Rapid7 Vulnerability & Exploit Database

RHSA-2007:0323: xen security update

Back to Search

RHSA-2007:0323: xen security update

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
05/02/2007
Created
07/25/2018
Added
11/26/2007
Modified
07/04/2017

Description

An updated Xen package to fix multiple security issues is now available for Red Hat Enterprise Linux 5. This update has been rated as having important security impact by the Red Hat Security Response Team.

The Xen package contains the tools for managing the virtual machine monitor in Red Hat Enterprise Linux virtualization. The following security flaws are fixed in the updated Xen package: Joris van Rantwijk found a flaw in the Pygrub utility which is used as a boot loader for guest domains. A malicious local administrator of a guest domain could create a carefully crafted grub.conf file which would trigger the execution of arbitrary code outside of that domain. (CVE-2007-4993) Tavis Ormandy discovered a heap overflow flaw during video-to-video copy operations in the Cirrus VGA extension code used in Xen. A malicious local administrator of a guest domain could potentially trigger this flaw and execute arbitrary code outside of the domain. (CVE-2007-1320) Tavis Ormandy discovered insufficient input validation leading to a heap overflow in the Xen NE2000 network driver. If the driver is in use, a malicious local administrator of a guest domain could potentially trigger this flaw and execute arbitrary code outside of the domain. Xen does not use this driver by default. (CVE-2007-1321) Users of Xen should update to these erratum packages containing backported patches which correct these issues.

Solution(s)

  • redhat-upgrade-xen
  • redhat-upgrade-xen-devel
  • redhat-upgrade-xen-libs

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;