Red Hat Xen MMIO Instruction Decoder Local Guest Denial Of Service Vulnerability

BID:39979

Info

Red Hat Xen MMIO Instruction Decoder Local Guest Denial Of Service Vulnerability

Bugtraq ID: 39979
Class: Input Validation Error
CVE: CVE-2010-0730
Remote: No
Local: Yes
Published: May 06 2010 12:00AM
Updated: Feb 11 2011 05:19PM
Credit: Paolo Bonzini
Vulnerable: VMWare ESX Server 4.1
VMWare ESX Server 4.0
RedHat Enterprise Linux 5 server
Red Hat Enterprise Linux Desktop 5 client
Avaya Voice Portal 5.0 SP2
Avaya Voice Portal 5.0 SP1
Avaya Voice Portal 5.0
Avaya IQ 4.1
Avaya IQ 5
Avaya Aura System Platform 1.1
Avaya Aura System Manager 5.2
Avaya Aura Session Manager 5.2
Avaya Aura Session Manager 1.1
Avaya Aura Communication Manager 5.2
+ Avaya Communication Manager Server DEFINITY Server SI/CS
+ Avaya Communication Manager Server S8100
+ Avaya Communication Manager Server S8300
+ Avaya Communication Manager Server S8500
+ Avaya Communication Manager Server S8700
Avaya Aura Application Enablement Services 5.2
Not Vulnerable: VMWare ESX Server 4.1 ESX410-201101201

Discussion

Red Hat Xen MMIO Instruction Decoder Local Guest Denial Of Service Vulnerability

Red Hat Xen is prone to a denial-of-service vulnerability because of an error in the memory-mapped I/O (MMIO) decoder implementation.

An attacker in the guest operating system can exploit this issue to cause the guest to crash, by using the hypervisor to emulate the affected MMIO instruction. Successful attacks will result in a denial-of-service condition in the guest.

This issue affects 32 bit guests on the Xen implementation for Red Hat Enterprise Linux 5.

Exploit / POC

Red Hat Xen MMIO Instruction Decoder Local Guest 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].

Solution / Fix

Red Hat Xen MMIO Instruction Decoder Local Guest Denial Of Service Vulnerability

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

References

Red Hat Xen MMIO Instruction Decoder Local Guest Denial Of Service Vulnerability

References:
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