Public Date:
CWE-391 -> CWE-212 -> CWE-200
1009598: CVE-2013-4355 Kernel: Xen: Xsa-63: information leak via I/O instruction emulation

The MITRE CVE dictionary describes this issue as:

Xen 4.3.x and earlier does not properly handle certain errors, which allows local HVM guests to obtain hypervisor stack memory via a (1) port or (2) memory mapped I/O write or (3) other unspecified operations related to addresses without associated memory.

Find out more about CVE-2013-4355 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue does affect the version of the kernel-xen package as shipped with Red Hat Enterprise Linux 5. This issue does 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

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 2.3
Base Metrics AV:A/AC:M/Au:S/C:P/I:N/A:N
Access Vector Adjacent Network
Access Complexity Medium
Authentication Single
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None

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-2013:1790 2013-12-05

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 kernel-xen Affected


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