drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in LibXfont, TightVNC
Name: |
Mehrere Probleme in LibXfont, TightVNC |
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ID: |
200705-10 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Di, 8. Mai 2007, 18:39 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1003
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1351
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1352 |
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Applikationen: |
TightVnc, X11 |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200705-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High Title: LibXfont, TightVNC: Multiple vulnerabilities Date: May 08, 2007 Bugs: #172575, #174200 ID: 200705-10
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Synopsis ========
Multiple vulnerabilities have been reported in libXfont and TightVNC, allowing for the execution of arbitrary code with root privileges.
Background ==========
LibXfont is the X.Org font library. TightVNC is a VNC client/server for X displays.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/tightvnc < 1.2.9-r4 >= 1.2.9-r4 2 x11-libs/libXfont < 1.2.7-r1 >= 1.2.7-r1 ------------------------------------------------------------------- 2 affected packages on all of their supported architectures. -------------------------------------------------------------------
Description ===========
The libXfont code is prone to several integer overflows, in functions ProcXCMiscGetXIDList(), bdfReadCharacters() and FontFileInitTable(). TightVNC contains a local copy of this code and is also affected.
Impact ======
A local attacker could use a specially crafted BDF Font to gain root privileges on the vulnerable host.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All libXfont users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=x11-libs/libXfont-1.2.7-r1"
All TightVNC users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/tightvnc-1.2.9-r4"
References ==========
[ 1 ] CVE-2007-1003 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1003 [ 2 ] CVE-2007-1351 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1351 [ 3 ] CVE-2007-1352 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1352
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200705-10.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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