CVE-2012-5627
First published: Wed Dec 05 2012(Updated: )
A vulnerability was found in the handling of password salt values in MySQL. When a user logs into MySQL a salt value is generated that is then used to prevent password guessing attacks (since the salt value must be known in order to send a password). This salt value is created at the start of a session and used for the entire session, once authenticated an attacker can use the MySQL "change_user" command to attempt to login as a different, as the salt value is known a password guessing attack will be much more efficient. Reference: <a href="http://seclists.org/fulldisclosure/2012/Dec/58">http://seclists.org/fulldisclosure/2012/Dec/58</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Oracle MySQL | >=5.5.0<5.5.29 | |
| Mariadb Mariadb | >=5.2.0<5.2.14 | |
| Mariadb Mariadb | >=5.3.0<5.3.12 | |
| Mariadb Mariadb | >=5.5.0<5.5.29 | |
| Mariadb Mariadb | =10.0.0 |
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Reference Links
- http://seclists.org/fulldisclosure/2012/Dec/58
- http://seclists.org/fulldisclosure/2012/Dec/83
- http://seclists.org/oss-sec/2012/q4/424
- http://secunia.com/advisories/53372
- http://security.gentoo.org/glsa/glsa-201308-06.xml
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:102
- https://bugzilla.redhat.com/show_bug.cgi?id=883719
- https://mariadb.atlassian.net/browse/MDEV-3915
- https://access.redhat.com/security/cve/CVE-2012-5627
- http://www.openwall.com/lists/oss-security/2012/12/06/4
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=883719#c1
- http://www.oracle.com/technetwork/topics/security/cpujan2013-1515902.html
- http://bazaar.launchpad.net/~maria-captains/maria/5.2/revision/3200
- http://bazaar.launchpad.net/~maria-captains/maria/5.2/revision/3201
- https://access.redhat.com/security/updates/classification/
- collector/nvd-index
- agent/severity
- agent/weakness
- agent/author
- agent/tags
- agent/type
- agent/event
- agent/description
- agent/remedy
- agent/first-publish-date
- agent/last-modified-date
- agent/softwarecombine
- agent/references
- collector/mitre-cve
- source/MITRE
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2012-5627
- vendor/oracle
- canonical/oracle mysql
- version/oracle mysql/5.5.0
- vendor/mariadb
- canonical/mariadb mariadb
- version/mariadb mariadb/5.2.0
- version/mariadb mariadb/5.3.0
- version/mariadb mariadb/5.5.0
- version/mariadb mariadb/10.0.0