Bug 882600 (CVE-2012-5612) - CVE-2012-5612 mysql: MDL subsystem heap-based buffer overflow
Summary: CVE-2012-5612 mysql: MDL subsystem heap-based buffer overflow
Alias: CVE-2012-5612
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On:
Blocks: 882596 mysql-cpu-2013-01 895572
TreeView+ depends on / blocked
Reported: 2012-12-02 06:51 UTC by Huzaifa S. Sidhpurwala
Modified: 2021-02-17 08:18 UTC (History)
5 users (show)

Fixed In Version: mysql 5.5.29
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2013-01-18 04:53:00 UTC

Attachments (Terms of Use)

Description Huzaifa S. Sidhpurwala 2012-12-02 06:51:02 UTC
A heap-based buffer overflow was found in Mysql. An authenticated database user could use this flaw to cause mysqld to crash or possibly execute arbitrary code with the privileges of the user running mysql.


This issue was assigned CVE-2012-5612

Comment 1 Huzaifa S. Sidhpurwala 2012-12-03 04:52:19 UTC
External Reference:


Comment 3 Huzaifa S. Sidhpurwala 2012-12-04 10:02:22 UTC
This issue only affect MySQL 5.5 and higher, since the vulnerable MDL subsystem was first implemented in MySQL 5.5:


Comment 5 Huzaifa S. Sidhpurwala 2012-12-04 10:14:12 UTC
Based on comment #3, this flaw does not seem to affect the version of mysql shipped with Red Hat Enterprise Linux 5 and 6, since mariadb upstream suggests that this only affects 5.5 and above.

Comment 7 Jan Lieskovsky 2013-01-16 13:38:00 UTC
Oracle January 2013 CPU record:

Comment 8 Huzaifa S. Sidhpurwala 2013-01-18 04:53:00 UTC
Text of the Oracle flaw description:

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server Parser). Supported versions that are affected are 5.5.28 and earlier. Easily exploitable vulnerability allows successful authenticated network attacks via multiple protocols. Successful attack of this vulnerability can result in unauthorized Operating System takeover including arbitrary code execution. 


Upstream notes this issue only affected MySQL versions 5.5.  Red Hat Enterprise Linux 5 and 6 include MySQL versions 5.0.x and 5.1.x respectively, which are not listed as affected.  Current Fedora versions are already updated to fixed upstream version.  Closing.

Comment 10 Tomas Hoger 2013-01-22 21:04:08 UTC
The fix is also noted in 5.5.29 release notes:

  Very long table aliases in queries could cause the server to exit.
  (Bug #15948123)


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