drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Puffer- und Zahlenüberläufe in kfax
Name: |
Puffer- und Zahlenüberläufe in kfax
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ID: |
200412-17 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Mo, 20. Dezember 2004, 12:00 |
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Referenzen: |
Keine Angabe |
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Applikationen: |
KDE Software Compilation |
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Originalnachricht |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200412-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: kfax: Multiple overflows in the included TIFF library Date: December 19, 2004 Bugs: #73795 ID: 200412-17
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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, if kfax 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 http://www.kde.org/info/security/advisory-20041209-2.txt [ 2 ] GLSA 200410-11 http://www.gentoo.org/security/en/glsa/glsa-200410-11.xml [ 3 ] CAN-2004-0803 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0803 [ 4 ] CAN-2004-0804 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0804 [ 5 ] CAN-2004-0886 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0886
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200412-17.xml
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 security@gentoo.org or alternatively, you may file a bug at http://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.
http://creativecommons.org/licenses/by-sa/2.0
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