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Date: Sat, 13 Jul 2013 00:07:48 -0600
From: Kurt Seifried <kseifried@...hat.com>
To: oss-security@...ts.openwall.com
CC: mancha <mancha1@...h.com>, solar@...nwall.com
Subject: Re: CVE request: Cyrus-sasl NULL ptr. dereference
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Hash: SHA1
On 07/12/2013 09:47 AM, mancha wrote:
> On Fri, 12 Jul 2013 15:35:22 +0000 "Solar Designer" wrote:
>> Does this really crash the entire daemon process rather than just
>> one of its children (where a new one would be spawned for another
>> request)?
>>
>> I think this needs to be clarified, and the answer will affect
>> whether we have a security issue (CVE-worthy) or not.
>>
>> Alexander
>
> That is a good question. The short answer is there isn't a re-spawn
> of crashed processes. The longer answer is cyrus-sasl's saslauthd
> defaults to starting up 5 round-robin listening threads
> (configurable via -n switch).
>
> Under a default scenario, authentication would continue to be
> available until the 5th NULL ptr. dereference.
>
> --mancha
>
Please use CVE-2013-4122 for this issue.
- --
Kurt Seifried Red Hat Security Response Team (SRT)
PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993
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