Double free vulnerability in the authentication and authentication token alteration code in PAM-MySQL 0.6.x before 0.6.2 and 0.7.x before 0.7pre3 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via crafted passwords, which lead to a double free of a pointer that was created by the pam_get_item function. NOTE: this issue only occurs in certain configurations in which there are multiple PAM modules, PAM-MySQL is not evaluated first, and there are no requisite modules before PAM-MySQL.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.securityfocus.com/bid/16564 | patch vdb entry |
| http://www.kb.cert.org/vuls/id/693909 | patch third party advisory us government resource |
| http://www.osvdb.org/22994 | vdb entry |
| http://jvn.jp/cert/JVNVU%23693909/index.html | |
| http://securitytracker.com/id?1015603 | patch vdb entry |
| http://www.vupen.com/english/advisories/2006/0490 | vdb entry |
| http://www.osvdb.org/22995 | vdb entry |
| http://secunia.com/advisories/18598 | patch vendor advisory third party advisory |
| http://sourceforge.net/forum/forum.php?forum_id=499394 | |
| http://www.gentoo.org/security/en/glsa/glsa-200606-18.xml | vendor advisory |
| http://secunia.com/advisories/20690 | third party advisory vendor advisory |