[gentoo-announce] [ GLSA 200805-23 ] Samba: Heap-based buffer overflow

[news 28]

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Gentoo Linux Security Advisory GLSA 200805-23

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http://security.gentoo.org/

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Severity: Normal

Title: Samba: Heap-based buffer overflow

Date: May 29, 2008

Bugs: #222299

ID: 200805-23

 

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Synopsis

========

 

A heap-based buffer overflow vulnerability was found in Samba, allowing

for the execution of arbitrary code.

 

Background

==========

 

Samba is a suite of SMB and CIFS client/server programs.

 

Affected packages

=================

 

-------------------------------------------------------------------

Package / Vulnerable / Unaffected

-------------------------------------------------------------------

1 net-fs/samba < 3.0.28a-r1 >= 3.0.28a-r1

 

Description

===========

 

Alin Rad Pop (Secunia Research) reported a vulnerability in Samba

within the receive_smb_raw() function in the file lib/util_sock.c when

parsing SMB packets, possibly leading to a heap-based buffer overflow

via an overly large SMB packet.

 

Impact

======

 

A remote attacker could possibly exploit this vulnerability by enticing

a user to connect to a malicious server or by sending specially crafted

packets to an nmbd server configured as a local or domain master

browser, resulting in the execution of arbitrary code.

 

Workaround

==========

 

There is no known workaround at this time.

 

Resolution

==========

 

All Samba users should upgrade to the latest version:

 

# emerge --sync

# emerge --ask --oneshot --verbose ">=net-fs/samba-3.0.28a-r1"

 

References

==========

 

[ 1 ] CVE-2008-1105

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1105

 

Availability

============

 

This GLSA and any updates to it are available for viewing at

the Gentoo Security Website:

 

http://security.gentoo.org/glsa/glsa-200805-23.xml

 

Concerns?

=========

 

Security is a primary focus of Gentoo Linux and ensuring the

confidentiality and security of our users machines is of utmost

importance to us. Any security concerns should be addressed to

security ( -at -) gentoo.org or alternatively, you may file a bug at

http://bugs.gentoo.org.

 

License

=======

 

Copyright 2008 Gentoo Foundation, Inc; referenced text

belongs to its owner(s).

 

The contents of this document are licensed under the

Creative Commons - Attribution / Share Alike license.

 

http://creativecommons.org/licenses/by-sa/2.5