scan.detectWpTheme - 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 2019-01-28 13:36 UTC

scan.detectWpTheme A

↳ Parent: scan/base.go

Complexity

Conditions

Size

Total Lines	14
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	5
eloc	9
dl	0
loc	14
rs	9.3333
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/k0kubun/pp"
	"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
}

//CveInfos hoge
type CveInfos struct {
	ReleaseDate     string    `json:"release_date"`
	ChangelogURL    string    `json:"changelog_url"`
	Status          string    `json:"status"`
	Vulnerabilities []CveInfo `json:"vulnerabilities"`
}

//CveInfo hoge
type CveInfo 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 hoge
type References struct {
	URL []string `json:"url"`
	Cve []string `json:"cve"`
}

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]CveInfos{}
		if err = json.Unmarshal([]byte(r.Stdout), &data); err != nil {
			return
		}
		for _, i := range data {
			for _, e := range i.Vulnerabilities {
				var cve string
				for _, k := range e.References.Cve {
					cve = "CVE-" + k
				}

				rs = append(rs, models.VulnInfo{
					CveID: cve,
				})
			}
		}
	}
	return
}

//WpStatus is hogehoge...
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 _, i := range themes {
		cmd := fmt.Sprintf("curl -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/themes/%s", c.WpToken, i.Name)
		if r := exec(c, cmd, noSudo); r.isSuccess() {
		}
	}
	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 _, i := range plugins {
		cmd := fmt.Sprintf("curl -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/plugins/%s", c.WpToken, i.Name)
		pp.Println(cmd)
		if r := exec(c, cmd, noSudo); r.isSuccess() {
			pp.Println(r.Stdout)
		}
	}
	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/k0kubun/pp"
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			//CveInfos hoge
63			type CveInfos struct {
64			ReleaseDate string `json:"release_date"`
65			ChangelogURL string `json:"changelog_url"`
66			Status string `json:"status"`
67			Vulnerabilities []CveInfo `json:"vulnerabilities"`
68			}
69
70			//CveInfo hoge
71			type CveInfo struct {
72			ID int `json:"id"`
73			Title string `json:"title"`
74			CreatedAt string `json:"created_at"`
75			UpdatedAt string `json:"updated_at"`
76			PublishedDate string `json:"Published_date"`
77			VulnType string `json:"Vuln_type"`
78			References References `json:"references"`
79			FixedIn string `json:"fixed_in"`
80			}
81
82			//References hoge
83			type References struct {
84			URL []string `json:"url"`
85			Cve []string `json:"cve"`
86			}
87
88			func detectWp(c config.ServerInfo) (rs []models.VulnInfo, err error) {
89
90			var coreVuln []models.VulnInfo
91			if coreVuln, err = detectWpCore(c); err != nil {
92			return
93			}
94			for _, i := range coreVuln {
95			rs = append(rs, i)
96			}
97
98			var themeVuln []models.VulnInfo
99			if themeVuln, err = detectWpTheme(c); err != nil {
100			return
101			}
102			for _, i := range themeVuln {
103			rs = append(rs, i)
104			}
105
106			var pluginVuln []models.VulnInfo
107			if pluginVuln, err = detectWpPlugin(c); err != nil {
108			return
109			}
110			for _, i := range pluginVuln {
111			rs = append(rs, i)
112			}
113			return
114			}
115
116			func detectWpCore(c config.ServerInfo) (rs []models.VulnInfo, err error) {
117			cmd := fmt.Sprintf("wp core version --path=%s", c.WpPath)
118
119			var coreVersion string
120			if r := exec(c, cmd, noSudo); r.isSuccess() {
121			tmp := strings.Split(r.Stdout, ".")
122			coreVersion = strings.Join(tmp, "")
123			coreVersion = strings.TrimRight(coreVersion, "\r\n")
124			if len(coreVersion) == 0 {
125			return
126			}
127			}
128			cmd = fmt.Sprintf("curl -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/wordpresses/%s", c.WpToken, coreVersion)
129			if r := exec(c, cmd, noSudo); r.isSuccess() {
130			data := map[string]CveInfos{}
131			if err = json.Unmarshal([]byte(r.Stdout), &data); err != nil {
132			return
133			}
134			for _, i := range data {
135			for _, e := range i.Vulnerabilities {
136			var cve string
137			for _, k := range e.References.Cve {
138			cve = "CVE-" + k
139			}
140
141			rs = append(rs, models.VulnInfo{
142			CveID: cve,
143			})
144			}
145			}
146			}
147			return
148			}
149
150			//WpStatus is hogehoge...
151			type WpStatus struct {
152			Name string `json:"-"`
153			Status string `json:"-"`
154			Update string `json:"-"`
155			Version string `json:"-"`
156			}
157
158			func detectWpTheme(c config.ServerInfo) (rs []models.VulnInfo, err error) {
159			cmd := fmt.Sprintf("wp theme list --path=%s", c.WpPath)
160
161			var themes []WpStatus
162			if r := exec(c, cmd, noSudo); r.isSuccess() {
163			themes = parseStatus(r.Stdout)
164			}
165
166			for _, i := range themes {
167			cmd := fmt.Sprintf("curl -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/themes/%s", c.WpToken, i.Name)
168			if r := exec(c, cmd, noSudo); r.isSuccess() {
169			}
170			}
171			return
172			}
173
174			func detectWpPlugin(c config.ServerInfo) (rs []models.VulnInfo, err error) {
175			cmd := fmt.Sprintf("wp plugin list --path=%s", c.WpPath)
176
177			var plugins []WpStatus
178			if r := exec(c, cmd, noSudo); r.isSuccess() {
179			plugins = parseStatus(r.Stdout)
180			}
181
182			for _, i := range plugins {
183			cmd := fmt.Sprintf("curl -H 'Authorization: Token token=%s' https://wpvulndb.com/api/v3/plugins/%s", c.WpToken, i.Name)
184			pp.Println(cmd)
185			if r := exec(c, cmd, noSudo); r.isSuccess() {
186			pp.Println(r.Stdout)
187			}
188			}
189			return
190			}
191
192			func parseStatus(r string) (themes []WpStatus) {
193			tmp := strings.Split(r, "\r\n")
194			tmp = unset(tmp, 0)
195			tmp = unset(tmp, 0)
196			tmp = unset(tmp, 0)
197			tmp = unset(tmp, len(tmp)-1)
198			tmp = unset(tmp, len(tmp)-1)
199			for _, k := range tmp {
200			theme := strings.Split(k, "\|")
201			themes = append(themes, WpStatus{
202			Name: strings.TrimSpace(theme[1]),
203			Status: strings.TrimSpace(theme[2]),
204			Update: strings.TrimSpace(theme[3]),
205			Version: strings.TrimSpace(theme[4]),
206			})
207			}
208			return
209			}
210
211			func unset(s []string, i int) []string {
212			if i >= len(s) {
213			return s
214			}
215			return append(s[:i], s[i+1:]...)
216			}
217
218			func (l *base) exec(cmd string, sudo bool) execResult {
219			return exec(l.ServerInfo, cmd, sudo, l.log)
220			}
221
222			func (l *base) setServerInfo(c config.ServerInfo) {
223			l.ServerInfo = c
224			}
225
226			func (l *base) getServerInfo() config.ServerInfo {
227			return l.ServerInfo
228			}
229
230			func (l *base) setDistro(fam, rel string) {
231			d := config.Distro{
232			Family: fam,
233			Release: rel,
234			}
235			l.Distro = d
236
237			s := l.getServerInfo()
238			s.Distro = d
239			l.setServerInfo(s)
240			}
241
242			func (l *base) getDistro() config.Distro {
243			return l.Distro
244			}
245
246			func (l *base) setPlatform(p models.Platform) {
247			l.Platform = p
248			}
249
250			func (l *base) getPlatform() models.Platform {
251			return l.Platform
252			}
253
254			func (l *base) runningKernel() (release, version string, err error) {
255			r := l.exec("uname -r", noSudo)
256			if !r.isSuccess() {
257			return "", "", fmt.Errorf("Failed to SSH: %s", r)
258			}
259			release = strings.TrimSpace(r.Stdout)
260
261			switch l.Distro.Family {
262			case config.Debian:
263			r := l.exec("uname -a", noSudo)
264			if !r.isSuccess() {
265			return "", "", fmt.Errorf("Failed to SSH: %s", r)
266			}
267			ss := strings.Fields(r.Stdout)
268			if 6 < len(ss) {
269			version = ss[6]
270			}
271			}
272			return
273			}
274
275			func (l *base) allContainers() (containers []config.Container, err error) {
276			switch l.ServerInfo.ContainerType {
277			case "", "docker":
278			stdout, err := l.dockerPs("-a --format '{{.ID}} {{.Names}} {{.Image}}'")
279			if err != nil {
280			return containers, err
281			}
282			return l.parseDockerPs(stdout)
283			case "lxd":
284			stdout, err := l.lxdPs("-c n")
285			if err != nil {
286			return containers, err
287			}
288			return l.parseLxdPs(stdout)
289			case "lxc":
290			stdout, err := l.lxcPs("-1")
291			if err != nil {
292			return containers, err
293			}
294			return l.parseLxcPs(stdout)
295			default:
296			return containers, fmt.Errorf(
297			"Not supported yet: %s", l.ServerInfo.ContainerType)
298			}
299			}
300
301			func (l *base) runningContainers() (containers []config.Container, err error) {
302			switch l.ServerInfo.ContainerType {
303			case "", "docker":
304			stdout, err := l.dockerPs("--format '{{.ID}} {{.Names}} {{.Image}}'")
305			if err != nil {
306			return containers, err
307			}
308			return l.parseDockerPs(stdout)
309			case "lxd":
310			stdout, err := l.lxdPs("volatile.last_state.power=RUNNING -c n")
311			if err != nil {
312			return containers, err
313			}
314			return l.parseLxdPs(stdout)
315			case "lxc":
316			stdout, err := l.lxcPs("-1 --running")
317			if err != nil {
318			return containers, err
319			}
320			return l.parseLxcPs(stdout)
321			default:
322			return containers, fmt.Errorf(
323			"Not supported yet: %s", l.ServerInfo.ContainerType)
324			}
325			}
326
327			func (l *base) exitedContainers() (containers []config.Container, err error) {
328			switch l.ServerInfo.ContainerType {
329			case "", "docker":
330			stdout, err := l.dockerPs("--filter 'status=exited' --format '{{.ID}} {{.Names}} {{.Image}}'")
331			if err != nil {
332			return containers, err
333			}
334			return l.parseDockerPs(stdout)
335			case "lxd":
336			stdout, err := l.lxdPs("volatile.last_state.power=STOPPED -c n")
337			if err != nil {
338			return containers, err
339			}
340			return l.parseLxdPs(stdout)
341			case "lxc":
342			stdout, err := l.lxcPs("-1 --stopped")
343			if err != nil {
344			return containers, err
345			}
346			return l.parseLxcPs(stdout)
347			default:
348			return containers, fmt.Errorf(
349			"Not supported yet: %s", l.ServerInfo.ContainerType)
350			}
351			}
352
353			func (l *base) dockerPs(option string) (string, error) {
354			cmd := fmt.Sprintf("docker ps %s", option)
355			r := l.exec(cmd, noSudo)
356			if !r.isSuccess() {
357			return "", fmt.Errorf("Failed to SSH: %s", r)
358			}
359			return r.Stdout, nil
360			}
361
362			func (l *base) lxdPs(option string) (string, error) {
363			cmd := fmt.Sprintf("lxc list %s", option)
364			r := l.exec(cmd, noSudo)
365			if !r.isSuccess() {
366			return "", fmt.Errorf("failed to SSH: %s", r)
367			}
368			return r.Stdout, nil
369			}
370
371			func (l *base) lxcPs(option string) (string, error) {
372			cmd := fmt.Sprintf("lxc-ls %s 2>/dev/null", option)
373			r := l.exec(cmd, sudo)
374			if !r.isSuccess() {
375			return "", fmt.Errorf("failed to SSH: %s", r)
376			}
377			return r.Stdout, nil
378			}
379
380			func (l *base) parseDockerPs(stdout string) (containers []config.Container, err error) {
381			lines := strings.Split(stdout, "\n")
382			for _, line := range lines {
383			fields := strings.Fields(line)
384			if len(fields) == 0 {
385			break
386			}
387			if len(fields) != 3 {
388			return containers, fmt.Errorf("Unknown format: %s", line)
389			}
390			containers = append(containers, config.Container{
391			ContainerID: fields[0],
392			Name: fields[1],
393			Image: fields[2],
394			})
395			}
396			return
397			}
398
399			func (l *base) parseLxdPs(stdout string) (containers []config.Container, err error) {
400			lines := strings.Split(stdout, "\n")
401			for i, line := range lines[3:] {
402			if i%2 == 1 {
403			continue
404			}
405			fields := strings.Fields(strings.Replace(line, "\|", " ", -1))
406			if len(fields) == 0 {
407			break
408			}
409			if len(fields) != 1 {
410			return containers, fmt.Errorf("Unknown format: %s", line)
411			}
412			containers = append(containers, config.Container{
413			ContainerID: fields[0],
414			Name: fields[0],
415			})
416			}
417			return
418			}
419
420			func (l *base) parseLxcPs(stdout string) (containers []config.Container, err error) {
421			lines := strings.Split(stdout, "\n")
422			for _, line := range lines {
423			fields := strings.Fields(line)
424			if len(fields) == 0 {
425			break
426			}
427			containers = append(containers, config.Container{
428			ContainerID: fields[0],
429			Name: fields[0],
430			})
431			}
432			return
433			}
434
435			// ip executes ip command and returns IP addresses
436			func (l *base) ip() ([]string, []string, error) {
437			// e.g.
438			// 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
439			// 2: eth0 inet 10.0.2.15/24 brd 10.0.2.255 scope global eth0
440			// 2: eth0 inet6 fe80::5054:ff:fe2a:864c/64 scope link \ valid_lft forever preferred_lft forever
441			r := l.exec("/sbin/ip -o addr", noSudo)
442			if !r.isSuccess() {
443			return nil, nil, fmt.Errorf("Failed to detect IP address: %v", r)
444			}
445			ipv4Addrs, ipv6Addrs := l.parseIP(r.Stdout)
446			return ipv4Addrs, ipv6Addrs, nil
447			}
448
449			// parseIP parses the results of ip command
450			func (l *base) parseIP(stdout string) (ipv4Addrs []string, ipv6Addrs []string) {
451			lines := strings.Split(stdout, "\n")
452			for _, line := range lines {
453			fields := strings.Fields(line)
454			if len(fields) < 4 {
455			continue
456			}
457			ip, _, err := net.ParseCIDR(fields[3])
458			if err != nil {
459			continue
460			}
461			if !ip.IsGlobalUnicast() {
462			continue
463			}
464			if ipv4 := ip.To4(); ipv4 != nil {
465			ipv4Addrs = append(ipv4Addrs, ipv4.String())
466			} else {
467			ipv6Addrs = append(ipv6Addrs, ip.String())
468			}
469			}
470			return
471			}
472
473			func (l *base) detectPlatform() {
474			if l.getServerInfo().Mode.IsOffline() {
475			l.setPlatform(models.Platform{Name: "unknown"})
476			return
477			}
478			ok, instanceID, err := l.detectRunningOnAws()
479			if err != nil {
480			l.setPlatform(models.Platform{Name: "other"})
481			return
482			}
483			if ok {
484			l.setPlatform(models.Platform{
485			Name: "aws",
486			InstanceID: instanceID,
487			})
488			return
489			}
490
491			//TODO Azure, GCP...
492			l.setPlatform(models.Platform{Name: "other"})
493			return
494			}
495
496			func (l *base) detectRunningOnAws() (ok bool, instanceID string, err error) {
497			if r := l.exec("type curl", noSudo); r.isSuccess() {
498			cmd := "curl --max-time 1 --noproxy 169.254.169.254 http://169.254.169.254/latest/meta-data/instance-id"
499			r := l.exec(cmd, noSudo)
500			if r.isSuccess() {
501			id := strings.TrimSpace(r.Stdout)
502			if !l.isAwsInstanceID(id) {
503			return false, "", nil
504			}
505			return true, id, nil
506			}
507
508			switch r.ExitStatus {
509			case 28, 7:
510			// Not running on AWS
511			// 7 Failed to connect to host.
512			// 28 operation timeout.
513			return false, "", nil
514			}
515			}
516
517			if r := l.exec("type wget", noSudo); r.isSuccess() {
518			cmd := "wget --tries=3 --timeout=1 --no-proxy -q -O - http://169.254.169.254/latest/meta-data/instance-id"
519			r := l.exec(cmd, noSudo)
520			if r.isSuccess() {
521			id := strings.TrimSpace(r.Stdout)
522			if !l.isAwsInstanceID(id) {
523			return false, "", nil
524			}
525			return true, id, nil
526			}
527
528			switch r.ExitStatus {
529			case 4, 8:
530			// Not running on AWS
531			// 4 Network failure
532			// 8 Server issued an error response.
533			return false, "", nil
534			}
535			}
536			return false, "", fmt.Errorf(
537			"Failed to curl or wget to AWS instance metadata on %s. container: %s",
538			l.ServerInfo.ServerName, l.ServerInfo.Container.Name)
539			}
540
541			// http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/resource-ids.html
542			var awsInstanceIDPattern = regexp.MustCompile(`^i-[0-9a-f]+$`)
543
544			func (l *base) isAwsInstanceID(str string) bool {
545			return awsInstanceIDPattern.MatchString(str)
546			}
547
548			func (l *base) convertToModel() models.ScanResult {
549			ctype := l.ServerInfo.ContainerType
550			if l.ServerInfo.Container.ContainerID != "" && ctype == "" {
551			ctype = "docker"
552			}
553			container := models.Container{
554			ContainerID: l.ServerInfo.Container.ContainerID,
555			Name: l.ServerInfo.Container.Name,
556			Image: l.ServerInfo.Container.Image,
557			Type: ctype,
558			}
559
560			errs := []string{}
561			for _, e := range l.errs {
562			errs = append(errs, fmt.Sprintf("%s", e))
563			}
564
565			return models.ScanResult{
566			JSONVersion: models.JSONVersion,
567			ServerName: l.ServerInfo.ServerName,
568			ScannedAt: time.Now(),
569			ScanMode: l.ServerInfo.Mode.String(),
570			Family: l.Distro.Family,
571			Release: l.Distro.Release,
572			Container: container,
573			Platform: l.Platform,
574			IPv4Addrs: l.ServerInfo.IPv4Addrs,
575			IPv6Addrs: l.ServerInfo.IPv6Addrs,
576			ScannedCves: l.VulnInfos,
577			RunningKernel: l.Kernel,
578			Packages: l.Packages,
579			SrcPackages: l.SrcPackages,
580			Optional: l.ServerInfo.Optional,
581			Errors: errs,
582			}
583			}
584
585			func (l *base) setErrs(errs []error) {
586			l.errs = errs
587			}
588
589			func (l *base) getErrs() []error {
590			return l.errs
591			}
592
593			const (
594			systemd = "systemd"
595			upstart = "upstart"
596			sysVinit = "init"
597			)
598
599			// https://unix.stackexchange.com/questions/196166/how-to-find-out-if-a-system-uses-sysv-upstart-or-systemd-initsystem
600			func (l *base) detectInitSystem() (string, error) {
601			var f func(string) (string, error)
602			f = func(cmd string) (string, error) {
603			r := l.exec(cmd, sudo)
604			if !r.isSuccess() {
605			return "", fmt.Errorf("Failed to stat %s: %s", cmd, r)
606			}
607			scanner := bufio.NewScanner(strings.NewReader(r.Stdout))
608			scanner.Scan()
609			line := strings.TrimSpace(scanner.Text())
610			if strings.Contains(line, "systemd") {
611			return systemd, nil
612			} else if strings.Contains(line, "upstart") {
613			return upstart, nil
614			} else if strings.Contains(line, "File: ‘/proc/1/exe’ -> ‘/sbin/init’") \|\|
615			strings.Contains(line, "File: `/proc/1/exe' -> `/sbin/init'") {
616			return f("stat /sbin/init")
617			} else if line == "File: ‘/sbin/init’" \|\|
618			line == "File: `/sbin/init'" {
619			r := l.exec("/sbin/init --version", noSudo)
620			if r.isSuccess() {
621			if strings.Contains(r.Stdout, "upstart") {
622			return upstart, nil
623			}
624			}
625			return sysVinit, nil
626			}
627			return "", fmt.Errorf("Failed to detect a init system: %s", line)
628			}
629			return f("stat /proc/1/exe")
630			}
631
632			func (l *base) detectServiceName(pid string) (string, error) {
633			cmd := fmt.Sprintf("systemctl status --quiet --no-pager %s", pid)
634			r := l.exec(cmd, noSudo)
635			if !r.isSuccess() {
636			return "", fmt.Errorf("Failed to stat %s: %s", cmd, r)
637			}
638			return l.parseSystemctlStatus(r.Stdout), nil
639			}
640
641			func (l *base) parseSystemctlStatus(stdout string) string {
642			scanner := bufio.NewScanner(strings.NewReader(stdout))
643			scanner.Scan()
644			line := scanner.Text()
645			ss := strings.Fields(line)
646			if len(ss) < 2 \|\| strings.HasPrefix(line, "Failed to get unit for PID") {
647			return ""
648			}
649			return ss[1]
650			}
651

future-architect / vuls

Pull Request — master (#769)

scan.detectWpTheme A

Complexity

Size

Duplication

Importance

Duplication Side-by-Side

Filter issues like