bzip2: Denial of Service
Gentoo Linux Security Advisory
||GLSA 200804-02 / bzip2
||April 02, 2008
||April 02, 2008: 01
All supported architectures
A buffer overread vulnerability has been discovered in Bzip2.
bzip2 is a free and open source lossless data compression program.
The Oulu University discovered that bzip2 does not properly check
offsets provided by the bzip2 file, leading to a buffer overread.
Remote attackers can entice a user or automated system to open a
specially crafted file that triggers a buffer overread, causing a
Denial of Service. libbz2 and programs linking against it are also
There is no known workaround at this time.
All bzip2 users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/bzip2-1.0.5"