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Message-Id: <201312092341.rB9NfQ6j028967@linus.mitre.org>
Date: Mon, 9 Dec 2013 18:41:26 -0500 (EST)
From: cve-assign@...re.org
To: ncoghlan@...hat.com
Cc: cve-assign@...re.org, oss-security@...ts.openwall.com
Subject: Re: CPython hash secret can be recoved remotely
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> This is a followup to CVE-2012-1150 (hash table collision CPU usage DOS
> in CPython)
>
> http://bugs.python.org/issue14621 points out that the hash secret in
> CPython can be recovered remotely, so while the original fix addressed
> the "blind DOS" problem (of being able to DOS any Python based service
> with a single prepared payload), it didn't completely eliminate the
> potential for remote DOS attacks based on hash collisions.
> (http://bugs.python.org/issue14621#msg173455 has the details)
>
> Python 3.4+ will use SipHash by default
> (http://www.python.org/dev/peps/pep-0456), which should resolve the
> vulnerability completely.
Use CVE-2013-7040.
- --
CVE assignment team, MITRE CVE Numbering Authority
M/S M300
202 Burlington Road, Bedford, MA 01730 USA
[ PGP key available through http://cve.mitre.org/cve/request_id.html ]
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