Mailinglist Archive: opensuse-security-announce (13 mails)

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[security-announce] SUSE Security Announcement: Linux kernel (SUSE-SA:2008:038)
  • From: Marcus Meissner <meissner@xxxxxxx>
  • Date: Tue, 29 Jul 2008 17:28:49 +0200
  • Message-id: <488f3731.cJvDs8QoxUtO+uE8%meissner@xxxxxxx>

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______________________________________________________________________________

SUSE Security Announcement

Package: kernel
Announcement ID: SUSE-SA:2008:038
Date: Tue, 29 Jul 2008 16:00:00 +0000
Affected Products: SLE SDK 10 SP2
SUSE Linux Enterprise Desktop 10 SP2
SUSE Linux Enterprise 10 SP2 DEBUGINFO
SUSE Linux Enterprise Server 10 SP2
Vulnerability Type: remote denial of service
Severity (1-10): 9
SUSE Default Package: yes
Cross-References: CVE-2008-1615, CVE-2008-1669, CVE-2008-1673
CVE-2008-2372, CVE-2008-2812, CVE-2008-2931
SUSE-SA:2008:035

Content of This Advisory:
1) Security Vulnerability Resolved:
Linux kernel security update
Problem Description
2) Solution or Work-Around
3) Special Instructions and Notes
4) Package Location and Checksums
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
See SUSE Security Summary Report.
6) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Problem Description and Brief Discussion

This is a respin of the previous Linux kernel update for SUSE Linux
Enterprise 10 SP2
as announced in SUSE-SA:2008:035, which got retracted due to an IDE-CDROM
regression,
where any IDE CDROM access would hang or crash the system. Only this problem
was fixed additionally.

The kernel version in this update is 2.6.16.60-0.27.

This kernel update fixes the following security problems:

CVE-2008-1615: On x86_64 a denial of service attack could be used by local
attackers to immediately panic / crash the machine.

CVE-2008-1669: Fixed a SMP ordering problem in fcntl_setlk could potentially
allow local attackers to execute code by timing file locking.

CVE-2008-2372: Fixed a resource starvation problem in the handling of ZERO
mmap pages.

CVE-2008-1673: The ASN1 implementation in (a) the Linux kernel, as used
in the cifs and ip_nat_snmp_basic modules does not properly validate
length values during decoding of ASN.1 BER data, which allows remote
attackers to cause a denial of service (crash) or execute arbitrary code
via (1) a length greater than the working buffer, which can lead to an
unspecified overflow; (2) an oid length of zero, which can lead to an
off-by-one error; or (3) an indefinite length for a primitive encoding.

CVE-2008-2812: Various tty / serial devices did not check function pointers
for NULL before calling them, leading to potential crashes or code execution.
The devices affected are usually only accessible by the root user though.

CVE-2008-2931: A missing permission check in mount changing was added
which could have been used by local attackers to change the mount directory.

Additionally a very large number of bugs was fixed. Details can be found
in the RPM changelog of the included packages.

OCFS2 has been upgraded to the 1.4.1 release:
- Endian fixes
- Use slab caches for DLM objects
- Export DLM state info to debugfs
- Avoid ENOSPC in rare conditions when free inodes are reserved by
other nodes
- Error handling fix in ocfs2_start_walk_page_trans()
- Cleanup lockres printing
- Allow merging of extents
- Fix to allow changing permissions of symlinks
- Merged local fixes upstream (no code change)

2) Solution or Work-Around

There is no known workaround, please install the update packages.

3) Special Instructions and Notes

Please reboot the machine after installing the updated kernel.

4) Package Location and Checksums

The preferred method for installing security updates is to use the YaST
Online Update (YOU) tool. YOU detects which updates are required and
automatically performs the necessary steps to verify and install them.
Alternatively, download the update packages for your distribution manually
and verify their integrity by the methods listed in Section 6 of this
announcement. Then install the packages using the command

rpm -Fhv <file.rpm>

to apply the update, replacing <file.rpm> with the filename of the
downloaded RPM package.

Our maintenance customers are notified individually. The packages are
offered for installation from the maintenance web:

SUSE Linux Enterprise Desktop 10 SP2 for AMD64 and Intel EM64T

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=9b665aac984a0b06dae395f7e6fc9e7e

SUSE Linux Enterprise 10 SP2 DEBUGINFO for IBM zSeries 64bit

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=de4dc78f4191d9ba1ae6524f737efd5d

SUSE Linux Enterprise 10 SP2 DEBUGINFO for IBM POWER

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=ee7e254f1ae1a2b7b1e639bc87c01179

SUSE Linux Enterprise 10 SP2 DEBUGINFO for IPF

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=bc1f88632515826f7b9f2f43cddfbe8e

SUSE Linux Enterprise Server 10 SP2

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=9b665aac984a0b06dae395f7e6fc9e7e

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=de4dc78f4191d9ba1ae6524f737efd5d

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=ee7e254f1ae1a2b7b1e639bc87c01179

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=bc1f88632515826f7b9f2f43cddfbe8e

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=16c9561173f6bcfccc30161da1dcd208

SLE SDK 10 SP2

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=9b665aac984a0b06dae395f7e6fc9e7e

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=ee7e254f1ae1a2b7b1e639bc87c01179

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=bc1f88632515826f7b9f2f43cddfbe8e

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=16c9561173f6bcfccc30161da1dcd208

SUSE Linux Enterprise 10 SP2 DEBUGINFO

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=9b665aac984a0b06dae395f7e6fc9e7e

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=ee7e254f1ae1a2b7b1e639bc87c01179

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=bc1f88632515826f7b9f2f43cddfbe8e

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=16c9561173f6bcfccc30161da1dcd208

SUSE Linux Enterprise Desktop 10 SP2

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=9b665aac984a0b06dae395f7e6fc9e7e

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=16c9561173f6bcfccc30161da1dcd208

SUSE Linux Enterprise Desktop 10 SP2 for x86

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=16c9561173f6bcfccc30161da1dcd208

______________________________________________________________________________

5) Pending Vulnerabilities, Solutions, and Work-Arounds:

See SUSE Security Summary Report.
______________________________________________________________________________

6) Authenticity Verification and Additional Information

- Announcement authenticity verification:

SUSE security announcements are published via mailing lists and on Web
sites. The authenticity and integrity of a SUSE security announcement is
guaranteed by a cryptographic signature in each announcement. All SUSE
security announcements are published with a valid signature.

To verify the signature of the announcement, save it as text into a file
and run the command

gpg --verify <file>

replacing <file> with the name of the file where you saved the
announcement. The output for a valid signature looks like:

gpg: Signature made <DATE> using RSA key ID 3D25D3D9
gpg: Good signature from "SuSE Security Team <security@xxxxxxx>"

where <DATE> is replaced by the date the document was signed.

If the security team's key is not contained in your key ring, you can
import it from the first installation CD. To import the key, use the
command

gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc

- Package authenticity verification:

SUSE update packages are available on many mirror FTP servers all over the
world. While this service is considered valuable and important to the free
and open source software community, the authenticity and the integrity of
a package needs to be verified to ensure that it has not been tampered
with.

The internal rpm package signatures provide an easy way to verify the
authenticity of an RPM package. Use the command

rpm -v --checksig <file.rpm>

to verify the signature of the package, replacing <file.rpm> with the
filename of the RPM package downloaded. The package is unmodified if it
contains a valid signature from build@xxxxxxx with the key ID 9C800ACA.

This key is automatically imported into the RPM database (on
RPMv4-based distributions) and the gpg key ring of 'root' during
installation. You can also find it on the first installation CD and at
the end of this announcement.

- SUSE runs two security mailing lists to which any interested party may
subscribe:

opensuse-security@xxxxxxxxxxxx
- General Linux and SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an e-mail to
<opensuse-security+subscribe@xxxxxxxxxxxx>.

opensuse-security-announce@xxxxxxxxxxxx
- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an e-mail to
<opensuse-security-announce+subscribe@xxxxxxxxxxxx>.

=====================================================================
SUSE's security contact is <security@xxxxxxxx> or <security@xxxxxxx>.
The <security@xxxxxxx> public key is listed below.
=====================================================================
______________________________________________________________________________

The information in this advisory may be distributed or reproduced,
provided that the advisory is not modified in any way. In particular, the
clear text signature should show proof of the authenticity of the text.

SUSE Linux Products GmbH provides no warranties of any kind whatsoever
with respect to the information contained in this security advisory.

Type Bits/KeyID Date User ID
pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team <security@xxxxxxx>
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@xxxxxxx>

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