GLSA 200512-14 NBD Tools: Buffer overflow in NBD server
Posted on: 12/23/2005 09:22 PM

A new security update has been released for Gentoo Linux - NBD Tools: Buffer overflow in NBD server. Here the announcement:

Gentoo Linux Security Advisory GLSA 200512-14
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http://security.gentoo.org/
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Severity: High
Title: NBD Tools: Buffer overflow in NBD server
Date: December 23, 2005
Bugs: #116314
ID: 200512-14

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Synopsis
========

The NBD server is vulnerable to a buffer overflow that may result in
the execution of arbitrary code.

Background
==========

The NBD Tools are the Network Block Device utilities allowing one to
use remote block devices over a TCP/IP network. It includes a userland
NBD server.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-block/nbd lt; 2.8.2-r1 gt;= 2.8.2-r1

Description
===========

Kurt Fitzner discovered that the NBD server allocates a request buffer
that fails to take into account the size of the reply header.

Impact
======

A remote attacker could send a malicious request that can result in the
execution of arbitrary code with the rights of the NBD server.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All NBD Tools users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=sys-block/nbd-2.8.2-r1"

References
==========

[ 1 ] CVE-2005-3534
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3534

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200512-14.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@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 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/2.0



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