Vulnerability Assessment & Network Security Forums



If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.


Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200608-12] x11vnc: Authentication bypass in included LibVNCServer code


Vulnerability Assessment Details

[GLSA-200608-12] x11vnc: Authentication bypass in included LibVNCServer code

Vulnerability Assessment Summary
x11vnc: Authentication bypass in included LibVNCServer code

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200608-12
(x11vnc: Authentication bypass in included LibVNCServer code)


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

A possible hacker could exploit this vulnerability to gain unauthorized
access with the rights of the user running the VNC server.

Workaround

There is no known workaround at this time.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2450
http://www.gentoo.org/security/en/glsa/glsa-200608-05.xml


Solution:
All x11vnc users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-misc/x11vnc-0.8.1"


Network Security Threat Level: High


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2006 Michel Arboi

Cables, Connectors

Intel E5-2650 v1 SR0KQ 2Ghz 8 core C2 VMware OK 95W Socket LGA 2011 Xeon CPU(S2)
$47.99
Intel E5-2650 v1 SR0KQ 2Ghz 8 core C2 VMware OK 95W Socket LGA 2011 Xeon CPU(S2) pictureDell PowerEdge R730 2x E5-2620v3 2.4GHz 6 Core 384GB 8x R-Series Trays H730 RAID
$5725.0
Dell PowerEdge R730 2x E5-2620v3 2.4GHz 6 Core 384GB 8x R-Series Trays H730 RAID picture1U Supermicro Server X9DRI-LN4F+ 2x Intel Xeon E5-2620 six Cores 24GB RAM RAILS
$459.95
1U Supermicro Server X9DRI-LN4F+ 2x Intel Xeon E5-2620 six Cores 24GB RAM RAILS pictureNEW DELL POWEREDGE T130 SERVER XEON Xeon E3-1225 v5 3.3GHz 4GB 1TB DVD-ROM
$499.0
NEW DELL POWEREDGE T130 SERVER XEON Xeon E3-1225 v5 3.3GHz 4GB 1TB DVD-ROM picture


Discussions

No Discussions have been posted on this vulnerability.