[ GLSA 200501-44 ] ncpfs: Multiple vulnerabilities

[Thierry Carrez]

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
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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