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Re: [Full-disclosure] MySQL Denial of Service Zeroday PoC
From: Sergei Golubchik <serg () askmonty org>
Date: Thu, 28 Feb 2013 09:50:33 +0100

Hi, Kurt!

Cheerio, Kingcope

So normally for MySQL issues Oracle would assign the CVE #. However in
this case we have a bit of a time constraint (it's a weekend and this
is blowing up quickly)  and the impacts are potentially quite severe.
So I've spoken with some other Red Hat SRT members and we feel it is
best to get CVE #'s assigned for these issues quickly so we can refer
to them properly.

I am also adding MySQL, Oracle, MariaDB, OSS-SEC, Steven Christey,
cve-assign and OSVDB to the CC so that everyone is aware of what is
going on.

http://seclists.org/fulldisclosure/2012/Dec/7

I've just looked at CVE-2012-5614 - it's not quite correct:

* it claims the bug was in UpdateXML - if you look at the exploit,
  you'll see that it sends an invalid packet to the server, the
  UpdateXML part is after the exit statement, so it's a dead code.

* it references https://mariadb.atlassian.net/browse/MDEV-3910
  which is about the invalid packet, not about UpdateXML

* but MDEV-3910 also mentions that this invalid packet crash was
  introduced in MySQL-5.5.18 and fixed in MySQL-5.5.21. While CVE entry
  says that MySQL 5.5.19 and MariaDB 5.5.28a are vulnerable.

* UpdateXML on the other hand, was vulnerable only in MySQL, starting
  from 5.6.6 and fixed in 5.6.10. Earlier MySQL versions and all MariaDB
  are not affected.

Regards,
Sergei


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