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Citrix XenServer Denial of Service and Privilege Escalation Vulnerabilities

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Release Date:  2012-09-06    Last Update:  2012-10-30    Views:  2,499

Secunia Advisory SA50530

Where:

Local system

Impact:

Privilege escalation, DoS

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Citrix has acknowledged some vulnerabilities in XenServer, which can be exploited by malicious, local users in a guest virtual machine to cause a DoS (Denial of Service) and gain escalated privileges.

For more information:
SA49789
SA50191
SA50472

1) An error in the VNC terminal emulator when handling certain escape sequences can be exploited by a guest VM to gain control of the Dom0 domain.

The vulnerabilities are reported in versions 6.0.2 and prior.


Solution:
Apply hotfixes.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1) James Forshaw, Context Information Security.

Original Advisory:
Citrix:
http://support.citrix.com/article/CTX134708

Context Information Security:
http://archives.neohapsis.com/archives/fulldisclosure/2012-10/0249.html

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: Citrix XenServer Denial of Service and Privilege Escalation Vulnerabilities

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