UnAce: Buffer overflow and directory traversal vulnerabilities
Gentoo Linux Security Advisory
||GLSA 200502-32 / unace
||February 28, 2005
||May 19, 2014: 2
All supported architectures
UnAce is vulnerable to several buffer overflow and directory
UnAce is an utility to extract, view and test the contents of an ACE
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 version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/unace-2.5-r3"