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Remote Code Execution in Samba's nmbd



CVE-2007-5398 - Remote Code Execution in Samba's nmbd
CVE-2007-5398 - Remote Code Execution in Samba's nmbd



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============================================================ Subject:     Remote code execution in Samba's WINS
==              server daemon (nmbd) when processing name
==              registration followed name query requests.
=== CVE ID#:     CVE-2007-5398
=== Versions:    Samba 3.0.0 - 3.0.26a (inclusive)
=== Summary:     When nmbd has been configured as a WINS
==              server, a client can send a series of name
==              registration request followed by a specific
==              name query request packet and execute
==              arbitrary code.
==========================================================
==========Description
==========
Secunia Research reported a vulnerability that allows for
the execution of arbitrary code in nmbd.  This defect may
only be exploited when the "wins support" 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 3.0.27 has been issued as a security
release to correct the defect.


=========Workaround
=========
Samba administrators may avoid this security issue by
disabling the "wins support" feature in the hosts smb.conf
file.


======Credits
======
This vulnerability was reported to Samba developers by
Alin Rad Pop, Secunia Research.

The time line is as follows:

* Oct 30, 2007: Initial report to security@samba.org. 
* Oct 30, 2007: First response from Samba developers confirming
  the bug along with a proposed patch.
* Nov 15, 2007: Public security advisory to be made available.


=========================================================== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
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