From jaervosz@gentoo.org Mon Feb 28 12:08:42 2005 From: Sune Kloppenborg Jeppesen To: gentoo-announce@gentoo.org Cc: security-alerts@linuxsecurity.com, bugtraq@securityfocus.com, full-disclosure@lists.netsys.com Date: Mon, 28 Feb 2005 17:37:58 +0100 Subject: [Full-Disclosure] [ GLSA 200502-32 ] UnAce: Buffer overflow and directory traversal vulnerabilities - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200502-32 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: UnAce: Buffer overflow and directory traversal vulnerabilities Date: February 28, 2005 Bugs: #81958 ID: 200502-32 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 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 [ Part 1.2, Application/PGP-SIGNATURE 196bytes. ] [ Unable to print this part. ] [ Part 2: "Attached Text" ] _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html