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Gentoo: 200412-17 Normal Advisory - kfax Buffer Overflow Risk

kfax contains several buffer overflows potentially leading to execution of arbitrary code.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200412-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: kfax: Multiple overflows in the included TIFF library Date: December 19, 2004 Bugs: #73795 ID: 200412-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= kfax contains several buffer overflows potentially leading to execution of arbitrary code. Background ========= KDE is a feature-rich graphical desktop environment for Linux and Unix-like Operating Systems. kfax (part of kdegraphics) is the KDE fax file viewer. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 kde-base/kdegraphics < 3.3.1 Vulnerable! ------------------------------------------------------------------- NOTE: Certain packages are still vulnerable. See Workaround. Description ========== Than Ngo discovered that kfax contains a private copy of the TIFF library and is therefore subject to several known vulnerabilities (see References). Impact ===== 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. Workaround ========= The KDE Team recommends to remove the kfax binary as well as the kfaxpart.la KPart: rm /usr/kde/3.*/lib/kde3/kfaxpart.la rm /usr/kde/3.*/bin/kfax Note: This will render the kfax functionality useless, ifkfax functionality is needed you should upgrade to the KDE 3.3.2 which is not stable at the time of this writing. Resolution ========= All kfax users should use the workaround as no patches are available yet. References ========= [ 1 ] KDE Security Advisory: kfax libtiff vulnerabilities https://kde.org/info/security/advisory-20041209-2.txt [ 2 ] GLSA 200410-11 https://security.gentoo.org/glsa/200410-11 [ 3 ] CAN-2004-0803 https://www.cve.org/CVERecord?id=CVE-CAN-2004-0803 [ 4 ] CAN-2004-0804 https://www.cve.org/CVERecord?id=CVE-CAN-2004-0804 [ 5 ] CAN-2004-0886 https://www.cve.org/CVERecord?id=CVE-CAN-2004-0886 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/200412-17 Concerns? ======== Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org/. License ====== Copyright 2004 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.0/ . Explore Gentoo GLSA 200412-17 regarding kfax, a buffer overflow issue leading to possible arbitrary code execution.. Gentoo Security,kfax Overflows,TIFF Vulnerability,KDE Security Advisory. . LinuxSecurity.com Team

Dec 19, 2004 Gentoo