GLSA 200501-44: ncpfs: Multiple vulnerabilities
Posted on: 01/30/2005 07:10 PM

A ncpfs security update is available for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200501-44
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http://security.gentoo.org/
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Severity: Normal
Title: ncpfs: Multiple vulnerabilities
Date: January 30, 2005
Bugs: #77414
ID: 200501-44

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Synopsis
=======

The ncpfs utilities contain multiple flaws, potentially resulting in the remote execution of arbitrary code or local file access with elevated privileges.

Background
=========

ncpfs is a NCP protocol network filesystem driver that allows access to NetWare services, to mount volumes of NetWare servers or print to NetWare print queues.

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

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Package / Vulnerable / Unaffected
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1 net-fs/ncpfs < 2.2.6 >= 2.2.6

Description
==========

Erik Sjolund discovered two vulnerabilities in the programs bundled with ncpfs: there is a potentially exploitable buffer overflow in ncplogin (CAN-2005-0014), and due to a flaw in nwclient.c, utilities using the NetWare client functions insecurely access files with elevated privileges (CAN-2005-0013).

Impact
=====

The buffer overflow might allow a malicious remote NetWare server to execute arbitrary code on the NetWare client. Furthermore, a local attacker may be able to create links and access files with elevated privileges using SUID ncpfs utilities.

Workaround
=========

There is no known workaround at this time.

Resolution
=========

All ncpfs users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-fs/ncpfs-2.2.6"

References
=========

[ 1 ] CAN-2005-0013
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0013
[ 2 ] CAN-2005-0014
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0014
[ 3 ] ncpfs ChangeLog
ftp://platan.vc.cvut.cz/pub/linux/ncpfs/Changes-2.2.6

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

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

http://security.gentoo.org/glsa/glsa-200501-44.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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