drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Denial of Service in GDM
Name: |
Denial of Service in GDM |
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ID: |
200709-11 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Di, 18. September 2007, 23:40 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3381 |
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Applikationen: |
Gnome Display Manager |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200709-11 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: Low Title: GDM: Local Denial of Service Date: September 18, 2007 Bugs: #187919 ID: 200709-11
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Synopsis ========
GDM can be crashed by a local user, preventing it from managing future displays.
Background ==========
GDM is the GNOME display manager.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 gnome-base/gdm < 2.18.4 >= 2.18.4 *>= 2.16.7
Description ===========
The result of a g_strsplit() call is incorrectly parsed in the files daemon/gdm.c, daemon/gdmconfig.c, gui/gdmconfig.c and gui/gdmflexiserver.c, allowing for a null pointer dereference.
Impact ======
A local user could send a crafted message to /tmp/.gdm_socket that would trigger the null pointer dereference and crash GDM, thus preventing it from managing future displays.
Workaround ==========
Restrict the write permissions on /tmp/.gdm_socket to trusted users only after each GDM restart.
Resolution ==========
All GDM users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose "gnome-base/gdm"
References ==========
[ 1 ] CVE-2007-3381 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3381
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200709-11.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 2007 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/2.5
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