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

Completed

Pull Request — master (#769)

unknown

created 2019-01-30 10:38 UTC

scan.detectWpCore F

↳ Parent: scan/base.go

Complexity

Conditions

Size

Total Lines	37
Code Lines	25

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	14
eloc	25
dl	0
loc	37
rs	3.6
c	0
b	0
f	0
nop	1

How to fix Complexity

/* 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"
)

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
	}
	for _, i := range unsecures {
		l.VulnInfos[i.CveID] = i
	}

	return err
}

//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 -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 WpError
				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
}

type Errors struct {

	Error string `json:"error"`
}

type WpError struct {

	Error string `json:"error"`
}

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 WpError
				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) 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			)
34
35			type base struct {
36			ServerInfo config.ServerInfo
37			Distro config.Distro
38			Platform models.Platform
39			osPackages
40
41			log *logrus.Entry
42			errs []error
43			}
44
45			func (l *base) scanWp() (err error) {
46			if len(l.ServerInfo.WpPath) == 0 && len(l.ServerInfo.WpToken) == 0 {
47			return nil
48			}
49
50			var unsecures []models.VulnInfo
51			if unsecures, err = detectWp(l.ServerInfo); err != nil {
52			l.log.Errorf("Failed to scan wordpress: %s", err)
53			return err
54			}
55			for _, i := range unsecures {
56			l.VulnInfos[i.CveID] = i
57			}
58
59			return err
60			}
61
62			//WpCveInfos is for wpvulndb's json
63			type WpCveInfos struct {
64			ReleaseDate string `json:"release_date"`
65			ChangelogURL string `json:"changelog_url"`
66			Status string `json:"status"`
67			LatestVersion string `json:"latest_version"`
68			LastUpdated string `json:"last_updated"`
69			Popular bool `json:"popular"`
70			Vulnerabilities []WpCveInfo `json:"vulnerabilities"`
71			Error string `json:"error"`
72			}
73
74			//WpCveInfo is for wpvulndb's json
75			type WpCveInfo struct {
76			ID int `json:"id"`
77			Title string `json:"title"`
78			CreatedAt string `json:"created_at"`
79			UpdatedAt string `json:"updated_at"`
80			PublishedDate string `json:"Published_date"`
81			VulnType string `json:"Vuln_type"`
82			References References `json:"references"`
83			FixedIn string `json:"fixed_in"`
84			}
85
86			//References is for wpvulndb's json
87			type References struct {
88			URL []string `json:"url"`
89			Cve []string `json:"cve"`
90			Secunia []string `json:"secunia"`
91			}
92
93			func detectWp(c config.ServerInfo) (rs []models.VulnInfo, err error) {
94
95			var coreVuln []models.VulnInfo
96			if coreVuln, err = detectWpCore(c); err != nil {
97			return
98			}
99			for _, i := range coreVuln {
100			rs = append(rs, i)
101			}
102
103			var themeVuln []models.VulnInfo
104			if themeVuln, err = detectWpTheme(c); err != nil {
105			return
106			}
107			for _, i := range themeVuln {
108			rs = append(rs, i)
109			}
110
111			var pluginVuln []models.VulnInfo
112			if pluginVuln, err = detectWpPlugin(c); err != nil {
113			return
114			}
115			for _, i := range pluginVuln {
116			rs = append(rs, i)
117			}
118			return
119			}
120
121			func detectWpCore(c config.ServerInfo) (rs []models.VulnInfo, err error) {
122			cmd := fmt.Sprintf("wp core version --path=%s", c.WpPath)
123
124			var coreVersion string
125			if r := exec(c, cmd, noSudo); r.isSuccess() {
126			tmp := strings.Split(r.Stdout, ".")
127			coreVersion = strings.Join(tmp, "")
128			coreVersion = strings.TrimRight(coreVersion, "\r\n")
129			if len(coreVersion) == 0 {
130			return
131			}
132			}
133			cmd = fmt.Sprintf("curl -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/wordpresses/%s", c.WpToken, coreVersion)
134			if r := exec(c, cmd, noSudo); r.isSuccess() {
135			data := map[string]WpCveInfos{}
136			if err = json.Unmarshal([]byte(r.Stdout), &data); err != nil {
137			return
138			}
139			for _, i := range data {
140			if len(i.Vulnerabilities) == 0 {
141			continue
142			}
143			for _, e := range i.Vulnerabilities {
144			var cveIDs []string
145			for _, k := range e.References.Cve {
146			cveIDs = append(cveIDs, "CVE-"+k)
147			}
148
149			for _, cveID := range cveIDs {
150			rs = append(rs, models.VulnInfo{
151			CveID: cveID,
152			})
153			}
154			}
155			}
156			}
157			return
158			}
159
160			//WpStatus is for wp command
161			type WpStatus struct {
162			Name string `json:"-"`
163			Status string `json:"-"`
164			Update string `json:"-"`
165			Version string `json:"-"`
166			}
167
168			func detectWpTheme(c config.ServerInfo) (rs []models.VulnInfo, err error) {
169			cmd := fmt.Sprintf("wp theme list --path=%s", c.WpPath)
170
171			var themes []WpStatus
172			if r := exec(c, cmd, noSudo); r.isSuccess() {
173			themes = parseStatus(r.Stdout)
174			}
175
176			for _, theme := range themes {
177			cmd := fmt.Sprintf("curl -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/themes/%s", c.WpToken, theme.Name)
178			if r := exec(c, cmd, noSudo); r.isSuccess() {
179			data := map[string]WpCveInfos{}
180			if err = json.Unmarshal([]byte(r.Stdout), &data); err != nil {
181			var jsonError WpError
182			if err = json.Unmarshal([]byte(r.Stdout), &jsonError); err != nil {
183			return
184			}
185			continue
186			}
187			for _, i := range data {
188			if len(i.Vulnerabilities) == 0 {
189			continue
190			}
191			if len(i.Error) != 0 {
192			continue
193			}
194			for _, e := range i.Vulnerabilities {
195			v1, _ := version.NewVersion(theme.Version)
196			v2, _ := version.NewVersion(e.FixedIn)
197			if v1.LessThan(v2) {
198			if len(e.References.Cve) == 0 {
199			continue
200			}
201			var cveIDs []string
202			for _, k := range e.References.Cve {
203			cveIDs = append(cveIDs, "CVE-"+k)
204			}
205
206			for _, cveID := range cveIDs {
207			rs = append(rs, models.VulnInfo{
208			CveID: cveID,
209			})
210			}
211			}
212			}
213			}
214
215			}
216			}
217			return
218			}
219
220			type Errors struct {
			0 ignored issues – show introduced 2019-01-30 10:49 UTC by Report Bug Copy Issue Report exported type Errors should have comment or be unexported Loading history...
221			Error string `json:"error"`
222			}
223
224			type WpError struct {
			0 ignored issues – show introduced 2019-01-30 10:49 UTC by Report Bug Copy Issue Report exported type WpError should have comment or be unexported Loading history...
225			Error string `json:"error"`
226			}
227
228			func detectWpPlugin(c config.ServerInfo) (rs []models.VulnInfo, err error) {
229			cmd := fmt.Sprintf("wp plugin list --path=%s", c.WpPath)
230
231			var plugins []WpStatus
232			if r := exec(c, cmd, noSudo); r.isSuccess() {
233			plugins = parseStatus(r.Stdout)
234			}
235
236			for _, plugin := range plugins {
237			cmd := fmt.Sprintf("curl -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/plugins/%s", c.WpToken, plugin.Name)
238
239			if r := exec(c, cmd, noSudo); r.isSuccess() {
240			data := map[string]WpCveInfos{}
241			if err = json.Unmarshal([]byte(r.Stdout), &data); err != nil {
242			var jsonError WpError
243			if err = json.Unmarshal([]byte(r.Stdout), &jsonError); err != nil {
244			return
245			}
246			continue
247			}
248			for _, i := range data {
249			if len(i.Vulnerabilities) == 0 {
250			continue
251			}
252			if len(i.Error) != 0 {
253			continue
254			}
255			for _, e := range i.Vulnerabilities {
256			v1, _ := version.NewVersion(plugin.Version)
257			v2, _ := version.NewVersion(e.FixedIn)
258			if v1.LessThan(v2) {
259			if len(e.References.Cve) == 0 {
260			continue
261			}
262			var cveIDs []string
263			for _, k := range e.References.Cve {
264			cveIDs = append(cveIDs, "CVE-"+k)
265			}
266
267			for _, cveID := range cveIDs {
268			rs = append(rs, models.VulnInfo{
269			CveID: cveID,
270			})
271			}
272			}
273			}
274			}
275			}
276			}
277			return
278			}
279
280			func parseStatus(r string) (themes []WpStatus) {
281			tmp := strings.Split(r, "\r\n")
282			tmp = unset(tmp, 0)
283			tmp = unset(tmp, 0)
284			tmp = unset(tmp, 0)
285			tmp = unset(tmp, len(tmp)-1)
286			tmp = unset(tmp, len(tmp)-1)
287			for _, k := range tmp {
288			theme := strings.Split(k, "\|")
289			themes = append(themes, WpStatus{
290			Name: strings.TrimSpace(theme[1]),
291			Status: strings.TrimSpace(theme[2]),
292			Update: strings.TrimSpace(theme[3]),
293			Version: strings.TrimSpace(theme[4]),
294			})
295			}
296			return
297			}
298
299			func unset(s []string, i int) []string {
300			if i >= len(s) {
301			return s
302			}
303			return append(s[:i], s[i+1:]...)
304			}
305
306			func (l *base) exec(cmd string, sudo bool) execResult {
307			return exec(l.ServerInfo, cmd, sudo, l.log)
308			}
309
310			func (l *base) setServerInfo(c config.ServerInfo) {
311			l.ServerInfo = c
312			}
313
314			func (l *base) getServerInfo() config.ServerInfo {
315			return l.ServerInfo
316			}
317
318			func (l *base) setDistro(fam, rel string) {
319			d := config.Distro{
320			Family: fam,
321			Release: rel,
322			}
323			l.Distro = d
324
325			s := l.getServerInfo()
326			s.Distro = d
327			l.setServerInfo(s)
328			}
329
330			func (l *base) getDistro() config.Distro {
331			return l.Distro
332			}
333
334			func (l *base) setPlatform(p models.Platform) {
335			l.Platform = p
336			}
337
338			func (l *base) getPlatform() models.Platform {
339			return l.Platform
340			}
341
342			func (l *base) runningKernel() (release, version string, err error) {
343			r := l.exec("uname -r", noSudo)
344			if !r.isSuccess() {
345			return "", "", fmt.Errorf("Failed to SSH: %s", r)
346			}
347			release = strings.TrimSpace(r.Stdout)
348
349			switch l.Distro.Family {
350			case config.Debian:
351			r := l.exec("uname -a", noSudo)
352			if !r.isSuccess() {
353			return "", "", fmt.Errorf("Failed to SSH: %s", r)
354			}
355			ss := strings.Fields(r.Stdout)
356			if 6 < len(ss) {
357			version = ss[6]
358			}
359			}
360			return
361			}
362
363			func (l *base) allContainers() (containers []config.Container, err error) {
364			switch l.ServerInfo.ContainerType {
365			case "", "docker":
366			stdout, err := l.dockerPs("-a --format '{{.ID}} {{.Names}} {{.Image}}'")
367			if err != nil {
368			return containers, err
369			}
370			return l.parseDockerPs(stdout)
371			case "lxd":
372			stdout, err := l.lxdPs("-c n")
373			if err != nil {
374			return containers, err
375			}
376			return l.parseLxdPs(stdout)
377			case "lxc":
378			stdout, err := l.lxcPs("-1")
379			if err != nil {
380			return containers, err
381			}
382			return l.parseLxcPs(stdout)
383			default:
384			return containers, fmt.Errorf(
385			"Not supported yet: %s", l.ServerInfo.ContainerType)
386			}
387			}
388
389			func (l *base) runningContainers() (containers []config.Container, err error) {
390			switch l.ServerInfo.ContainerType {
391			case "", "docker":
392			stdout, err := l.dockerPs("--format '{{.ID}} {{.Names}} {{.Image}}'")
393			if err != nil {
394			return containers, err
395			}
396			return l.parseDockerPs(stdout)
397			case "lxd":
398			stdout, err := l.lxdPs("volatile.last_state.power=RUNNING -c n")
399			if err != nil {
400			return containers, err
401			}
402			return l.parseLxdPs(stdout)
403			case "lxc":
404			stdout, err := l.lxcPs("-1 --running")
405			if err != nil {
406			return containers, err
407			}
408			return l.parseLxcPs(stdout)
409			default:
410			return containers, fmt.Errorf(
411			"Not supported yet: %s", l.ServerInfo.ContainerType)
412			}
413			}
414
415			func (l *base) exitedContainers() (containers []config.Container, err error) {
416			switch l.ServerInfo.ContainerType {
417			case "", "docker":
418			stdout, err := l.dockerPs("--filter 'status=exited' --format '{{.ID}} {{.Names}} {{.Image}}'")
419			if err != nil {
420			return containers, err
421			}
422			return l.parseDockerPs(stdout)
423			case "lxd":
424			stdout, err := l.lxdPs("volatile.last_state.power=STOPPED -c n")
425			if err != nil {
426			return containers, err
427			}
428			return l.parseLxdPs(stdout)
429			case "lxc":
430			stdout, err := l.lxcPs("-1 --stopped")
431			if err != nil {
432			return containers, err
433			}
434			return l.parseLxcPs(stdout)
435			default:
436			return containers, fmt.Errorf(
437			"Not supported yet: %s", l.ServerInfo.ContainerType)
438			}
439			}
440
441			func (l *base) dockerPs(option string) (string, error) {
442			cmd := fmt.Sprintf("docker ps %s", option)
443			r := l.exec(cmd, noSudo)
444			if !r.isSuccess() {
445			return "", fmt.Errorf("Failed to SSH: %s", r)
446			}
447			return r.Stdout, nil
448			}
449
450			func (l *base) lxdPs(option string) (string, error) {
451			cmd := fmt.Sprintf("lxc list %s", option)
452			r := l.exec(cmd, noSudo)
453			if !r.isSuccess() {
454			return "", fmt.Errorf("failed to SSH: %s", r)
455			}
456			return r.Stdout, nil
457			}
458
459			func (l *base) lxcPs(option string) (string, error) {
460			cmd := fmt.Sprintf("lxc-ls %s 2>/dev/null", option)
461			r := l.exec(cmd, sudo)
462			if !r.isSuccess() {
463			return "", fmt.Errorf("failed to SSH: %s", r)
464			}
465			return r.Stdout, nil
466			}
467
468			func (l *base) parseDockerPs(stdout string) (containers []config.Container, err error) {
469			lines := strings.Split(stdout, "\n")
470			for _, line := range lines {
471			fields := strings.Fields(line)
472			if len(fields) == 0 {
473			break
474			}
475			if len(fields) != 3 {
476			return containers, fmt.Errorf("Unknown format: %s", line)
477			}
478			containers = append(containers, config.Container{
479			ContainerID: fields[0],
480			Name: fields[1],
481			Image: fields[2],
482			})
483			}
484			return
485			}
486
487			func (l *base) parseLxdPs(stdout string) (containers []config.Container, err error) {
488			lines := strings.Split(stdout, "\n")
489			for i, line := range lines[3:] {
490			if i%2 == 1 {
491			continue
492			}
493			fields := strings.Fields(strings.Replace(line, "\|", " ", -1))
494			if len(fields) == 0 {
495			break
496			}
497			if len(fields) != 1 {
498			return containers, fmt.Errorf("Unknown format: %s", line)
499			}
500			containers = append(containers, config.Container{
501			ContainerID: fields[0],
502			Name: fields[0],
503			})
504			}
505			return
506			}
507
508			func (l *base) parseLxcPs(stdout string) (containers []config.Container, err error) {
509			lines := strings.Split(stdout, "\n")
510			for _, line := range lines {
511			fields := strings.Fields(line)
512			if len(fields) == 0 {
513			break
514			}
515			containers = append(containers, config.Container{
516			ContainerID: fields[0],
517			Name: fields[0],
518			})
519			}
520			return
521			}
522
523			// ip executes ip command and returns IP addresses
524			func (l *base) ip() ([]string, []string, error) {
525			// e.g.
526			// 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
527			// 2: eth0 inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0
528			// 2: eth0 inet6 fe80::5054:ff:fe2a:864c/64 scope link \ valid_lft forever preferred_lft forever
529			r := l.exec("/sbin/ip -o addr", noSudo)
530			if !r.isSuccess() {
531			return nil, nil, fmt.Errorf("Failed to detect IP address: %v", r)
532			}
533			ipv4Addrs, ipv6Addrs := l.parseIP(r.Stdout)
534			return ipv4Addrs, ipv6Addrs, nil
535			}
536
537			// parseIP parses the results of ip command
538			func (l *base) parseIP(stdout string) (ipv4Addrs []string, ipv6Addrs []string) {
539			lines := strings.Split(stdout, "\n")
540			for _, line := range lines {
541			fields := strings.Fields(line)
542			if len(fields) < 4 {
543			continue
544			}
545			ip, _, err := net.ParseCIDR(fields[3])
546			if err != nil {
547			continue
548			}
549			if !ip.IsGlobalUnicast() {
550			continue
551			}
552			if ipv4 := ip.To4(); ipv4 != nil {
553			ipv4Addrs = append(ipv4Addrs, ipv4.String())
554			} else {
555			ipv6Addrs = append(ipv6Addrs, ip.String())
556			}
557			}
558			return
559			}
560
561			func (l *base) detectPlatform() {
562			if l.getServerInfo().Mode.IsOffline() {
563			l.setPlatform(models.Platform{Name: "unknown"})
564			return
565			}
566			ok, instanceID, err := l.detectRunningOnAws()
567			if err != nil {
568			l.setPlatform(models.Platform{Name: "other"})
569			return
570			}
571			if ok {
572			l.setPlatform(models.Platform{
573			Name: "aws",
574			InstanceID: instanceID,
575			})
576			return
577			}
578
579			//TODO Azure, GCP...
580			l.setPlatform(models.Platform{Name: "other"})
581			return
582			}
583
584			func (l *base) detectRunningOnAws() (ok bool, instanceID string, err error) {
585			if r := l.exec("type curl", noSudo); r.isSuccess() {
586			cmd := "curl --max-time 1 --noproxy 169.254.169.254 http://169.254.169.254/latest/meta-data/instance-id"
587			r := l.exec(cmd, noSudo)
588			if r.isSuccess() {
589			id := strings.TrimSpace(r.Stdout)
590			if !l.isAwsInstanceID(id) {
591			return false, "", nil
592			}
593			return true, id, nil
594			}
595
596			switch r.ExitStatus {
597			case 28, 7:
598			// Not running on AWS
599			// 7 Failed to connect to host.
600			// 28 operation timeout.
601			return false, "", nil
602			}
603			}
604
605			if r := l.exec("type wget", noSudo); r.isSuccess() {
606			cmd := "wget --tries=3 --timeout=1 --no-proxy -q -O - http://169.254.169.254/latest/meta-data/instance-id"
607			r := l.exec(cmd, noSudo)
608			if r.isSuccess() {
609			id := strings.TrimSpace(r.Stdout)
610			if !l.isAwsInstanceID(id) {
611			return false, "", nil
612			}
613			return true, id, nil
614			}
615
616			switch r.ExitStatus {
617			case 4, 8:
618			// Not running on AWS
619			// 4 Network failure
620			// 8 Server issued an error response.
621			return false, "", nil
622			}
623			}
624			return false, "", fmt.Errorf(
625			"Failed to curl or wget to AWS instance metadata on %s. container: %s",
626			l.ServerInfo.ServerName, l.ServerInfo.Container.Name)
627			}
628
629			// http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/resource-ids.html
630			var awsInstanceIDPattern = regexp.MustCompile(`^i-[0-9a-f]+$`)
631
632			func (l *base) isAwsInstanceID(str string) bool {
633			return awsInstanceIDPattern.MatchString(str)
634			}
635
636			func (l *base) convertToModel() models.ScanResult {
637			ctype := l.ServerInfo.ContainerType
638			if l.ServerInfo.Container.ContainerID != "" && ctype == "" {
639			ctype = "docker"
640			}
641			container := models.Container{
642			ContainerID: l.ServerInfo.Container.ContainerID,
643			Name: l.ServerInfo.Container.Name,
644			Image: l.ServerInfo.Container.Image,
645			Type: ctype,
646			}
647
648			errs := []string{}
649			for _, e := range l.errs {
650			errs = append(errs, fmt.Sprintf("%s", e))
651			}
652
653			return models.ScanResult{
654			JSONVersion: models.JSONVersion,
655			ServerName: l.ServerInfo.ServerName,
656			ScannedAt: time.Now(),
657			ScanMode: l.ServerInfo.Mode.String(),
658			Family: l.Distro.Family,
659			Release: l.Distro.Release,
660			Container: container,
661			Platform: l.Platform,
662			IPv4Addrs: l.ServerInfo.IPv4Addrs,
663			IPv6Addrs: l.ServerInfo.IPv6Addrs,
664			ScannedCves: l.VulnInfos,
665			RunningKernel: l.Kernel,
666			Packages: l.Packages,
667			SrcPackages: l.SrcPackages,
668			Optional: l.ServerInfo.Optional,
669			Errors: errs,
670			}
671			}
672
673			func (l *base) setErrs(errs []error) {
674			l.errs = errs
675			}
676
677			func (l *base) getErrs() []error {
678			return l.errs
679			}
680
681			const (
682			systemd = "systemd"
683			upstart = "upstart"
684			sysVinit = "init"
685			)
686
687			// https://unix.stackexchange.com/questions/196166/how-to-find-out-if-a-system-uses-sysv-upstart-or-systemd-initsystem
688			func (l *base) detectInitSystem() (string, error) {
689			var f func(string) (string, error)
690			f = func(cmd string) (string, error) {
691			r := l.exec(cmd, sudo)
692			if !r.isSuccess() {
693			return "", fmt.Errorf("Failed to stat %s: %s", cmd, r)
694			}
695			scanner := bufio.NewScanner(strings.NewReader(r.Stdout))
696			scanner.Scan()
697			line := strings.TrimSpace(scanner.Text())
698			if strings.Contains(line, "systemd") {
699			return systemd, nil
700			} else if strings.Contains(line, "upstart") {
701			return upstart, nil
702			} else if strings.Contains(line, "File: ‘/proc/1/exe’ -> ‘/sbin/init’") \|\|
703			strings.Contains(line, "File: `/proc/1/exe' -> `/sbin/init'") {
704			return f("stat /sbin/init")
705			} else if line == "File: ‘/sbin/init’" \|\|
706			line == "File: `/sbin/init'" {
707			r := l.exec("/sbin/init --version", noSudo)
708			if r.isSuccess() {
709			if strings.Contains(r.Stdout, "upstart") {
710			return upstart, nil
711			}
712			}
713			return sysVinit, nil
714			}
715			return "", fmt.Errorf("Failed to detect a init system: %s", line)
716			}
717			return f("stat /proc/1/exe")
718			}
719
720			func (l *base) detectServiceName(pid string) (string, error) {
721			cmd := fmt.Sprintf("systemctl status --quiet --no-pager %s", pid)
722			r := l.exec(cmd, noSudo)
723			if !r.isSuccess() {
724			return "", fmt.Errorf("Failed to stat %s: %s", cmd, r)
725			}
726			return l.parseSystemctlStatus(r.Stdout), nil
727			}
728
729			func (l *base) parseSystemctlStatus(stdout string) string {
730			scanner := bufio.NewScanner(strings.NewReader(stdout))
731			scanner.Scan()
732			line := scanner.Text()
733			ss := strings.Fields(line)
734			if len(ss) < 2 \|\| strings.HasPrefix(line, "Failed to get unit for PID") {
735			return ""
736			}
737			return ss[1]
738			}
739

future-architect / vuls

Pull Request — master (#769)

scan.detectWpCore F

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