CVE-2012-2122
MEDIUMEPSS 100th pctlDescription
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.
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
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
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.