drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mangelnde Eingabeprüfung in LibVNCServercode
Name: |
Mangelnde Eingabeprüfung in LibVNCServercode |
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ID: |
200608-12 |
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Distribution: |
Gentoo |
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Plattformen: |
Keine Angabe |
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Datum: |
Mo, 7. August 2006, 20:28 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2450
http://www.gentoo.org/security/en/glsa/glsa-200608-05.xml |
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Applikationen: |
x11vnc |
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Originalnachricht |
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200608-12 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High Title: x11vnc: Authentication bypass in included LibVNCServer code Date: August 07, 2006 Bugs: #142559 ID: 200608-12
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Synopsis ========
VNC servers created with x11vnc accept insecure protocol types, even when the server does not offer it, resulting in the possibility of unauthorized access to the server.
Background ==========
x11vnc provides VNC servers for X displays.
Affected packages =================
------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 x11-misc/x11vnc < 0.8.1 >= 0.8.1
Description ===========
x11vnc includes vulnerable LibVNCServer code, which fails to properly validate protocol types effectively letting users decide what protocol to use, such as "Type 1 - None" (GLSA-200608-05). x11vnc will accept this security type, even if it is not offered by the server.
Impact ======
An attacker could exploit this vulnerability to gain unauthorized access with the privileges of the user running the VNC server.
Workaround ==========
There is no known workaround at this time.
Resolution ==========
All x11vnc users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=x11-misc/x11vnc-0.8.1"
References ==========
[ 1 ] CVE-2006-2450 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2450 [ 2 ] GLSA-200608-05 http://www.gentoo.org/security/en/glsa/glsa-200608-05.xml
Availability ============
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200608-12.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 2006 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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