Re: Fwd: [Full-disclosure] stratsec Security Advisory SS-2010-005: Samba Multiple DoS Vulnerabilities (3.3.x)

[Tomas Hoger <thoger () redhat com>]

On Fri, 28 May 2010 16:45:21 +0300 Eren Türkay wrote:

> > NULL deref CVE-2010-1635 should only affect 3.5.x, as it occurs in
> > this code, which does not exist in 3.4.x:
> >
> > http://git.samba.org/?p=samba.git;a=commitdiff;h=c116652a3050a854
> >
> > On 3.3.x, reproducer causes smbd to follow error code path where
> > smb_panic is called.
>
> Thanks. To summarize, 3.3.x is only affected by OOB read
> (CVE-2010-1642) As smbd follows error code path where smb_panic is
> called, I guess we can say that 3.3.x is not affected by
> CVE-2010-1642.

You should not hit the same NULL deref in 3.3.x as was reported for
3.5.x. The impact is rather similar though, smbd child exits with back
trace in the log and (optionally) core file.

-- 
Tomas Hoger / Red Hat Security Response Team