CVE-2012-2122
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.
Key facts
- CVSS score
- 5.1 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:H/Au:N/C:P/I:P/A:P- Weakness (CWE)
- CWE-287
- EPSS score
- 96.6% (100th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2012-2124)
- Published
- June 26, 2012
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2012-2124 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- mariadb / mariadb
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
- oracle / mysql
and 11 more…
References
- http://bugs.mysql.com/bug.php?id=64884(Exploit)
- 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(Patch)
- http://secunia.com/advisories/49417(Vendor Advisory)
- 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(Exploit)
- https://community.rapid7.com/community/metasploit/blog/2012/06/11/cve-2012-2122-a-tragically-comedic-security-flaw-in-mysql(Exploit)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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