TigerVNC SSL Certificate Validation Security Bypass Vulnerability

BID:47738

Info

TigerVNC SSL Certificate Validation Security Bypass Vulnerability

Bugtraq ID: 47738
Class: Design Error
CVE: CVE-2011-1775
Remote: Yes
Local: No
Published: May 04 2011 12:00AM
Updated: Apr 13 2015 09:35PM
Credit: Brian Hinz
Vulnerable: TigerVNC TigerVNC 1.1.0
Red Hat Enterprise Linux Workstation Optional 6
Red Hat Enterprise Linux Workstation 6
Red Hat Enterprise Linux Server Optional 6
Red Hat Enterprise Linux Server 6
Red Hat Enterprise Linux HPC Node Optional 6
Red Hat Enterprise Linux Desktop Optional 6
Red Hat Enterprise Linux Desktop 6
Not Vulnerable:

Discussion

TigerVNC SSL Certificate Validation Security Bypass Vulnerability

TigerVNC is prone to a security-bypass vulnerability because the application fails to properly validate SSL certificates from the server.

Successfully exploiting this issue allows attackers to perform man-in-the-middle attacks or impersonate trusted servers, which will aid in further attacks.

Exploit / POC

TigerVNC SSL Certificate Validation Security Bypass Vulnerability

An attacker can use readily available network utilities to exploit this issue.

Solution / Fix

TigerVNC SSL Certificate Validation Security Bypass Vulnerability

Solution:
Updates are available. Please see the references for more information.

References

TigerVNC SSL Certificate Validation Security Bypass Vulnerability

References:

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