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Re: Buffer overflow in gnutls-serv http code
From: |
Simon Josefsson |
Subject: |
Re: Buffer overflow in gnutls-serv http code |
Date: |
Mon, 13 Dec 2010 20:18:34 +0100 |
User-agent: |
Gnus/5.110011 (No Gnus v0.11) Emacs/23.2 (gnu/linux) |
Tomas Mraz <address@hidden> writes:
> On Tue, 2010-12-07 at 08:31 +0100, Simon Josefsson wrote:
>> Tomas Mraz <address@hidden> writes:
>>
>> > The gnutls-serv uses fixed allocated buffer for the response which can
>> > be pretty long if a client certificate is presented to it and the http
>> > header is large. This causes buffer overflow and heap corruption which
>> > then leads to random segfaults or aborts.
>> >
>> > It was reported originally here:
>> > https://bugzilla.redhat.com/show_bug.cgi?id=659259
>> >
>> > The attached patch changes sprintf calls in peer_print_info() to
>> > snprintf so the buffer is never overflowed.
>>
>> Thanks -- for copyright reasons, did you do this on RedHat time?
>> Otherwise the RedHat copyright assignment doesn't cover it, and I
>> couldn't find an individual assignment.
>
> I did it on behalf of Red Hat so the Red Hat copyright assignment covers
> it.
Thanks for confirming this!
/Simon