[Fc6] was: Re: [Samba] [SECURITY] Buffer overrun in send_mailslot()

[simo]

Fedora 7 and 8 packages are being released but as you may know FC6 has
reached EOL just recently.

As I think this is an important security problem I decided to release
new packages for FC6 so that people that have not yet finished their
migration to newer supported Fedora releases can buy some more time.

This is a one off service I felt compelled to release to help people, I
am not going to do regular releases for FC6.

Packages here:
http://simo.fedoraproject.org/samba

Simo.


On Mon, 2007-12-10 at 07:49 -0600, Gerald (Jerry) Carter wrote:
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> ==========================================================
> ==
> == Subject:     Boundary failure in GETDC mailslot
> ==              processing can result in a buffer overrun
> ==
> == CVE ID#:     CVE-2007-6015
> ==
> == Versions:    Samba 3.0.0 - 3.0.27a (inclusive)
> ==
> == Summary:     Specifically crafted GETDC mailslot requests
> ==              can trigger a boundary error in the domain
> ==              controller GETDC mail slot support which
> ==              can be remotely exploited to execute arbitrary
> ==              code.
> ==
> ==========================================================
> 
> ===========
> Description
> ===========
> 
> Secunia Research reported a vulnerability that allows for
> the execution of arbitrary code in nmbd.  This defect is
> only be exploited when the "domain logons" parameter has
> been enabled in smb.conf.
> 
> 
> ==================
> Patch Availability
> ==================
> 
> A patch addressing this defect has been posted to
> 
>   http://www.samba.org/samba/security/
> 
> Additionally, Samba 3.0.28 has been issued as a security
> release to correct the defect.
> 
> 
> ==========
> Workaround
> ==========
> 
> Samba administrators may avoid this security issue by disabling
> both the "domain logons" options in the server's smb.conf file.
> Note that this will disable all domain controller features as
> well.
> 
> 
> =======
> Credits
> =======
> 
> This vulnerability was reported to Samba developers by
> Alin Rad Pop, Secunia Research.
> 
> The time line is as follows:
> 
> * Nov 22, 2007: Initial report to security at samba.org.
> * Nov 22, 2007: First response from Samba developers confirming
>   the bug along with a proposed patch.
> * Dec 10, 2007: Public security advisory made available.
> 
> 
> ==========================================================
> == Our Code, Our Bugs, Our Responsibility.
> == The Samba Team
> ==========================================================
> 
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-- 
Simo Sorce
Samba Team GPL Compliance Officer <simo at samba.org>
Senior Software Engineer at Red Hat Inc. <ssorce at redhat.com>