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TITLE:
Xen DomU HVM Disk Format Security Bypass

SECUNIA ADVISORY ID:
SA32063

VERIFY ADVISORY:
http://secunia.com/advisories/32063/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
Local system

SOFTWARE:
Xen 3.x
http://secunia.com/advisories/product/15863/

DESCRIPTION:
A vulnerability has been reported in Xen, which can be exploited by
malicious, local users in a DomU domain to bypass certain security
restrictions.

The vulnerability is caused due to the use of vulnerable QEMU code.
This can be exploited to e.g. read arbitrary files of the Dom0
domain.

Successful exploitation requires that the DomU domain is fully
virtualised (HVM).

For more information:
SA30111

SOLUTION:
Update to version 3.3.0.

PROVIDED AND/OR DISCOVERED BY:
Reported in QEMU by Avi Kivity.

OTHER REFERENCES:
SA30111:
http://secunia.com/advisories/30111/

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