Xen 'arch_set_info_guest()' Local Denial Of Service Vulnerability

Bugtraq ID:	46901
Class:	Input Validation Error
CVE:
Remote:	No
Local:	Yes
Published:	Mar 14 2011 12:00AM
Updated:	Jun 10 2011 05:30PM
Credit:	Jan Beulich
Vulnerable:	XenSource Xen 3.3.1 XenSource Xen 3.3 XenSource Xen 3.2 XenSource Xen 3.1.2 XenSource Xen 3.1.1 XenSource Xen 3.0.3 XenSource Xen 4.0 XenSource Xen 3.0 OpenVZ Project OpenVZ 028stab089.1 OpenVZ Project OpenVZ 028stab085.2 OpenVZ Project OpenVZ 028stab081.1
Not Vulnerable:	OpenVZ Project OpenVZ 028stab091.1

Xen 'arch_set_info_guest()' Local Denial Of Service Vulnerability

Xen is prone to a denial-of-service vulnerability.

An attacker with access to a guest operating system can exploit this issue to crash the host operating system, effectively denying service to legitimate users.

Xen 'arch_set_info_guest()' Local Denial Of Service Vulnerability

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

Xen 'arch_set_info_guest()' Local Denial Of Service Vulnerability

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

Xen 'arch_set_info_guest()' Local Denial Of Service Vulnerability

References:

• Bug 679344 - VUL-0: Xen: multi-vCPU pv guest may crash host (Novell)
  
• changeset 21461: staging/xen-4.0-testing.hg (XenSource)
  
• changeset 23034: staging/xen-unstable.hg (XenSource)
  
• Download/kernel/rhel5/028stab091.1 (OpenVZ)
  
• OpenVZ Homepage (OpenVZ)
  
• XenSource Homepage (XenSource)