CVE Database

CVE-2013-4554

Impact: Moderate
Public: 2013-11-26
Bugzilla: 1029111: CVE-2013-4554 kernel: xen: hypercalls exposed to privilege rings 1 and 2 of HVM guests

Details

The MITRE CVE dictionary describes this issue as:

Xen 3.0.3 through 4.1.x (possibly 4.1.6.1), 4.2.x (possibly 4.2.3), and 4.3.x (possibly 4.3.1) does not properly prevent access to hypercalls, which allows local guest users to gain privileges via a crafted application running in ring 1 or 2.

Find out more about CVE-2013-4554 from the MITRE CVE dictionary and NIST NVD.

Statement

This issue did affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5, however please note that none of the guest operating system supported in Red Hat Enterprise Linux 5 are using the vulnerable set of rings of protection for privilege separation.
This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG as we did not have support for Xen hypervisor.

CVSS v2 metrics

Base Score: 6
Base Metrics: AV:L/AC:H/Au:S/C:C/I:C/A:C
Access Vector: Local
Access Complexity: High
Authentication: Single Instance
Confidentiality Impact: Complete
Integrity Impact: Complete
Availability Impact: Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
Red Hat Enterprise Linux version 5 (kernel) RHSA-2014:0285 March 12, 2014

External References

Acknowledgements

Red Hat would like to thank the Xen project for reporting this issue. Upstream acknowledges Jan Beulich as the original reporter.

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.