CVEs-PoC/2011/CVE-2011-0421.md

### [CVE-2011-0421](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0421)
![](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 _zip_name_locate function in zip_name_locate.c in the Zip extension in PHP before 5.3.6 does not properly handle a ZIPARCHIVE::FL_UNCHANGED argument, which might allow context-dependent attackers to cause a denial of service (NULL pointer dereference) via an empty ZIP archive that is processed with a (1) locateName or (2) statName operation.

### POC

#### Reference
- http://securityreason.com/securityalert/8146
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:052

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