oss-security - Re: CVE request - mcrypt buffer overflow flaw

Follow @Openwall on Twitter for new release announcements and other news

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <5048E3A7.6030803@redhat.com>
Date: Thu, 06 Sep 2012 11:55:51 -0600
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security@...ts.openwall.com
CC: Vincent Danen <vdanen@...hat.com>
Subject: Re: CVE request - mcrypt buffer overflow flaw

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 09/06/2012 08:37 AM, Vincent Danen wrote:
> I don't believe a CVE has been assigned to this, could one be?
> 
> A buffer overflow was reported [1],[2] in mcrypt version 2.6.8 and
> earlier due to a boundary error in the processing of an encrypted file
> (via the check_file_head() function in src/extra.c).  If a user were
> tricked into attempting to decrypt a specially-crafted .nc encrypted
> flie, this flaw would cause a stack-based buffer overflow that could
> potentially lead to arbitrary code execution.
> 
> References:
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=855029
> https://secunia.com/advisories/50507/
> https://bugs.gentoo.org/show_bug.cgi?id=434112
> http://packetstormsecurity.org/files/116268/mcrypt-2.6.8-Buffer-Overflow-Proof-Of-Concept.html

Please use CVE-2012-4409 for this issue.

- -- 
Kurt Seifried Red Hat Security Response Team (SRT)
PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://www.enigmail.net/
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=JshC
-----END PGP SIGNATURE-----

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.