Description
The extract function in PHP before 5.2.15 does not prevent use of the EXTR_OVERWRITE parameter to overwrite (1) the GLOBALS superglobal array and (2) the this variable, which allows context-dependent attackers to bypass intended access restrictions by modifying data structures that were not intended to depend on external input, a related issue to CVE-2005-2691 and CVE-2006-3758.
References
- HPSBOV02763 vendor-advisory
- php-extract-security-bypass(65432) vdb-entry
- oval:org.mitre.oval:def:12016 vdb-entry signature
- http://www.php.net/ChangeLog-5.php
- http://www.php.net/archive/2010.php#id2010-12-10-1
- http://www.php.net/releases/5_2_15.php
- [oss-security] 20101213 Re: Issues without CVE names in PHP 5.3.4/5.2.15 release mailing-list