UnAce: Buffer overflow and directory traversal vulnerabilities
Gentoo Linux Security Advisory
||GLSA 200502-32 / unace
||February 28, 2005
||February 28, 2005: 01
All supported architectures
UnAce is vulnerable to several buffer overflow and directory traversal
UnAce is an utility to extract, view and test the contents of an
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
There is no known workaround at this time.
All UnAce users should upgrade to the latest available 1.2
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/unace-1.2b-r1"