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Gentoo Linux Security Advisory GLSA 200502-32
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http://security.gentoo.org/
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Severity: Normal
Title: UnAce: Buffer overflow and directory traversal
vulnerabilities
Date: February 28, 2005
Bugs: #81958
ID: 200502-32
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Synopsis
========
UnAce is vulnerable to several buffer overflow and directory traversal
attacks.
Background
==========
UnAce is an utility to extract, view and test the contents of an ACE
archive.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-arch/unace <= 1.2b *>= 1.2b-r1
app-arch/unace >= 2.0 *>= 1.2b-r1
Description
===========
Ulf Harnhammar discovered that UnAce suffers from buffer overflows when
testing, unpacking or listing specially crafted ACE archives
(CAN-2005-0160). He also found out that UnAce is vulnerable to
directory traversal attacks, if an archive contains "./.." sequences or
absolute filenames (CAN-2005-0161).
Impact
======
An attacker could exploit the buffer overflows to execute malicious
code or the directory traversals to overwrite arbitrary files.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All UnAce users should upgrade to the latest available 1.2 version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/unace-1.2b-r1"
References
==========
[ 1 ] CAN-2005-0160
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0160
[ 2 ] CAN-2005-0161
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0161
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200502-32.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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