A new update is available for Red Hat Enterprise Linux. Here the announcement:

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Red Hat Security Advisory

Synopsis: Important: xen security update
Advisory ID: RHSA-2007:0114-02
Advisory URL: https://rhn.redhat.com/errata/RHSA-2007-0114.html
Issue date: 2007-03-14
Updated on: 2007-03-14
Product: Red Hat Enterprise Linux
Keywords: xen qemu console ia64 VTi
CVE Names: CVE-2007-0998
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1. Summary:

An updated Xen package to fix one security issue and two bugs 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.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
RHEL Desktop Multi OS (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, x86_64
RHEL Virtualization (v. 5 server) - i386, ia64, x86_64

3. Problem description:

The Xen package contains the tools for managing the virtual machine monitor
in Red Hat Enterprise Linux virtualization.

A flaw was found affecting the VNC server code in QEMU. On a
fullyvirtualized guest VM, where qemu monitor mode is enabled, a user who
had access to the VNC server could gain the ability to read arbitrary files
as root in the host filesystem. (CVE-2007-0998)

In addition to disabling qemu monitor mode, the following bugs were also fixed:

* Fix IA64 fully virtualized (VTi) shadow page table mode initialization.

* Fix network bonding in balanced-rr mode. Without this update, a network
path loss could result in packet loss.

Users of Xen should update to these erratum packages containing backported
patches which correct these issues.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

5. Bug IDs fixed (http://bugzilla.redhat.com/):

230295 - CVE-2007-0998 HVM guest VNC server allows compromise of entire host OS by any VNC console user

6. RPMs required:

Red Hat Enterprise Linux Desktop (v. 5 client):

SRPMS:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/xen-3.0.3-25.0.3.el5.src.rpm
21c113a6005f92e634de2e81e75d8f8b xen-3.0.3-25.0.3.el5.src.rpm

i386:
e2054068563042541dac3604ef38f736 xen-debuginfo-3.0.3-25.0.3.el5.i386.rpm
92f7eabd5a9a6f918d83141eb71c7593 xen-libs-3.0.3-25.0.3.el5.i386.rpm

x86_64:
e2054068563042541dac3604ef38f736 xen-debuginfo-3.0.3-25.0.3.el5.i386.rpm
84c732e30dc5967bdd80b270d79b7e21 xen-debuginfo-3.0.3-25.0.3.el5.x86_64.rpm
92f7eabd5a9a6f918d83141eb71c7593 xen-libs-3.0.3-25.0.3.el5.i386.rpm
c460c527934aa3270aa425c5dd15ca66 xen-libs-3.0.3-25.0.3.el5.x86_64.rpm

RHEL Desktop Multi OS (v. 5 client):

SRPMS:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/xen-3.0.3-25.0.3.el5.src.rpm
21c113a6005f92e634de2e81e75d8f8b xen-3.0.3-25.0.3.el5.src.rpm

i386:
572e398fbc504adaae182b3ba040920f xen-3.0.3-25.0.3.el5.i386.rpm
e2054068563042541dac3604ef38f736 xen-debuginfo-3.0.3-25.0.3.el5.i386.rpm
160836bd41a0d666fd7a6289f718c741 xen-devel-3.0.3-25.0.3.el5.i386.rpm

x86_64:
2d5a582377d3874bb25fcc75615cb27a xen-3.0.3-25.0.3.el5.x86_64.rpm
e2054068563042541dac3604ef38f736 xen-debuginfo-3.0.3-25.0.3.el5.i386.rpm
84c732e30dc5967bdd80b270d79b7e21 xen-debuginfo-3.0.3-25.0.3.el5.x86_64.rpm
160836bd41a0d666fd7a6289f718c741 xen-devel-3.0.3-25.0.3.el5.i386.rpm
2bac7c8ac7e7748385712eaf3755beaf xen-devel-3.0.3-25.0.3.el5.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

SRPMS:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/xen-3.0.3-25.0.3.el5.src.rpm
21c113a6005f92e634de2e81e75d8f8b xen-3.0.3-25.0.3.el5.src.rpm

i386:
e2054068563042541dac3604ef38f736 xen-debuginfo-3.0.3-25.0.3.el5.i386.rpm
92f7eabd5a9a6f918d83141eb71c7593 xen-libs-3.0.3-25.0.3.el5.i386.rpm

ia64:
7f26965bfa2b601ad1b34bb435c223a0 xen-debuginfo-3.0.3-25.0.3.el5.ia64.rpm
b18a6c8850c5a5253d96b02aab29cb7d xen-libs-3.0.3-25.0.3.el5.ia64.rpm

x86_64:
e2054068563042541dac3604ef38f736 xen-debuginfo-3.0.3-25.0.3.el5.i386.rpm
84c732e30dc5967bdd80b270d79b7e21 xen-debuginfo-3.0.3-25.0.3.el5.x86_64.rpm
92f7eabd5a9a6f918d83141eb71c7593 xen-libs-3.0.3-25.0.3.el5.i386.rpm
c460c527934aa3270aa425c5dd15ca66 xen-libs-3.0.3-25.0.3.el5.x86_64.rpm

RHEL Virtualization (v. 5 server):

SRPMS:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/xen-3.0.3-25.0.3.el5.src.rpm
21c113a6005f92e634de2e81e75d8f8b xen-3.0.3-25.0.3.el5.src.rpm

i386:
572e398fbc504adaae182b3ba040920f xen-3.0.3-25.0.3.el5.i386.rpm
e2054068563042541dac3604ef38f736 xen-debuginfo-3.0.3-25.0.3.el5.i386.rpm
160836bd41a0d666fd7a6289f718c741 xen-devel-3.0.3-25.0.3.el5.i386.rpm

ia64:
b9e42bf5e3afbd84b2e15b1aab7f502d xen-3.0.3-25.0.3.el5.ia64.rpm
7f26965bfa2b601ad1b34bb435c223a0 xen-debuginfo-3.0.3-25.0.3.el5.ia64.rpm
b36f6d2d4c0c8df85085ce10ba0e854f xen-devel-3.0.3-25.0.3.el5.ia64.rpm

x86_64:
2d5a582377d3874bb25fcc75615cb27a xen-3.0.3-25.0.3.el5.x86_64.rpm
e2054068563042541dac3604ef38f736 xen-debuginfo-3.0.3-25.0.3.el5.i386.rpm
84c732e30dc5967bdd80b270d79b7e21 xen-debuginfo-3.0.3-25.0.3.el5.x86_64.rpm
160836bd41a0d666fd7a6289f718c741 xen-devel-3.0.3-25.0.3.el5.i386.rpm
2bac7c8ac7e7748385712eaf3755beaf xen-devel-3.0.3-25.0.3.el5.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0998
http://www.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2007 Red Hat, Inc.
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