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Gentoo Linux Security Advisory 200502-32

Gentoo Linux Security Advisory 200502-32
Posted Mar 1, 2005
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory GLSA 200502-32 - Ulf Harnhammar discovered that UnAce suffers from buffer overflows when testing, unpacking or listing specially crafted ACE archives. He also found out that UnAce is vulnerable to directory traversal attacks, if an archive contains ./.. sequences or absolute filenames.

tags | advisory, overflow
systems | linux, gentoo
advisories | CVE-2005-0160, CVE-2005-0161
SHA-256 | ae4a4c5c890780d64193effa07efc6176d68f843d0ba2cc2659c08cbd16090df

Gentoo Linux Security Advisory 200502-32

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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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