Xen mov_to_rr RID Local Security Bypass Vulnerability

BID:26716

Info

Xen mov_to_rr RID Local Security Bypass Vulnerability

Bugtraq ID: 26716
Class: Input Validation Error
CVE: CVE-2007-6207
Remote: No
Local: Yes
Published: Dec 05 2007 12:00AM
Updated: Mar 13 2008 02:41AM
Credit: The vendor disclosed this issue.
Vulnerable: XenSource Xen 3.1.1
XenSource Xen 3.0.3
XenSource Xen 3.0
Redhat Enterprise Linux Desktop 5 client
Redhat Enterprise Linux 5 Server
Not Vulnerable: XenSource Xen 3.1.2

Discussion

Xen mov_to_rr RID Local Security Bypass Vulnerability

Xen is prone to a local security-bypass vulnerability because it fails to validate user-supplied input.

Local attackers can leverage this issue to read memory from VT-i domains other than the one they have access to. This could allow attackers to obtain potentially sensitive information that could aid in further attacks.

Versions prior to Xen 3.1.2 on IA64 platforms are vulnerable.

Exploit / POC

Xen mov_to_rr RID Local Security Bypass Vulnerability

Currently we are not aware of any working exploits for this issue. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Solution / Fix

Xen mov_to_rr RID Local Security Bypass Vulnerability

Solution:
A patch is available in the vendor's Mercurial repository. Please see the references for more information.

References

Xen mov_to_rr RID Local Security Bypass Vulnerability

References:

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