scan.*base.parseIP - Code Metrics - Inspection of "[WIP] WordPress Vulnerability Scan (core, plugin,..." - future-architect/vuls - Measure and Improve Code Quality continuously with Scrutinizer

Test Setup Failed

Pull Request — master (#769)

unknown

created 2019-01-31 16:57 UTC

scan.*base.parseIP B

↳ Parent: scan/base.go

Complexity

Conditions

Size

Total Lines	21
Code Lines	16

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	7
eloc	16
dl	0
loc	21
rs	8
c	0
b	0
f	0
nop	1

/* Vuls - Vulnerability Scanner
Copyright (C) 2016  Future Corporation , Japan.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package scan

import (
	"bufio"
	"encoding/json"
	"fmt"
	"net"
	"regexp"
	"strings"
	"time"

	"github.com/future-architect/vuls/config"
	"github.com/future-architect/vuls/models"
	"github.com/hashicorp/go-version"
	"github.com/sirupsen/logrus"
	"github.com/k0kubun/pp"
)

type base struct {
	ServerInfo config.ServerInfo
	Distro     config.Distro
	Platform   models.Platform
	osPackages

	log  *logrus.Entry
	errs []error
}

func (l *base) scanWp() (err error) {
	if len(l.ServerInfo.WpPath) == 0 && len(l.ServerInfo.WpToken) == 0 {
		return nil
	}

	var unsecures []models.VulnInfo
	if unsecures, err = detectWp(l.ServerInfo); err != nil {
		l.log.Errorf("Failed to scan wordpress: %s", err)
		return err
	}
	l.WpVulnInfos = map[string]models.VulnInfo{}
	for _, i := range unsecures {
		l.WpVulnInfos[i.CveID] = i
	}

	return
}

//WpCveInfos is for wpvulndb's json
type WpCveInfos struct {
	ReleaseDate     string      `json:"release_date"`
	ChangelogURL    string      `json:"changelog_url"`
	Status          string      `json:"status"`
	LatestVersion   string      `json:"latest_version"`
	LastUpdated     string      `json:"last_updated"`
	Popular         bool        `json:"popular"`
	Vulnerabilities []WpCveInfo `json:"vulnerabilities"`
	Error           string      `json:"error"`
}

//WpCveInfo is for wpvulndb's json
type WpCveInfo struct {
	ID            int        `json:"id"`
	Title         string     `json:"title"`
	CreatedAt     string     `json:"created_at"`
	UpdatedAt     string     `json:"updated_at"`
	PublishedDate string     `json:"Published_date"`
	VulnType      string     `json:"Vuln_type"`
	References    References `json:"references"`
	FixedIn       string     `json:"fixed_in"`
}

//References is for wpvulndb's json
type References struct {
	URL     []string `json:"url"`
	Cve     []string `json:"cve"`
	Secunia []string `json:"secunia"`
}

func detectWp(c config.ServerInfo) (rs []models.VulnInfo, err error) {

	var coreVuln []models.VulnInfo
	if coreVuln, err = detectWpCore(c); err != nil {
		return
	}
	for _, i := range coreVuln {
		rs = append(rs, i)
	}

	var themeVuln []models.VulnInfo
	if themeVuln, err = detectWpTheme(c); err != nil {
		return
	}
	for _, i := range themeVuln {
		rs = append(rs, i)
	}

	var pluginVuln []models.VulnInfo
	if pluginVuln, err = detectWpPlugin(c); err != nil {
		return
	}
	for _, i := range pluginVuln {
		rs = append(rs, i)
	}

	return
}

func detectWpCore(c config.ServerInfo) (rs []models.VulnInfo, err error) {
	cmd := fmt.Sprintf("wp core version --path=%s", c.WpPath)

	var coreVersion string
	if r := exec(c, cmd, noSudo); r.isSuccess() {
		tmp := strings.Split(r.Stdout, ".")
		coreVersion = strings.Join(tmp, "")
		coreVersion = strings.TrimRight(coreVersion, "\r\n")
		if len(coreVersion) == 0 {
			return
		}
	}
	cmd = fmt.Sprintf("curl -k -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/wordpresses/%s", c.WpToken, coreVersion)
	if r := exec(c, cmd, noSudo); r.isSuccess() {
		data := map[string]WpCveInfos{}
		if err = json.Unmarshal([]byte(r.Stdout), &data); err != nil {
			return
		}
		for _, i := range data {
			if len(i.Vulnerabilities) == 0 {
				continue
			}
			for _, e := range i.Vulnerabilities {
				var cveIDs []string
				for _, k := range e.References.Cve {
					cveIDs = append(cveIDs, "CVE-"+k)
				}

				for _, cveID := range cveIDs {
					rs = append(rs, models.VulnInfo{
						CveID: cveID,
					})
				}
			}
		}
	}
	return
}

//WpStatus is for wp command
type WpStatus struct {
	Name    string `json:"-"`
	Status  string `json:"-"`
	Update  string `json:"-"`
	Version string `json:"-"`
}

func detectWpTheme(c config.ServerInfo) (rs []models.VulnInfo, err error) {
	cmd := fmt.Sprintf("wp theme list --path=%s", c.WpPath)

	var themes []WpStatus
	if r := exec(c, cmd, noSudo); r.isSuccess() {
		themes = parseStatus(r.Stdout)
	}

	for _, theme := range themes {
		cmd := fmt.Sprintf("curl -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/themes/%s", c.WpToken, theme.Name)
		if r := exec(c, cmd, noSudo); r.isSuccess() {
			data := map[string]WpCveInfos{}
			if err = json.Unmarshal([]byte(r.Stdout), &data); err != nil {
				var jsonError WpCveInfos
				if err = json.Unmarshal([]byte(r.Stdout), &jsonError); err != nil {
					return
				}
				continue
			}
			for _, i := range data {
				if len(i.Vulnerabilities) == 0 {
					continue
				}
				if len(i.Error) != 0 {
					continue
				}
				for _, e := range i.Vulnerabilities {
					v1, _ := version.NewVersion(theme.Version)
					v2, _ := version.NewVersion(e.FixedIn)
					if v1.LessThan(v2) {
						if len(e.References.Cve) == 0 {
							continue
						}
						var cveIDs []string
						for _, k := range e.References.Cve {
							cveIDs = append(cveIDs, "CVE-"+k)
						}

						for _, cveID := range cveIDs {
							rs = append(rs, models.VulnInfo{
								CveID: cveID,
							})
						}
					}
				}
			}

		}
	}
	return
}

func detectWpPlugin(c config.ServerInfo) (rs []models.VulnInfo, err error) {
	cmd := fmt.Sprintf("wp plugin list --path=%s", c.WpPath)

	var plugins []WpStatus
	if r := exec(c, cmd, noSudo); r.isSuccess() {
		plugins = parseStatus(r.Stdout)
	}

	for _, plugin := range plugins {
		cmd := fmt.Sprintf("curl -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/plugins/%s", c.WpToken, plugin.Name)

		if r := exec(c, cmd, noSudo); r.isSuccess() {
			data := map[string]WpCveInfos{}
			if err = json.Unmarshal([]byte(r.Stdout), &data); err != nil {
				var jsonError WpCveInfos
				if err = json.Unmarshal([]byte(r.Stdout), &jsonError); err != nil {
					return
				}
				continue
			}
			for _, i := range data {
				if len(i.Vulnerabilities) == 0 {
					continue
				}
				if len(i.Error) != 0 {
					continue
				}
				for _, e := range i.Vulnerabilities {
					v1, _ := version.NewVersion(plugin.Version)
					v2, _ := version.NewVersion(e.FixedIn)
					if v1.LessThan(v2) {
						if len(e.References.Cve) == 0 {
							continue
						}
						var cveIDs []string
						for _, k := range e.References.Cve {
							cveIDs = append(cveIDs, "CVE-"+k)
						}

						for _, cveID := range cveIDs {
							rs = append(rs, models.VulnInfo{
								CveID: cveID,
							})
						}
					}
				}
			}
		}
	}
	return
}

func parseStatus(r string) (themes []WpStatus) {
	tmp := strings.Split(r, "\r\n")
	tmp = unset(tmp, 0)
	tmp = unset(tmp, 0)
	tmp = unset(tmp, 0)
	tmp = unset(tmp, len(tmp)-1)
	tmp = unset(tmp, len(tmp)-1)
	for _, k := range tmp {
		theme := strings.Split(k, "|")
		themes = append(themes, WpStatus{
			Name:    strings.TrimSpace(theme[1]),
			Status:  strings.TrimSpace(theme[2]),
			Update:  strings.TrimSpace(theme[3]),
			Version: strings.TrimSpace(theme[4]),
		})
	}
	return
}

func unset(s []string, i int) []string {
	if i >= len(s) {
		return s
	}
	return append(s[:i], s[i+1:]...)
}

func (l *base) wpConvertToModel() models.VulnInfos {
	return l.WpVulnInfos
}

func (l *base) exec(cmd string, sudo bool) execResult {
	return exec(l.ServerInfo, cmd, sudo, l.log)
}

func (l *base) setServerInfo(c config.ServerInfo) {
	l.ServerInfo = c
}

func (l *base) getServerInfo() config.ServerInfo {
	return l.ServerInfo
}

func (l *base) setDistro(fam, rel string) {
	d := config.Distro{
		Family:  fam,
		Release: rel,
	}
	l.Distro = d

	s := l.getServerInfo()
	s.Distro = d
	l.setServerInfo(s)
}

func (l *base) getDistro() config.Distro {
	return l.Distro
}

func (l *base) setPlatform(p models.Platform) {
	l.Platform = p
}

func (l *base) getPlatform() models.Platform {
	return l.Platform
}

func (l *base) runningKernel() (release, version string, err error) {
	r := l.exec("uname -r", noSudo)
	if !r.isSuccess() {
		return "", "", fmt.Errorf("Failed to SSH: %s", r)
	}
	release = strings.TrimSpace(r.Stdout)

	switch l.Distro.Family {
	case config.Debian:
		r := l.exec("uname -a", noSudo)
		if !r.isSuccess() {
			return "", "", fmt.Errorf("Failed to SSH: %s", r)
		}
		ss := strings.Fields(r.Stdout)
		if 6 < len(ss) {
			version = ss[6]
		}
	}
	return
}

func (l *base) allContainers() (containers []config.Container, err error) {
	switch l.ServerInfo.ContainerType {
	case "", "docker":
		stdout, err := l.dockerPs("-a --format '{{.ID}} {{.Names}} {{.Image}}'")
		if err != nil {
			return containers, err
		}
		return l.parseDockerPs(stdout)
	case "lxd":
		stdout, err := l.lxdPs("-c n")
		if err != nil {
			return containers, err
		}
		return l.parseLxdPs(stdout)
	case "lxc":
		stdout, err := l.lxcPs("-1")
		if err != nil {
			return containers, err
		}
		return l.parseLxcPs(stdout)
	default:
		return containers, fmt.Errorf(
			"Not supported yet: %s", l.ServerInfo.ContainerType)
	}
}

func (l *base) runningContainers() (containers []config.Container, err error) {
	switch l.ServerInfo.ContainerType {
	case "", "docker":
		stdout, err := l.dockerPs("--format '{{.ID}} {{.Names}} {{.Image}}'")
		if err != nil {
			return containers, err
		}
		return l.parseDockerPs(stdout)
	case "lxd":
		stdout, err := l.lxdPs("volatile.last_state.power=RUNNING -c n")
		if err != nil {
			return containers, err
		}
		return l.parseLxdPs(stdout)
	case "lxc":
		stdout, err := l.lxcPs("-1 --running")
		if err != nil {
			return containers, err
		}
		return l.parseLxcPs(stdout)
	default:
		return containers, fmt.Errorf(
			"Not supported yet: %s", l.ServerInfo.ContainerType)
	}
}

func (l *base) exitedContainers() (containers []config.Container, err error) {
	switch l.ServerInfo.ContainerType {
	case "", "docker":
		stdout, err := l.dockerPs("--filter 'status=exited' --format '{{.ID}} {{.Names}} {{.Image}}'")
		if err != nil {
			return containers, err
		}
		return l.parseDockerPs(stdout)
	case "lxd":
		stdout, err := l.lxdPs("volatile.last_state.power=STOPPED -c n")
		if err != nil {
			return containers, err
		}
		return l.parseLxdPs(stdout)
	case "lxc":
		stdout, err := l.lxcPs("-1 --stopped")
		if err != nil {
			return containers, err
		}
		return l.parseLxcPs(stdout)
	default:
		return containers, fmt.Errorf(
			"Not supported yet: %s", l.ServerInfo.ContainerType)
	}
}

func (l *base) dockerPs(option string) (string, error) {
	cmd := fmt.Sprintf("docker ps %s", option)
	r := l.exec(cmd, noSudo)
	if !r.isSuccess() {
		return "", fmt.Errorf("Failed to SSH: %s", r)
	}
	return r.Stdout, nil
}

func (l *base) lxdPs(option string) (string, error) {
	cmd := fmt.Sprintf("lxc list %s", option)
	r := l.exec(cmd, noSudo)
	if !r.isSuccess() {
		return "", fmt.Errorf("failed to SSH: %s", r)
	}
	return r.Stdout, nil
}

func (l *base) lxcPs(option string) (string, error) {
	cmd := fmt.Sprintf("lxc-ls %s 2>/dev/null", option)
	r := l.exec(cmd, sudo)
	if !r.isSuccess() {
		return "", fmt.Errorf("failed to SSH: %s", r)
	}
	return r.Stdout, nil
}

func (l *base) parseDockerPs(stdout string) (containers []config.Container, err error) {
	lines := strings.Split(stdout, "\n")
	for _, line := range lines {
		fields := strings.Fields(line)
		if len(fields) == 0 {
			break
		}
		if len(fields) != 3 {
			return containers, fmt.Errorf("Unknown format: %s", line)
		}
		containers = append(containers, config.Container{
			ContainerID: fields[0],
			Name:        fields[1],
			Image:       fields[2],
		})
	}
	return
}

func (l *base) parseLxdPs(stdout string) (containers []config.Container, err error) {
	lines := strings.Split(stdout, "\n")
	for i, line := range lines[3:] {
		if i%2 == 1 {
			continue
		}
		fields := strings.Fields(strings.Replace(line, "|", " ", -1))
		if len(fields) == 0 {
			break
		}
		if len(fields) != 1 {
			return containers, fmt.Errorf("Unknown format: %s", line)
		}
		containers = append(containers, config.Container{
			ContainerID: fields[0],
			Name:        fields[0],
		})
	}
	return
}

func (l *base) parseLxcPs(stdout string) (containers []config.Container, err error) {
	lines := strings.Split(stdout, "\n")
	for _, line := range lines {
		fields := strings.Fields(line)
		if len(fields) == 0 {
			break
		}
		containers = append(containers, config.Container{
			ContainerID: fields[0],
			Name:        fields[0],
		})
	}
	return
}

// ip executes ip command and returns IP addresses
func (l *base) ip() ([]string, []string, error) {
	// e.g.
	// 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
	// 2: eth0    inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0
	// 2: eth0    inet6 fe80::5054:ff:fe2a:864c/64 scope link \       valid_lft forever preferred_lft forever
	r := l.exec("/sbin/ip -o addr", noSudo)
	if !r.isSuccess() {
		return nil, nil, fmt.Errorf("Failed to detect IP address: %v", r)
	}
	ipv4Addrs, ipv6Addrs := l.parseIP(r.Stdout)
	return ipv4Addrs, ipv6Addrs, nil
}

// parseIP parses the results of ip command
func (l *base) parseIP(stdout string) (ipv4Addrs []string, ipv6Addrs []string) {
	lines := strings.Split(stdout, "\n")
	for _, line := range lines {
		fields := strings.Fields(line)
		if len(fields) < 4 {
			continue
		}
		ip, _, err := net.ParseCIDR(fields[3])
		if err != nil {
			continue
		}
		if !ip.IsGlobalUnicast() {
			continue
		}
		if ipv4 := ip.To4(); ipv4 != nil {
			ipv4Addrs = append(ipv4Addrs, ipv4.String())
		} else {
			ipv6Addrs = append(ipv6Addrs, ip.String())
		}
	}
	return
}

func (l *base) detectPlatform() {
	if l.getServerInfo().Mode.IsOffline() {
		l.setPlatform(models.Platform{Name: "unknown"})
		return
	}
	ok, instanceID, err := l.detectRunningOnAws()
	if err != nil {
		l.setPlatform(models.Platform{Name: "other"})
		return
	}
	if ok {
		l.setPlatform(models.Platform{
			Name:       "aws",
			InstanceID: instanceID,
		})
		return
	}

	//TODO Azure, GCP...
	l.setPlatform(models.Platform{Name: "other"})
	return
}

func (l *base) detectRunningOnAws() (ok bool, instanceID string, err error) {
	if r := l.exec("type curl", noSudo); r.isSuccess() {
		cmd := "curl --max-time 1 --noproxy 169.254.169.254 http://169.254.169.254/latest/meta-data/instance-id"
		r := l.exec(cmd, noSudo)
		if r.isSuccess() {
			id := strings.TrimSpace(r.Stdout)
			if !l.isAwsInstanceID(id) {
				return false, "", nil
			}
			return true, id, nil
		}

		switch r.ExitStatus {
		case 28, 7:
			// Not running on AWS
			//  7   Failed to connect to host.
			// 28  operation timeout.
			return false, "", nil
		}
	}

	if r := l.exec("type wget", noSudo); r.isSuccess() {
		cmd := "wget --tries=3 --timeout=1 --no-proxy -q -O - http://169.254.169.254/latest/meta-data/instance-id"
		r := l.exec(cmd, noSudo)
		if r.isSuccess() {
			id := strings.TrimSpace(r.Stdout)
			if !l.isAwsInstanceID(id) {
				return false, "", nil
			}
			return true, id, nil
		}

		switch r.ExitStatus {
		case 4, 8:
			// Not running on AWS
			// 4   Network failure
			// 8   Server issued an error response.
			return false, "", nil
		}
	}
	return false, "", fmt.Errorf(
		"Failed to curl or wget to AWS instance metadata on %s. container: %s",
		l.ServerInfo.ServerName, l.ServerInfo.Container.Name)
}

// http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/resource-ids.html
var awsInstanceIDPattern = regexp.MustCompile(`^i-[0-9a-f]+$`)

func (l *base) isAwsInstanceID(str string) bool {
	return awsInstanceIDPattern.MatchString(str)
}

func (l *base) convertToModel() models.ScanResult {
	ctype := l.ServerInfo.ContainerType
	if l.ServerInfo.Container.ContainerID != "" && ctype == "" {
		ctype = "docker"
	}
	container := models.Container{
		ContainerID: l.ServerInfo.Container.ContainerID,
		Name:        l.ServerInfo.Container.Name,
		Image:       l.ServerInfo.Container.Image,
		Type:        ctype,
	}

	errs := []string{}
	for _, e := range l.errs {
		errs = append(errs, fmt.Sprintf("%s", e))
	}

	return models.ScanResult{
		JSONVersion:   models.JSONVersion,
		ServerName:    l.ServerInfo.ServerName,
		ScannedAt:     time.Now(),
		ScanMode:      l.ServerInfo.Mode.String(),
		Family:        l.Distro.Family,
		Release:       l.Distro.Release,
		Container:     container,
		Platform:      l.Platform,
		IPv4Addrs:     l.ServerInfo.IPv4Addrs,
		IPv6Addrs:     l.ServerInfo.IPv6Addrs,
		ScannedCves:   l.VulnInfos,
		RunningKernel: l.Kernel,
		Packages:      l.Packages,
		SrcPackages:   l.SrcPackages,
		Optional:      l.ServerInfo.Optional,
		Errors:        errs,
	}
}

func (l *base) setErrs(errs []error) {
	l.errs = errs
}

func (l *base) getErrs() []error {
	return l.errs
}

const (
	systemd  = "systemd"
	upstart  = "upstart"
	sysVinit = "init"
)

// https://unix.stackexchange.com/questions/196166/how-to-find-out-if-a-system-uses-sysv-upstart-or-systemd-initsystem
func (l *base) detectInitSystem() (string, error) {
	var f func(string) (string, error)
	f = func(cmd string) (string, error) {
		r := l.exec(cmd, sudo)
		if !r.isSuccess() {
			return "", fmt.Errorf("Failed to stat %s: %s", cmd, r)
		}
		scanner := bufio.NewScanner(strings.NewReader(r.Stdout))
		scanner.Scan()
		line := strings.TrimSpace(scanner.Text())
		if strings.Contains(line, "systemd") {
			return systemd, nil
		} else if strings.Contains(line, "upstart") {
			return upstart, nil
		} else if strings.Contains(line, "File: ‘/proc/1/exe’ -> ‘/sbin/init’") ||
			strings.Contains(line, "File: `/proc/1/exe' -> `/sbin/init'") {
			return f("stat /sbin/init")
		} else if line == "File: ‘/sbin/init’" ||
			line == "File: `/sbin/init'" {
			r := l.exec("/sbin/init --version", noSudo)
			if r.isSuccess() {
				if strings.Contains(r.Stdout, "upstart") {
					return upstart, nil
				}
			}
			return sysVinit, nil
		}
		return "", fmt.Errorf("Failed to detect a init system: %s", line)
	}
	return f("stat /proc/1/exe")
}

func (l *base) detectServiceName(pid string) (string, error) {
	cmd := fmt.Sprintf("systemctl status --quiet --no-pager %s", pid)
	r := l.exec(cmd, noSudo)
	if !r.isSuccess() {
		return "", fmt.Errorf("Failed to stat %s: %s", cmd, r)
	}
	return l.parseSystemctlStatus(r.Stdout), nil
}

func (l *base) parseSystemctlStatus(stdout string) string {
	scanner := bufio.NewScanner(strings.NewReader(stdout))
	scanner.Scan()
	line := scanner.Text()
	ss := strings.Fields(line)
	if len(ss) < 2 || strings.HasPrefix(line, "Failed to get unit for PID") {
		return ""
	}
	return ss[1]
}


1			/* Vuls - Vulnerability Scanner
2			Copyright (C) 2016 Future Corporation , Japan.
3
4			This program is free software: you can redistribute it and/or modify
5			it under the terms of the GNU General Public License as published by
6			the Free Software Foundation, either version 3 of the License, or
7			(at your option) any later version.
8
9			This program is distributed in the hope that it will be useful,
10			but WITHOUT ANY WARRANTY; without even the implied warranty of
11			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12			GNU General Public License for more details.
13
14			You should have received a copy of the GNU General Public License
15			along with this program. If not, see <http://www.gnu.org/licenses/>.
16			*/
17
18			package scan
19
20			import (
21			"bufio"
22			"encoding/json"
23			"fmt"
24			"net"
25			"regexp"
26			"strings"
27			"time"
28
29			"github.com/future-architect/vuls/config"
30			"github.com/future-architect/vuls/models"
31			"github.com/hashicorp/go-version"
32			"github.com/sirupsen/logrus"
33			"github.com/k0kubun/pp"
34			)
35
36			type base struct {
37			ServerInfo config.ServerInfo
38			Distro config.Distro
39			Platform models.Platform
40			osPackages
41
42			log *logrus.Entry
43			errs []error
44			}
45
46			func (l *base) scanWp() (err error) {
47			if len(l.ServerInfo.WpPath) == 0 && len(l.ServerInfo.WpToken) == 0 {
48			return nil
49			}
50
51			var unsecures []models.VulnInfo
52			if unsecures, err = detectWp(l.ServerInfo); err != nil {
53			l.log.Errorf("Failed to scan wordpress: %s", err)
54			return err
55			}
56			l.WpVulnInfos = map[string]models.VulnInfo{}
57			for _, i := range unsecures {
58			l.WpVulnInfos[i.CveID] = i
59			}
60
61			return
62			}
63
64			//WpCveInfos is for wpvulndb's json
65			type WpCveInfos struct {
66			ReleaseDate string `json:"release_date"`
67			ChangelogURL string `json:"changelog_url"`
68			Status string `json:"status"`
69			LatestVersion string `json:"latest_version"`
70			LastUpdated string `json:"last_updated"`
71			Popular bool `json:"popular"`
72			Vulnerabilities []WpCveInfo `json:"vulnerabilities"`
73			Error string `json:"error"`
74			}
75
76			//WpCveInfo is for wpvulndb's json
77			type WpCveInfo struct {
78			ID int `json:"id"`
79			Title string `json:"title"`
80			CreatedAt string `json:"created_at"`
81			UpdatedAt string `json:"updated_at"`
82			PublishedDate string `json:"Published_date"`
83			VulnType string `json:"Vuln_type"`
84			References References `json:"references"`
85			FixedIn string `json:"fixed_in"`
86			}
87
88			//References is for wpvulndb's json
89			type References struct {
90			URL []string `json:"url"`
91			Cve []string `json:"cve"`
92			Secunia []string `json:"secunia"`
93			}
94
95			func detectWp(c config.ServerInfo) (rs []models.VulnInfo, err error) {
96
97			var coreVuln []models.VulnInfo
98			if coreVuln, err = detectWpCore(c); err != nil {
99			return
100			}
101			for _, i := range coreVuln {
102			rs = append(rs, i)
103			}
104
105			var themeVuln []models.VulnInfo
106			if themeVuln, err = detectWpTheme(c); err != nil {
107			return
108			}
109			for _, i := range themeVuln {
110			rs = append(rs, i)
111			}
112
113			var pluginVuln []models.VulnInfo
114			if pluginVuln, err = detectWpPlugin(c); err != nil {
115			return
116			}
117			for _, i := range pluginVuln {
118			rs = append(rs, i)
119			}
120
121			return
122			}
123
124			func detectWpCore(c config.ServerInfo) (rs []models.VulnInfo, err error) {
125			cmd := fmt.Sprintf("wp core version --path=%s", c.WpPath)
126
127			var coreVersion string
128			if r := exec(c, cmd, noSudo); r.isSuccess() {
129			tmp := strings.Split(r.Stdout, ".")
130			coreVersion = strings.Join(tmp, "")
131			coreVersion = strings.TrimRight(coreVersion, "\r\n")
132			if len(coreVersion) == 0 {
133			return
134			}
135			}
136			cmd = fmt.Sprintf("curl -k -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/wordpresses/%s", c.WpToken, coreVersion)
137			if r := exec(c, cmd, noSudo); r.isSuccess() {
138			data := map[string]WpCveInfos{}
139			if err = json.Unmarshal([]byte(r.Stdout), &data); err != nil {
140			return
141			}
142			for _, i := range data {
143			if len(i.Vulnerabilities) == 0 {
144			continue
145			}
146			for _, e := range i.Vulnerabilities {
147			var cveIDs []string
148			for _, k := range e.References.Cve {
149			cveIDs = append(cveIDs, "CVE-"+k)
150			}
151
152			for _, cveID := range cveIDs {
153			rs = append(rs, models.VulnInfo{
154			CveID: cveID,
155			})
156			}
157			}
158			}
159			}
160			return
161			}
162
163			//WpStatus is for wp command
164			type WpStatus struct {
165			Name string `json:"-"`
166			Status string `json:"-"`
167			Update string `json:"-"`
168			Version string `json:"-"`
169			}
170
171			func detectWpTheme(c config.ServerInfo) (rs []models.VulnInfo, err error) {
172			cmd := fmt.Sprintf("wp theme list --path=%s", c.WpPath)
173
174			var themes []WpStatus
175			if r := exec(c, cmd, noSudo); r.isSuccess() {
176			themes = parseStatus(r.Stdout)
177			}
178
179			for _, theme := range themes {
180			cmd := fmt.Sprintf("curl -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/themes/%s", c.WpToken, theme.Name)
181			if r := exec(c, cmd, noSudo); r.isSuccess() {
182			data := map[string]WpCveInfos{}
183			if err = json.Unmarshal([]byte(r.Stdout), &data); err != nil {
184			var jsonError WpCveInfos
185			if err = json.Unmarshal([]byte(r.Stdout), &jsonError); err != nil {
186			return
187			}
188			continue
189			}
190			for _, i := range data {
191			if len(i.Vulnerabilities) == 0 {
192			continue
193			}
194			if len(i.Error) != 0 {
195			continue
196			}
197			for _, e := range i.Vulnerabilities {
198			v1, _ := version.NewVersion(theme.Version)
199			v2, _ := version.NewVersion(e.FixedIn)
200			if v1.LessThan(v2) {
201			if len(e.References.Cve) == 0 {
202			continue
203			}
204			var cveIDs []string
205			for _, k := range e.References.Cve {
206			cveIDs = append(cveIDs, "CVE-"+k)
207			}
208
209			for _, cveID := range cveIDs {
210			rs = append(rs, models.VulnInfo{
211			CveID: cveID,
212			})
213			}
214			}
215			}
216			}
217
218			}
219			}
220			return
221			}
222
223			func detectWpPlugin(c config.ServerInfo) (rs []models.VulnInfo, err error) {
224			cmd := fmt.Sprintf("wp plugin list --path=%s", c.WpPath)
225
226			var plugins []WpStatus
227			if r := exec(c, cmd, noSudo); r.isSuccess() {
228			plugins = parseStatus(r.Stdout)
229			}
230
231			for _, plugin := range plugins {
232			cmd := fmt.Sprintf("curl -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/plugins/%s", c.WpToken, plugin.Name)
233
234			if r := exec(c, cmd, noSudo); r.isSuccess() {
235			data := map[string]WpCveInfos{}
236			if err = json.Unmarshal([]byte(r.Stdout), &data); err != nil {
237			var jsonError WpCveInfos
238			if err = json.Unmarshal([]byte(r.Stdout), &jsonError); err != nil {
239			return
240			}
241			continue
242			}
243			for _, i := range data {
244			if len(i.Vulnerabilities) == 0 {
245			continue
246			}
247			if len(i.Error) != 0 {
248			continue
249			}
250			for _, e := range i.Vulnerabilities {
251			v1, _ := version.NewVersion(plugin.Version)
252			v2, _ := version.NewVersion(e.FixedIn)
253			if v1.LessThan(v2) {
254			if len(e.References.Cve) == 0 {
255			continue
256			}
257			var cveIDs []string
258			for _, k := range e.References.Cve {
259			cveIDs = append(cveIDs, "CVE-"+k)
260			}
261
262			for _, cveID := range cveIDs {
263			rs = append(rs, models.VulnInfo{
264			CveID: cveID,
265			})
266			}
267			}
268			}
269			}
270			}
271			}
272			return
273			}
274
275			func parseStatus(r string) (themes []WpStatus) {
276			tmp := strings.Split(r, "\r\n")
277			tmp = unset(tmp, 0)
278			tmp = unset(tmp, 0)
279			tmp = unset(tmp, 0)
280			tmp = unset(tmp, len(tmp)-1)
281			tmp = unset(tmp, len(tmp)-1)
282			for _, k := range tmp {
283			theme := strings.Split(k, "\|")
284			themes = append(themes, WpStatus{
285			Name: strings.TrimSpace(theme[1]),
286			Status: strings.TrimSpace(theme[2]),
287			Update: strings.TrimSpace(theme[3]),
288			Version: strings.TrimSpace(theme[4]),
289			})
290			}
291			return
292			}
293
294			func unset(s []string, i int) []string {
295			if i >= len(s) {
296			return s
297			}
298			return append(s[:i], s[i+1:]...)
299			}
300
301			func (l *base) wpConvertToModel() models.VulnInfos {
302			return l.WpVulnInfos
303			}
304
305			func (l *base) exec(cmd string, sudo bool) execResult {
306			return exec(l.ServerInfo, cmd, sudo, l.log)
307			}
308
309			func (l *base) setServerInfo(c config.ServerInfo) {
310			l.ServerInfo = c
311			}
312
313			func (l *base) getServerInfo() config.ServerInfo {
314			return l.ServerInfo
315			}
316
317			func (l *base) setDistro(fam, rel string) {
318			d := config.Distro{
319			Family: fam,
320			Release: rel,
321			}
322			l.Distro = d
323
324			s := l.getServerInfo()
325			s.Distro = d
326			l.setServerInfo(s)
327			}
328
329			func (l *base) getDistro() config.Distro {
330			return l.Distro
331			}
332
333			func (l *base) setPlatform(p models.Platform) {
334			l.Platform = p
335			}
336
337			func (l *base) getPlatform() models.Platform {
338			return l.Platform
339			}
340
341			func (l *base) runningKernel() (release, version string, err error) {
342			r := l.exec("uname -r", noSudo)
343			if !r.isSuccess() {
344			return "", "", fmt.Errorf("Failed to SSH: %s", r)
345			}
346			release = strings.TrimSpace(r.Stdout)
347
348			switch l.Distro.Family {
349			case config.Debian:
350			r := l.exec("uname -a", noSudo)
351			if !r.isSuccess() {
352			return "", "", fmt.Errorf("Failed to SSH: %s", r)
353			}
354			ss := strings.Fields(r.Stdout)
355			if 6 < len(ss) {
356			version = ss[6]
357			}
358			}
359			return
360			}
361
362			func (l *base) allContainers() (containers []config.Container, err error) {
363			switch l.ServerInfo.ContainerType {
364			case "", "docker":
365			stdout, err := l.dockerPs("-a --format '{{.ID}} {{.Names}} {{.Image}}'")
366			if err != nil {
367			return containers, err
368			}
369			return l.parseDockerPs(stdout)
370			case "lxd":
371			stdout, err := l.lxdPs("-c n")
372			if err != nil {
373			return containers, err
374			}
375			return l.parseLxdPs(stdout)
376			case "lxc":
377			stdout, err := l.lxcPs("-1")
378			if err != nil {
379			return containers, err
380			}
381			return l.parseLxcPs(stdout)
382			default:
383			return containers, fmt.Errorf(
384			"Not supported yet: %s", l.ServerInfo.ContainerType)
385			}
386			}
387
388			func (l *base) runningContainers() (containers []config.Container, err error) {
389			switch l.ServerInfo.ContainerType {
390			case "", "docker":
391			stdout, err := l.dockerPs("--format '{{.ID}} {{.Names}} {{.Image}}'")
392			if err != nil {
393			return containers, err
394			}
395			return l.parseDockerPs(stdout)
396			case "lxd":
397			stdout, err := l.lxdPs("volatile.last_state.power=RUNNING -c n")
398			if err != nil {
399			return containers, err
400			}
401			return l.parseLxdPs(stdout)
402			case "lxc":
403			stdout, err := l.lxcPs("-1 --running")
404			if err != nil {
405			return containers, err
406			}
407			return l.parseLxcPs(stdout)
408			default:
409			return containers, fmt.Errorf(
410			"Not supported yet: %s", l.ServerInfo.ContainerType)
411			}
412			}
413
414			func (l *base) exitedContainers() (containers []config.Container, err error) {
415			switch l.ServerInfo.ContainerType {
416			case "", "docker":
417			stdout, err := l.dockerPs("--filter 'status=exited' --format '{{.ID}} {{.Names}} {{.Image}}'")
418			if err != nil {
419			return containers, err
420			}
421			return l.parseDockerPs(stdout)
422			case "lxd":
423			stdout, err := l.lxdPs("volatile.last_state.power=STOPPED -c n")
424			if err != nil {
425			return containers, err
426			}
427			return l.parseLxdPs(stdout)
428			case "lxc":
429			stdout, err := l.lxcPs("-1 --stopped")
430			if err != nil {
431			return containers, err
432			}
433			return l.parseLxcPs(stdout)
434			default:
435			return containers, fmt.Errorf(
436			"Not supported yet: %s", l.ServerInfo.ContainerType)
437			}
438			}
439
440			func (l *base) dockerPs(option string) (string, error) {
441			cmd := fmt.Sprintf("docker ps %s", option)
442			r := l.exec(cmd, noSudo)
443			if !r.isSuccess() {
444			return "", fmt.Errorf("Failed to SSH: %s", r)
445			}
446			return r.Stdout, nil
447			}
448
449			func (l *base) lxdPs(option string) (string, error) {
450			cmd := fmt.Sprintf("lxc list %s", option)
451			r := l.exec(cmd, noSudo)
452			if !r.isSuccess() {
453			return "", fmt.Errorf("failed to SSH: %s", r)
454			}
455			return r.Stdout, nil
456			}
457
458			func (l *base) lxcPs(option string) (string, error) {
459			cmd := fmt.Sprintf("lxc-ls %s 2>/dev/null", option)
460			r := l.exec(cmd, sudo)
461			if !r.isSuccess() {
462			return "", fmt.Errorf("failed to SSH: %s", r)
463			}
464			return r.Stdout, nil
465			}
466
467			func (l *base) parseDockerPs(stdout string) (containers []config.Container, err error) {
468			lines := strings.Split(stdout, "\n")
469			for _, line := range lines {
470			fields := strings.Fields(line)
471			if len(fields) == 0 {
472			break
473			}
474			if len(fields) != 3 {
475			return containers, fmt.Errorf("Unknown format: %s", line)
476			}
477			containers = append(containers, config.Container{
478			ContainerID: fields[0],
479			Name: fields[1],
480			Image: fields[2],
481			})
482			}
483			return
484			}
485
486			func (l *base) parseLxdPs(stdout string) (containers []config.Container, err error) {
487			lines := strings.Split(stdout, "\n")
488			for i, line := range lines[3:] {
489			if i%2 == 1 {
490			continue
491			}
492			fields := strings.Fields(strings.Replace(line, "\|", " ", -1))
493			if len(fields) == 0 {
494			break
495			}
496			if len(fields) != 1 {
497			return containers, fmt.Errorf("Unknown format: %s", line)
498			}
499			containers = append(containers, config.Container{
500			ContainerID: fields[0],
501			Name: fields[0],
502			})
503			}
504			return
505			}
506
507			func (l *base) parseLxcPs(stdout string) (containers []config.Container, err error) {
508			lines := strings.Split(stdout, "\n")
509			for _, line := range lines {
510			fields := strings.Fields(line)
511			if len(fields) == 0 {
512			break
513			}
514			containers = append(containers, config.Container{
515			ContainerID: fields[0],
516			Name: fields[0],
517			})
518			}
519			return
520			}
521
522			// ip executes ip command and returns IP addresses
523			func (l *base) ip() ([]string, []string, error) {
524			// e.g.
525			// 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
526			// 2: eth0 inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0
527			// 2: eth0 inet6 fe80::5054:ff:fe2a:864c/64 scope link \ valid_lft forever preferred_lft forever
528			r := l.exec("/sbin/ip -o addr", noSudo)
529			if !r.isSuccess() {
530			return nil, nil, fmt.Errorf("Failed to detect IP address: %v", r)
531			}
532			ipv4Addrs, ipv6Addrs := l.parseIP(r.Stdout)
533			return ipv4Addrs, ipv6Addrs, nil
534			}
535
536			// parseIP parses the results of ip command
537			func (l *base) parseIP(stdout string) (ipv4Addrs []string, ipv6Addrs []string) {
538			lines := strings.Split(stdout, "\n")
539			for _, line := range lines {
540			fields := strings.Fields(line)
541			if len(fields) < 4 {
542			continue
543			}
544			ip, _, err := net.ParseCIDR(fields[3])
545			if err != nil {
546			continue
547			}
548			if !ip.IsGlobalUnicast() {
549			continue
550			}
551			if ipv4 := ip.To4(); ipv4 != nil {
552			ipv4Addrs = append(ipv4Addrs, ipv4.String())
553			} else {
554			ipv6Addrs = append(ipv6Addrs, ip.String())
555			}
556			}
557			return
558			}
559
560			func (l *base) detectPlatform() {
561			if l.getServerInfo().Mode.IsOffline() {
562			l.setPlatform(models.Platform{Name: "unknown"})
563			return
564			}
565			ok, instanceID, err := l.detectRunningOnAws()
566			if err != nil {
567			l.setPlatform(models.Platform{Name: "other"})
568			return
569			}
570			if ok {
571			l.setPlatform(models.Platform{
572			Name: "aws",
573			InstanceID: instanceID,
574			})
575			return
576			}
577
578			//TODO Azure, GCP...
579			l.setPlatform(models.Platform{Name: "other"})
580			return
581			}
582
583			func (l *base) detectRunningOnAws() (ok bool, instanceID string, err error) {
584			if r := l.exec("type curl", noSudo); r.isSuccess() {
585			cmd := "curl --max-time 1 --noproxy 169.254.169.254 http://169.254.169.254/latest/meta-data/instance-id"
586			r := l.exec(cmd, noSudo)
587			if r.isSuccess() {
588			id := strings.TrimSpace(r.Stdout)
589			if !l.isAwsInstanceID(id) {
590			return false, "", nil
591			}
592			return true, id, nil
593			}
594
595			switch r.ExitStatus {
596			case 28, 7:
597			// Not running on AWS
598			// 7 Failed to connect to host.
599			// 28 operation timeout.
600			return false, "", nil
601			}
602			}
603
604			if r := l.exec("type wget", noSudo); r.isSuccess() {
605			cmd := "wget --tries=3 --timeout=1 --no-proxy -q -O - http://169.254.169.254/latest/meta-data/instance-id"
606			r := l.exec(cmd, noSudo)
607			if r.isSuccess() {
608			id := strings.TrimSpace(r.Stdout)
609			if !l.isAwsInstanceID(id) {
610			return false, "", nil
611			}
612			return true, id, nil
613			}
614
615			switch r.ExitStatus {
616			case 4, 8:
617			// Not running on AWS
618			// 4 Network failure
619			// 8 Server issued an error response.
620			return false, "", nil
621			}
622			}
623			return false, "", fmt.Errorf(
624			"Failed to curl or wget to AWS instance metadata on %s. container: %s",
625			l.ServerInfo.ServerName, l.ServerInfo.Container.Name)
626			}
627
628			// http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/resource-ids.html
629			var awsInstanceIDPattern = regexp.MustCompile(`^i-[0-9a-f]+$`)
630
631			func (l *base) isAwsInstanceID(str string) bool {
632			return awsInstanceIDPattern.MatchString(str)
633			}
634
635			func (l *base) convertToModel() models.ScanResult {
636			ctype := l.ServerInfo.ContainerType
637			if l.ServerInfo.Container.ContainerID != "" && ctype == "" {
638			ctype = "docker"
639			}
640			container := models.Container{
641			ContainerID: l.ServerInfo.Container.ContainerID,
642			Name: l.ServerInfo.Container.Name,
643			Image: l.ServerInfo.Container.Image,
644			Type: ctype,
645			}
646
647			errs := []string{}
648			for _, e := range l.errs {
649			errs = append(errs, fmt.Sprintf("%s", e))
650			}
651
652			return models.ScanResult{
653			JSONVersion: models.JSONVersion,
654			ServerName: l.ServerInfo.ServerName,
655			ScannedAt: time.Now(),
656			ScanMode: l.ServerInfo.Mode.String(),
657			Family: l.Distro.Family,
658			Release: l.Distro.Release,
659			Container: container,
660			Platform: l.Platform,
661			IPv4Addrs: l.ServerInfo.IPv4Addrs,
662			IPv6Addrs: l.ServerInfo.IPv6Addrs,
663			ScannedCves: l.VulnInfos,
664			RunningKernel: l.Kernel,
665			Packages: l.Packages,
666			SrcPackages: l.SrcPackages,
667			Optional: l.ServerInfo.Optional,
668			Errors: errs,
669			}
670			}
671
672			func (l *base) setErrs(errs []error) {
673			l.errs = errs
674			}
675
676			func (l *base) getErrs() []error {
677			return l.errs
678			}
679
680			const (
681			systemd = "systemd"
682			upstart = "upstart"
683			sysVinit = "init"
684			)
685
686			// https://unix.stackexchange.com/questions/196166/how-to-find-out-if-a-system-uses-sysv-upstart-or-systemd-initsystem
687			func (l *base) detectInitSystem() (string, error) {
688			var f func(string) (string, error)
689			f = func(cmd string) (string, error) {
690			r := l.exec(cmd, sudo)
691			if !r.isSuccess() {
692			return "", fmt.Errorf("Failed to stat %s: %s", cmd, r)
693			}
694			scanner := bufio.NewScanner(strings.NewReader(r.Stdout))
695			scanner.Scan()
696			line := strings.TrimSpace(scanner.Text())
697			if strings.Contains(line, "systemd") {
698			return systemd, nil
699			} else if strings.Contains(line, "upstart") {
700			return upstart, nil
701			} else if strings.Contains(line, "File: ‘/proc/1/exe’ -> ‘/sbin/init’") \|\|
702			strings.Contains(line, "File: `/proc/1/exe' -> `/sbin/init'") {
703			return f("stat /sbin/init")
704			} else if line == "File: ‘/sbin/init’" \|\|
705			line == "File: `/sbin/init'" {
706			r := l.exec("/sbin/init --version", noSudo)
707			if r.isSuccess() {
708			if strings.Contains(r.Stdout, "upstart") {
709			return upstart, nil
710			}
711			}
712			return sysVinit, nil
713			}
714			return "", fmt.Errorf("Failed to detect a init system: %s", line)
715			}
716			return f("stat /proc/1/exe")
717			}
718
719			func (l *base) detectServiceName(pid string) (string, error) {
720			cmd := fmt.Sprintf("systemctl status --quiet --no-pager %s", pid)
721			r := l.exec(cmd, noSudo)
722			if !r.isSuccess() {
723			return "", fmt.Errorf("Failed to stat %s: %s", cmd, r)
724			}
725			return l.parseSystemctlStatus(r.Stdout), nil
726			}
727
728			func (l *base) parseSystemctlStatus(stdout string) string {
729			scanner := bufio.NewScanner(strings.NewReader(stdout))
730			scanner.Scan()
731			line := scanner.Text()
732			ss := strings.Fields(line)
733			if len(ss) < 2 \|\| strings.HasPrefix(line, "Failed to get unit for PID") {
734			return ""
735			}
736			return ss[1]
737			}
738

future-architect / vuls

Pull Request — master (#769)

scan.*base.parseIP B

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