SB2012062601 - Improper Authentication in Oracle MySQL Server

Description

This security bulletin contains information about 1 security vulnerability.

1) Improper Authentication (CVE-ID: CVE-2012-2122)

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

sql/password.c in Oracle MySQL 5.1.x before 5.1.63, 5.5.x before 5.5.24, and 5.6.x before 5.6.6, and MariaDB 5.1.x before 5.1.62, 5.2.x before 5.2.12, 5.3.x before 5.3.6, and 5.5.x before 5.5.23, when running in certain environments with certain implementations of the memcmp function, allows remote attackers to bypass authentication by repeatedly authenticating with the same incorrect password, which eventually causes a token comparison to succeed due to an improperly-checked return value.

Remediation

Install update from vendor's website.

References

• http://bugs.mysql.com/bug.php?id=64884
• http://kb.askmonty.org/en/mariadb-5162-release-notes/
• http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00007.html
• http://seclists.org/oss-sec/2012/q2/493
• http://secunia.com/advisories/49417
• http://secunia.com/advisories/53372
• http://security.gentoo.org/glsa/glsa-201308-06.xml
• http://securitytracker.com/id?1027143
• http://www.exploit-db.com/exploits/19092
• http://www.securityfocus.com/bid/53911
• https://community.rapid7.com/community/metasploit/blog/2012/06/11/cve-2012-2122-a-tragically-comedic-security-flaw-in-mysql