|
r := l.exec(cmd, sudo) |
|
775
|
|
|
if !r.isSuccess() { |
|
776
|
|
|
return "", fmt.Errorf("Failed to stat %s: %s", cmd, r) |
|
777
|
|
|
} |
|
778
|
|
|
scanner := bufio.NewScanner(strings.NewReader(r.Stdout)) |
|
779
|
|
|
scanner.Scan() |
|
780
|
|
|
line := strings.TrimSpace(scanner.Text()) |
|
781
|
|
|
if strings.Contains(line, "systemd") { |
|
782
|
|
|
return systemd, nil |
|
783
|
|
|
} else if strings.Contains(line, "upstart") { |
|
784
|
|
|
return upstart, nil |
|
785
|
|
|
} else if strings.Contains(line, "File: ‘/proc/1/exe’ -> ‘/sbin/init’") || |
|
786
|
|
|
strings.Contains(line, "File: `/proc/1/exe' -> `/sbin/init'") { |
|
787
|
|
|
return f("stat /sbin/init") |
|
788
|
|
|
} else if line == "File: ‘/sbin/init’" || |
|
789
|
|
|
line == "File: `/sbin/init'" { |
|
790
|
|
|
r := l.exec("/sbin/init --version", noSudo) |
|
791
|
|
|
if r.isSuccess() { |
|
792
|
|
|
if strings.Contains(r.Stdout, "upstart") { |
|
793
|
|
|
return upstart, nil |
|
794
|
|
|
} |
|
795
|
|
|
} |
|
796
|
|
|
return sysVinit, nil |
|
797
|
|
|
} |
|
798
|
|
|
return "", fmt.Errorf("Failed to detect a init system: %s", line) |
|
799
|
|
|
} |
|
800
|
|
|
return f("stat /proc/1/exe") |
|
801
|
|
|
} |
|
802
|
|
|
|
|
803
|
|
|
func (l *base) detectServiceName(pid string) (string, error) { |
|
804
|
|
|
cmd := fmt.Sprintf("systemctl status --quiet --no-pager %s", pid) |
|
805
|
|
|
r := l.exec(cmd, noSudo) |
|
806
|
|
|
if !r.isSuccess() { |
|
807
|
|
|
return "", fmt.Errorf("Failed to stat %s: %s", cmd, r) |
|
808
|
|
|
} |
|
809
|
|
|
return l.parseSystemctlStatus(r.Stdout), nil |
|
810
|
|
|
} |
|
811
|
|
|
|
|
812
|
|
|
func (l *base) parseSystemctlStatus(stdout string) string { |
|
813
|
|
|
scanner := bufio.NewScanner(strings.NewReader(stdout)) |
|
814
|
|
|
scanner.Scan() |
|
815
|
|
|
line := scanner.Text() |
|
816
|
|
|
ss := strings.Fields(line) |
|
817
|
|
|
if len(ss) < 2 || strings.HasPrefix(line, "Failed to get unit for PID") { |
|
818
|
|
|
return "" |
|
819
|
|
|
} |
|
820
|
|
|
return ss[1] |
|
821
|
|
|
} |
|
822
|
|
|
|
future-architect /
vuls
