REDHAT-BUG-883719
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>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| MySQL Server |
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Reference Links
- http://seclists.org/fulldisclosure/2012/Dec/58
- 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/
- https://bugzilla.redhat.com/show_bug.cgi?id=883719
Frequently Asked Questions
What is the severity of REDHAT-BUG-883719?
REDHAT-BUG-883719 is considered a serious vulnerability due to its impact on password security in MySQL.
How do I fix REDHAT-BUG-883719?
To fix REDHAT-BUG-883719, ensure you are using the latest version of MySQL with the relevant security patches applied.
Who is affected by REDHAT-BUG-883719?
Users and administrators of MySQL Server are affected by REDHAT-BUG-883719 if they do not update their software.
What is the nature of the vulnerability in REDHAT-BUG-883719?
The nature of the vulnerability in REDHAT-BUG-883719 relates to the improper handling of password salt values, which compromises password guessing defenses.
When was REDHAT-BUG-883719 reported?
REDHAT-BUG-883719 was reported in December 2012.
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