full-disclosure - Re: GNU libc/regcomp(3) Multiple Vulnerabilities

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Message-ID: <4D2CA0A4.8000207@securityreason.com>
Date: Tue, 11 Jan 2011 19:25:40 +0100
From: Maksymilian Arciemowicz <cxib@...urityreason.com>
To: halfdog <me@...fdog.net>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: GNU libc/regcomp(3) Multiple Vulnerabilities

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On 01/11/2011 04:33 PM, halfdog wrote:
> 
> Nice find, but not the first one, look at:
> 
> https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/343894
> 
> I just reported the issue to ubuntu so see how their bug tracking team
> was performing on an issue where a standard byte-array-fuzzer just
> needed 2secs to find it. I wanted to know, if they could detect a
> misclassified issue (was not reported as security bug) and bring it to a
> fix. I would have bet, that they would be faster than you, but it seems
> that you made the race. What I learned from the excercise (see bug
> report date March 2009), is that the ubuntu launchpad platform is an
> invaluable source of exploits when used together with google mining.

I agree with you but in my opinion ubuntu tracking team has here nothing
to do. Main problem exists in the GNU libc code so this team should fix
the problem. Just compare the regcomp(3)/BSD and regcomp (3)/linux. In
my opinion the GNU libc implementation is the worst in terms of safety.
Probably vulnerability in glob(3) (CVE-2010-2632) can be used to
resource exhasusion in GNU inetutils ftp server.


- -- 
Best Regards
pub   4096R/D6E5B530 2010-09-19
uid                  Maksymilian Arciemowicz (cx) <max@...b.net>
sub   4096R/58BA663C 2010-09-19
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