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Insecure Library Loading
Moderately critical

QEMU Empty VNC Password Authentication Bypass Security Issue

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Release Date:  2011-02-07    Views:  2,568

Secunia Advisory SA42830

Where:

From remote

Impact:

Security Bypass

Solution Status:

Unpatched

Software:

CVE Reference(s):

Description


A security issue has been reported in QEMU, which can be exploited by malicious people to bypass certain security restrictions.

The security issue is caused due to QEMU incorrectly disabling the authentication if an empty VNC password is set, which can be exploited to e.g. access the VNC service.


Solution:
Do not set empty VNC passwords.

Provided and/or discovered by:
Reported in an Ubuntu bug by Neil Wilson.

Original Advisory:
Ubuntu Bug #697197:
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/697197

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: QEMU Empty VNC Password Authentication Bypass Security Issue

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