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Old 05-13-2008, 12:29 PM
 
Default Important: xen security and bug fix update

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

================================================== ===================
Red Hat Security Advisory

Synopsis: Important: xen security and bug fix update
Advisory ID: RHSA-2008:0194-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0194.html
Issue date: 2008-05-13
CVE Names: CVE-2007-3919 CVE-2007-5730 CVE-2008-0928
CVE-2008-1943 CVE-2008-1944 CVE-2008-2004
================================================== ===================

1. Summary:

Updated xen packages that fix several security issues and a bug are 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. Description:

The xen packages contain tools for managing the virtual machine monitor in
Red Hat Virtualization.

These updated packages fix the following security issues:

Daniel P. Berrange discovered that the hypervisor's para-virtualized
framebuffer (PVFB) backend failed to validate the format of messages
serving to update the contents of the framebuffer. This could allow a
malicious user to cause a denial of service, or compromise the privileged
domain (Dom0). (CVE-2008-1944)

Markus Armbruster discovered that the hypervisor's para-virtualized
framebuffer (PVFB) backend failed to validate the frontend's framebuffer
description. This could allow a malicious user to cause a denial of
service, or to use a specially crafted frontend to compromise the
privileged domain (Dom0). (CVE-2008-1943)

Chris Wright discovered a security vulnerability in the QEMU block format
auto-detection, when running fully-virtualized guests. Such
fully-virtualized guests, with a raw formatted disk image, were able
to write a header to that disk image describing another format. This could
allow such guests to read arbitrary files in their hypervisor's host.
(CVE-2008-2004)

Ian Jackson discovered a security vulnerability in the QEMU block device
drivers backend. A guest operating system could issue a block device
request and read or write arbitrary memory locations, which could lead to
privilege escalation. (CVE-2008-0928)

Tavis Ormandy found that QEMU did not perform adequate sanity-checking of
data received via the "net socket listen" option. A malicious local
administrator of a guest domain could trigger this flaw to potentially
execute arbitrary code outside of the domain. (CVE-2007-5730)

Steve Kemp discovered that the xenbaked daemon and the XenMon utility
communicated via an insecure temporary file. A malicious local
administrator of a guest domain could perform a symbolic link attack,
causing arbitrary files to be truncated. (CVE-2007-3919)

As well, in the previous xen packages, it was possible for Dom0 to fail to
flush data from a fully-virtualized guest to disk, even if the guest
explicitly requested the flush. This could cause data integrity problems on
the guest. In these updated packages, Dom0 always respects the request to
flush to disk.

Users of xen are advised to upgrade to these updated packages, which
resolve 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. Bugs fixed (http://bugzilla.redhat.com/):

350421 - CVE-2007-3919 xen xenmon.py / xenbaked insecure temporary file accesss
360381 - CVE-2007-5730 QEMU Buffer overflow via crafted "net socket listen" option
433560 - CVE-2008-0928 Qemu insufficient block device address range checking
435495 - [RHEL5.2]: LTC41676-Xen full virt has data integrity issue
443078 - CVE-2008-1943 PVFB backend fails to validate frontend's framebuffer description
443390 - CVE-2008-1944 PVFB SDL backend chokes on bogus screen updates
444583 - CVE-2008-2004 qemu/kvm/xen: qemu block format auto-detection vulnerability

6. Package List:

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/xen-3.0.3-41.el5_1.5.src.rpm

i386:
xen-debuginfo-3.0.3-41.el5_1.5.i386.rpm
xen-libs-3.0.3-41.el5_1.5.i386.rpm

x86_64:
xen-debuginfo-3.0.3-41.el5_1.5.i386.rpm
xen-debuginfo-3.0.3-41.el5_1.5.x86_64.rpm
xen-libs-3.0.3-41.el5_1.5.i386.rpm
xen-libs-3.0.3-41.el5_1.5.x86_64.rpm

RHEL Desktop Multi OS (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/xen-3.0.3-41.el5_1.5.src.rpm

i386:
xen-3.0.3-41.el5_1.5.i386.rpm
xen-debuginfo-3.0.3-41.el5_1.5.i386.rpm
xen-devel-3.0.3-41.el5_1.5.i386.rpm

x86_64:
xen-3.0.3-41.el5_1.5.x86_64.rpm
xen-debuginfo-3.0.3-41.el5_1.5.i386.rpm
xen-debuginfo-3.0.3-41.el5_1.5.x86_64.rpm
xen-devel-3.0.3-41.el5_1.5.i386.rpm
xen-devel-3.0.3-41.el5_1.5.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/xen-3.0.3-41.el5_1.5.src.rpm

i386:
xen-debuginfo-3.0.3-41.el5_1.5.i386.rpm
xen-libs-3.0.3-41.el5_1.5.i386.rpm

ia64:
xen-debuginfo-3.0.3-41.el5_1.5.ia64.rpm
xen-libs-3.0.3-41.el5_1.5.ia64.rpm

x86_64:
xen-debuginfo-3.0.3-41.el5_1.5.i386.rpm
xen-debuginfo-3.0.3-41.el5_1.5.x86_64.rpm
xen-libs-3.0.3-41.el5_1.5.i386.rpm
xen-libs-3.0.3-41.el5_1.5.x86_64.rpm

RHEL Virtualization (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/xen-3.0.3-41.el5_1.5.src.rpm

i386:
xen-3.0.3-41.el5_1.5.i386.rpm
xen-debuginfo-3.0.3-41.el5_1.5.i386.rpm
xen-devel-3.0.3-41.el5_1.5.i386.rpm

ia64:
xen-3.0.3-41.el5_1.5.ia64.rpm
xen-debuginfo-3.0.3-41.el5_1.5.ia64.rpm
xen-devel-3.0.3-41.el5_1.5.ia64.rpm

x86_64:
xen-3.0.3-41.el5_1.5.x86_64.rpm
xen-debuginfo-3.0.3-41.el5_1.5.i386.rpm
xen-debuginfo-3.0.3-41.el5_1.5.x86_64.rpm
xen-devel-3.0.3-41.el5_1.5.i386.rpm
xen-devel-3.0.3-41.el5_1.5.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-2007-3919
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5730
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0928
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1943
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1944
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2004
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 2008 Red Hat, Inc.
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Old 10-01-2008, 05:36 PM
 
Default Important: xen security and bug fix update

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

================================================== ===================
Red Hat Security Advisory

Synopsis: Important: xen security and bug fix update
Advisory ID: RHSA-2008:0892-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0892.html
Issue date: 2008-10-01
CVE Names: CVE-2008-1945 CVE-2008-1952
================================================== ===================

1. Summary:

Updated xen packages that resolve a couple of security issues and fix a bug
are 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. Description:

The xen packages contain tools for managing the virtual machine monitor in
Red Hat Virtualization.

It was discovered that the hypervisor's para-virtualized framebuffer (PVFB)
backend failed to validate the frontend's framebuffer description properly.
This could allow a privileged user in the unprivileged domain (DomU) to
cause a denial of service, or, possibly, elevate privileges to the
privileged domain (Dom0). (CVE-2008-1952)

A flaw was found in the QEMU block format auto-detection, when running
fully-virtualized guests and using Qemu images written on removable media
(USB storage, 3.5" disks). Privileged users of such fully-virtualized
guests (DomU), with a raw-formatted disk image, were able to write a header
to that disk image describing another format. This could allow such guests
to read arbitrary files in their hypervisor's host (Dom0). (CVE-2008-1945)

Additionally, the following bug is addressed in this update:

* The qcow-create command terminated when invoked due to glibc bounds
checking on the realpath() function.

Users of xen are advised to upgrade to these updated packages, which
resolve these security issues and fix this bug.

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. Bugs fixed (http://bugzilla.redhat.com/):

445844 - CVE-2008-1945 qemu/kvm/xen: add image format options for USB storage and removable media
447759 - CVE-2008-1952 qemu/xen/kvm: ioemu: Fix PVFB backend to limit frame buffer size
454651 - xen: buffer overflow detected: qcow-create terminated

6. Package List:

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/xen-3.0.3-64.el5_2.3.src.rpm

i386:
xen-debuginfo-3.0.3-64.el5_2.3.i386.rpm
xen-libs-3.0.3-64.el5_2.3.i386.rpm

x86_64:
xen-debuginfo-3.0.3-64.el5_2.3.i386.rpm
xen-debuginfo-3.0.3-64.el5_2.3.x86_64.rpm
xen-libs-3.0.3-64.el5_2.3.i386.rpm
xen-libs-3.0.3-64.el5_2.3.x86_64.rpm

RHEL Desktop Multi OS (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/xen-3.0.3-64.el5_2.3.src.rpm

i386:
xen-3.0.3-64.el5_2.3.i386.rpm
xen-debuginfo-3.0.3-64.el5_2.3.i386.rpm
xen-devel-3.0.3-64.el5_2.3.i386.rpm

x86_64:
xen-3.0.3-64.el5_2.3.x86_64.rpm
xen-debuginfo-3.0.3-64.el5_2.3.i386.rpm
xen-debuginfo-3.0.3-64.el5_2.3.x86_64.rpm
xen-devel-3.0.3-64.el5_2.3.i386.rpm
xen-devel-3.0.3-64.el5_2.3.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/xen-3.0.3-64.el5_2.3.src.rpm

i386:
xen-debuginfo-3.0.3-64.el5_2.3.i386.rpm
xen-libs-3.0.3-64.el5_2.3.i386.rpm

ia64:
xen-debuginfo-3.0.3-64.el5_2.3.ia64.rpm
xen-libs-3.0.3-64.el5_2.3.ia64.rpm

x86_64:
xen-debuginfo-3.0.3-64.el5_2.3.i386.rpm
xen-debuginfo-3.0.3-64.el5_2.3.x86_64.rpm
xen-libs-3.0.3-64.el5_2.3.i386.rpm
xen-libs-3.0.3-64.el5_2.3.x86_64.rpm

RHEL Virtualization (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/xen-3.0.3-64.el5_2.3.src.rpm

i386:
xen-3.0.3-64.el5_2.3.i386.rpm
xen-debuginfo-3.0.3-64.el5_2.3.i386.rpm
xen-devel-3.0.3-64.el5_2.3.i386.rpm

ia64:
xen-3.0.3-64.el5_2.3.ia64.rpm
xen-debuginfo-3.0.3-64.el5_2.3.ia64.rpm
xen-devel-3.0.3-64.el5_2.3.ia64.rpm

x86_64:
xen-3.0.3-64.el5_2.3.x86_64.rpm
xen-debuginfo-3.0.3-64.el5_2.3.i386.rpm
xen-debuginfo-3.0.3-64.el5_2.3.x86_64.rpm
xen-devel-3.0.3-64.el5_2.3.i386.rpm
xen-devel-3.0.3-64.el5_2.3.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-2008-1945
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1952
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 2008 Red Hat, Inc.
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Old 03-07-2012, 01:43 PM
 
Default Important: xen security and bug fix update

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

================================================== ===================
Red Hat Security Advisory

Synopsis: Important: xen security and bug fix update
Advisory ID: RHSA-2012:0370-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0370.html
Issue date: 2012-03-07
CVE Names: CVE-2012-0029
================================================== ===================

1. Summary:

Updated xen packages that fix one security issue and two bugs are now
available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System (CVSS)
base score, which gives a detailed severity rating, is available from the
CVE link in the References section.

2. Relevant releases/architectures:

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

3. Description:

The xen packages contain administration tools and the xend service for
managing the kernel-xen kernel for virtualization on Red Hat Enterprise
Linux.

A heap overflow flaw was found in the way QEMU emulated the e1000 network
interface card. A privileged guest user in a virtual machine whose network
interface is configured to use the e1000 emulated driver could use this
flaw to crash QEMU or, possibly, escalate their privileges on the host.
(CVE-2012-0029)

Red Hat would like to thank Nicolae Mogoreanu for reporting this issue.

This update also fixes the following bugs:

* Adding support for jumbo frames introduced incorrect network device
expansion when a bridge is created. The expansion worked correctly with the
default configuration, but could have caused network setup failures when a
user-defined network script was used. This update changes the expansion so
network setup will not fail, even when a user-defined network script is
used. (BZ#797191)

* A bug was found in xenconsoled, the Xen hypervisor console daemon. If
timestamp logging for this daemon was enabled (using both the
XENCONSOLED_TIMESTAMP_HYPERVISOR_LOG and XENCONSOLED_TIMESTAMP_GUEST_LOG
options in "/etc/sysconfig/xend"), xenconsoled could crash if the guest
emitted a lot of information to its serial console in a short period of
time. Eventually, the guest would freeze after the console buffer was
filled due to the crashed xenconsoled. Timestamp logging is disabled by
default. (BZ#797836)

All xen users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. The system must be
rebooted for this update to take effect.

4. Solution:

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

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

5. Bugs fixed (http://bugzilla.redhat.com/):

772075 - CVE-2012-0029 qemu: e1000: process_tx_desc legacy mode packets heap overflow
797191 - xen-network-common.sh scripting typo

6. Package List:

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

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/xen-3.0.3-135.el5_8.2.src.rpm

i386:
xen-debuginfo-3.0.3-135.el5_8.2.i386.rpm
xen-libs-3.0.3-135.el5_8.2.i386.rpm

x86_64:
xen-debuginfo-3.0.3-135.el5_8.2.i386.rpm
xen-debuginfo-3.0.3-135.el5_8.2.x86_64.rpm
xen-libs-3.0.3-135.el5_8.2.i386.rpm
xen-libs-3.0.3-135.el5_8.2.x86_64.rpm

RHEL Desktop Multi OS (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/xen-3.0.3-135.el5_8.2.src.rpm

i386:
xen-3.0.3-135.el5_8.2.i386.rpm
xen-debuginfo-3.0.3-135.el5_8.2.i386.rpm
xen-devel-3.0.3-135.el5_8.2.i386.rpm

x86_64:
xen-3.0.3-135.el5_8.2.x86_64.rpm
xen-debuginfo-3.0.3-135.el5_8.2.i386.rpm
xen-debuginfo-3.0.3-135.el5_8.2.x86_64.rpm
xen-devel-3.0.3-135.el5_8.2.i386.rpm
xen-devel-3.0.3-135.el5_8.2.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/xen-3.0.3-135.el5_8.2.src.rpm

i386:
xen-debuginfo-3.0.3-135.el5_8.2.i386.rpm
xen-libs-3.0.3-135.el5_8.2.i386.rpm

ia64:
xen-debuginfo-3.0.3-135.el5_8.2.ia64.rpm
xen-libs-3.0.3-135.el5_8.2.ia64.rpm

x86_64:
xen-debuginfo-3.0.3-135.el5_8.2.i386.rpm
xen-debuginfo-3.0.3-135.el5_8.2.x86_64.rpm
xen-libs-3.0.3-135.el5_8.2.i386.rpm
xen-libs-3.0.3-135.el5_8.2.x86_64.rpm

RHEL Virtualization (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/xen-3.0.3-135.el5_8.2.src.rpm

i386:
xen-3.0.3-135.el5_8.2.i386.rpm
xen-debuginfo-3.0.3-135.el5_8.2.i386.rpm
xen-devel-3.0.3-135.el5_8.2.i386.rpm

ia64:
xen-3.0.3-135.el5_8.2.ia64.rpm
xen-debuginfo-3.0.3-135.el5_8.2.ia64.rpm
xen-devel-3.0.3-135.el5_8.2.ia64.rpm

x86_64:
xen-3.0.3-135.el5_8.2.x86_64.rpm
xen-debuginfo-3.0.3-135.el5_8.2.i386.rpm
xen-debuginfo-3.0.3-135.el5_8.2.x86_64.rpm
xen-devel-3.0.3-135.el5_8.2.i386.rpm
xen-devel-3.0.3-135.el5_8.2.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://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2012-0029.html
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2012 Red Hat, Inc.
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