cve/2013/CVE-2013-7423.md

### [CVE-2013-7423](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-7423)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The send_dg function in resolv/res_send.c in GNU C Library (aka glibc or libc6) before 2.20 does not properly reuse file descriptors, which allows remote attackers to send DNS queries to unintended locations via a large number of requests that trigger a call to the getaddrinfo function.

### POC

#### Reference
- http://packetstormsecurity.com/files/164014/Moxa-Command-Injection-Cross-Site-Scripting-Vulnerable-Software.html
- http://packetstormsecurity.com/files/164014/Moxa-Command-Injection-Cross-Site-Scripting-Vulnerable-Software.html
- http://seclists.org/fulldisclosure/2021/Sep/0
- http://seclists.org/fulldisclosure/2021/Sep/0

#### Github
No PoCs found on GitHub currently.