cve/2013/CVE-2013-4788.md

### [CVE-2013-4788](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4788)
![](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 PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not initialize the random value for the pointer guard, which makes it easier for context-dependent attackers to control execution flow by leveraging a buffer-overflow vulnerability in an application and using the known zero value pointer guard to calculate a pointer address.

### POC

#### Reference
- http://hmarco.org/bugs/CVE-2013-4788.html
- http://seclists.org/fulldisclosure/2015/Sep/23
- http://www.openwall.com/lists/oss-security/2013/07/15/9

#### Github
- https://github.com/mudongliang/LinuxFlaw
- https://github.com/oneoy/cve-