CVE-2013-1920

Description

From CVE.org

Xen 4.2.x, 4.1.x, and earlier, when the hypervisor is running "under memory pressure" and the Xen Security Module (XSM) is enabled, uses the wrong ordering of operations when extending the per-domain event channel tracking table, which causes a use-after-free and allows local guest kernels to inject arbitrary events and gain privileges via unspecified vectors.

Statement

Not vulnerable.

This issue did not affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5.

This issue did not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG as we did not have support for Xen hypervisor.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v2 Score Breakdown

Red HatNVDcve.org
Base Score6.54.4N/A
Attack VectorAdjacent NetworkLocalN/A
Access ComplexityHighMediumN/A
AuthenticationSingleNoneN/A
Confidentiality ImpactCompletePartialN/A
Integrity ImpactCompletePartialN/A
Availability ImpactCompletePartialN/A

Vector

Red Hat: AV:A/AC:H/Au:S/C:C/I:C/A:C

NVD: AV:L/AC:M/Au:N/C:P/I:P/A:P

Acknowledgements

Red Hat would like to thank Xen project for reporting this issue.

Frequently Asked Questions

Not sure what something means? Check out our Security Glossary.

Want to get errata notifications? Sign up here.