Joined: 17 Apr 2002
Location: Raleigh, NC
|Posted: Mon Feb 28, 2005 4:58 pm Post subject: [ GLSA 200502-32 ] UnAce: Buffer overflow and directory trav
|Gentoo Linux Security Advisory
Title: UnAce: Buffer overflow and directory traversal vulnerabilities (GLSA 200502-32)
Date: February 28, 2005
UnAce is vulnerable to several buffer overflow and directory traversal attacks.
UnAce is an utility to extract, view and test the contents of an ACE archive.
Vulnerable: <= 1.2b
Vulnerable: >= 2.0
Unaffected: >= 1.2b-r1 < 1.3
Architectures: All supported architectures
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).
An attacker could exploit the buffer overflows to execute malicious code or the directory traversals to overwrite arbitrary files.
There is no known workaround at this time.
All UnAce users should upgrade to the latest available 1.2 version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/unace-1.2b-r1"
Last edited by GLSA on Sun Nov 12, 2006 4:16 am; edited 3 times in total