Xen HVMOP_pagetable_dying() denial of service
|xen-hvmop-dos (80025)||Medium Risk|
Xen is vulnerable to a denial of service, caused by the failure to properly check the caller?s pagetable state by the HVMOP_pagetable_dying() hypercall. A local attacker could exploit this vulnerability to cause the hypervisor to crash.
Denial of Service
Refer to Xen Security Advisory 23 (CVE-2012-4538) for patch, upgrade or suggested workaround information. See References.
For other distributions:
Apply the appropriate update for your system. See References.
- CTX135458: Citrix XenServer Multiple Security Updates .
- Xen Security Advisory 23 (CVE-2012-4538): Unhooking empty PAE entries DoS vulnerability.
- BID-56498: Xen Multiple Denial of Service Vulnerabilities
- CVE-2012-4538: The HVMOP_pagetable_dying hypercall in Xen 4.0, 4.1, and 4.2 does not properly check the pagetable state when running on shadow pagetables, which allows a local HVM guest OS to cause a denial of service (hypervisor crash) via unspecified vectors.
- DSA-2582: xen -- several vulnerabilities
- OSVDB ID: 87306: Xen HVMOP_pagetable_dying() Hypercall Caller Pagetable State Handling Local DoS
- SA51200: Xen Multiple Denial of Service Vulnerabilities
- SA51214: Citrix XenServer Multiple Denial of Service Vulnerabilities
- Citrix XenServer 5.0
- Citrix XenServer 5.5
- Citrix XenServer 5.6
- Citrix XenServer 6.0
- Citrix XenServer 6.1
- XenSource Xen 3.0
- XenSource Xen 4.1
- XenSource Xen 4.1.1
- XenSource Xen 4.1.2
Nov 13, 2012
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.