Vulnerability CVE-2012-2122
Published: 2012-06-26

Description:
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.

See advisories in our WLB2 database:
Topic
Author
Date
High
MySQL Remote Root Authentication Bypass
Dave Kennedy
13.06.2012
High
Kartoo Search Engine XSS / Remote File Inclusion
Juan Carlos Garc...
20.11.2013

Type:

CWE-287

 (Improper Authentication)

CVSS2 => (AV:N/AC:H/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5.1/10
6.4/10
4.9/10
Exploit range
Attack complexity
Authentication
Remote
High
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Oracle -> Mysql 
Mariadb -> Mariadb 

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