drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in X.Org
Name: |
Mehrere Probleme in X.Org |
|
ID: |
200801-09 |
|
Distribution: |
Gentoo |
|
Plattformen: |
Keine Angabe |
|
Datum: |
So, 20. Januar 2008, 22:45 |
|
Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5760
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5958
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6427
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6428
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6429
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0006
http://lists.freedesktop.org/archives/xorg/2008-January/031918.html |
|
Applikationen: |
X11 |
|
Originalnachricht |
--nextPart1213465.jUEZ6MIf4r Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200801-09 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High Title: X.Org X server and Xfont library: Multiple vulnerabilities Date: January 20, 2008 Bugs: #204362 ID: 200801-09
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Synopsis ========
Multiple vulnerabilities have been discovered in the X.Org X server and Xfont library, allowing for a local privilege escalation and arbitrary code execution.
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-r4 >= 1.3.0.0-r4 2 x11-libs/libxfont < 1.3.1-r1 >= 1.3.1-r1 ------------------------------------------------------------------- 2 affected packages on all of their supported architectures. -------------------------------------------------------------------
Description ===========
regenrecht reported multiple vulnerabilities in various X server extension via iDefense:
* The XFree86-Misc extension does not properly sanitize a parameter within a PassMessage request, allowing the modification of a function pointer (CVE-2007-5760).
* Multiple functions in the XInput extension do not properly sanitize client requests for swapping bytes, leading to corruption of heap memory (CVE-2007-6427).
* Integer overflow vulnerabilities in the EVI extension and in the MIT-SHM extension can lead to buffer overflows (CVE-2007-6429).
* The TOG-CUP extension does not sanitize an index value in the ProcGetReservedColormapEntries() function, leading to arbitrary memory access (CVE-2007-6428).
* A buffer overflow was discovered in the Xfont library when processing PCF font files (CVE-2008-0006).
* The X server does not enforce restrictions when a user specifies a security policy file and attempts to open it (CVE-2007-5958).
Impact ======
Remote attackers could exploit the vulnerability in the Xfont library by enticing a user to load a specially crafted PCF font file resulting in the execution of arbitrary code with the privileges of the user running the X server, typically root. Local attackers could exploit this and the vulnerabilities in the X.org extensions to gain elevated privileges. If the X server allows connections from the network, these vulnerabilities could be exploited remotely. A local attacker could determine the existence of arbitrary files by exploiting the last vulnerability or possibly cause a Denial of Service.
Workaround ==========
Workarounds for some of the vulnerabilities can be found in the X.Org security advisory as listed under References.
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-r4"
All X.Org Xfont library users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=x11-libs/libXfont-1.3.1-r1"
References ==========
[ 1 ] CVE-2007-5760 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5760 [ 2 ] CVE-2007-5958 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5958 [ 3 ] CVE-2007-6427 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6427 [ 4 ] CVE-2007-6428 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6428 [ 5 ] CVE-2007-6429 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6429 [ 6 ] CVE-2008-0006 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0006 [ 7 ] X.Org security advisory http://lists.freedesktop.org/archives/xorg/2008-January/031918.html
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200801-09.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 2008 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
--nextPart1213465.jUEZ6MIf4r Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part.
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux)
iD8DBQBHk7+/yZx3L/ph1soRAk24AJ4whNe9pSrmA4DThvrELc0Vat3cgACgkZh8 FpljB5+UrwQDHNwh5r2L3zo= =QrNd -----END PGP SIGNATURE-----
--nextPart1213465.jUEZ6MIf4r-- -- gentoo-announce@lists.gentoo.org mailing list
|
|
|
|