Details
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Bug
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Status: Closed (View Workflow)
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Blocker
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Resolution: Fixed
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5.5.28, 5.3.10, 5.2.12, 5.1.62
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None
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None
Description
MySQL bug 13889741 (which is CVE-2012-3163) was, apparently, not completely fixed. A very similar test case finds new, much more dangerous, buffer overflows in acl_get() and check_grant_db_routine(). They allow to overwrite the buffer by an arbitrary number of bytes, not just by one as in bug 13889741. One can trivially put a shellcode there.
To exploit this one needs a valid low-privileged user account in the MariaDB (or MySQL) server.
This new vulnerability is registered as CVE-2012-5611
Reported upstream as http://bugs.mysql.com/bug.php?id=67685
Public disclosure: http://seclists.org/fulldisclosure/2012/Dec/4