[ GLSA 200502-32 ] UnAce: Buffer overflow and directory traversal vulnerabilities

[GLSA]

Gentoo Linux Security Advisory

Title: UnAce: Buffer overflow and directory traversal vulnerabilities (GLSA 200502-32)
Severity: normal
Exploitable: remote
Date: February 28, 2005
Bug(s): #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: app-arch/unace
Vulnerable: <= 1.2b
Vulnerable: >= 2.0
Unaffected: >= 1.2b-r1 < 1.3
Architectures: All supported architectures


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: