kfax: Multiple overflows in the included TIFF library
Gentoo Linux Security Advisory
||GLSA 200412-17 / kfax
||December 19, 2004
||January 12, 2005: 04
All supported architectures
kfax contains several buffer overflows potentially leading to execution of
KDE is a feature-rich graphical desktop environment for Linux and
Unix-like Operating Systems. kfax (part of kdegraphics) is the KDE fax
Than Ngo discovered that kfax contains a private copy of the TIFF
library and is therefore subject to several known vulnerabilities (see
A remote attacker could entice a user to view a carefully-crafted TIFF
image file with kfax, which would potentially lead to execution of
arbitrary code with the rights of the user running kfax.
The KDE Team recommends to remove the kfax binary as well as the
Code Listing 3.1: Workaround
Note: This will render the kfax functionality useless, if kfax
functionality is needed you should upgrade to the KDE 3.3.2 which is
not stable at the time of this writing.
There is no known workaround at this time.
All kfax users should upgrade to the latest version:
Code Listing 3.2: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=kde-base/kdegraphics-3.3.2"