drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Pufferüberlauf in X.Org
Name: |
Pufferüberlauf in X.Org |
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ID: |
200710-16 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Mo, 15. Oktober 2007, 00:40 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4730 |
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Applikationen: |
X11 |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200710-16 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High Title: X.Org X server: Composite local privilege escalation Date: October 14, 2007 Bugs: #191964 ID: 200710-16
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Synopsis ========
A vulnerability has been discovered in the Composite extension of the X.Org X server, allowing for a local privilege escalation.
Background ==========
The X Window System is a graphical windowing system based on a client/server model.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 x11-base/xorg-server < 1.3.0.0-r1 >= 1.3.0.0-r1
Description ===========
Aaron Plattner discovered a buffer overflow in the compNewPixmap() function when copying data from a large pixel depth pixmap into a smaller pixel depth pixmap.
Impact ======
A local attacker could execute arbitrary code with the privileges of the user running the X server, typically root.
Workaround ==========
Disable the Composite extension by setting ' Option "Composite" "disable" ' in the Extensions section of xorg.conf.
Note: This could affect the functionality of some applications.
Resolution ==========
All X.Org X server users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=x11-base/xorg-server-1.3.0.0-r1"
References ==========
[ 1 ] CVE-2007-4730 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4730
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200710-16.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 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
iD8DBQFHEppiuhJ+ozIKI5gRAmOeAJ46xK+4nH8LWGxbNmnlmPrltBqsHgCfUTNK 8qUzM6SvnXk2c2yZgp50GTk= =DiOR -----END PGP SIGNATURE----- -- gentoo-announce@gentoo.org mailing list
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