drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Ausführen beliebiger Kommandos in XnView
Name: |
Ausführen beliebiger Kommandos in XnView |
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ID: |
200512-18 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Fr, 30. Dezember 2005, 13:46 |
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Referenzen: |
Keine Angabe |
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Applikationen: |
XnView |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200512-18 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Normal Title: XnView: Privilege escalation Date: December 30, 2005 Bugs: #117063 ID: 200512-18
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Synopsis ========
XnView may search for shared libraries in an untrusted location, potentially allowing local users to execute arbitrary code with the privileges of another user.
Background ==========
XnView is an efficient multimedia viewer, browser and converter, distributed free for non-commercial use.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 x11-misc/xnview < 1.70-r1 >= 1.70-r1 ------------------------------------------------------------------- # Package 1 only applies to x86 users.
Description ===========
Krzysiek Pawlik of Gentoo Linux discovered that the XnView package for IA32 used the DT_RPATH field insecurely, causing the dynamic loader to search for shared libraries in potentially untrusted directories.
Impact ======
A local attacker could create a malicious shared object that would be loaded and executed when a user attempted to use an XnView utility. This would allow a malicious user to effectively hijack XnView and execute arbitrary code with the privileges of the user running the program.
Workaround ==========
The system administrator may use the chrpath utility to remove the DT_RPATH field from the XnView utilities:
# emerge app-admin/chrpath # chrpath --delete /opt/bin/nconvert /opt/bin/nview /opt/bin/xnview
Resolution ==========
All XnView users on the x86 platform should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=x11-misc/xnview-1.70-r1"
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200512-18.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 2005 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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