Mailinglist Archive: opensuse-security-announce (12 mails)

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[security-announce] SUSE Security Announcement: Linux kernel (SUSE-SA:2009:056)
  • From: Marcus Meissner <meissner@xxxxxxx>
  • Date: Mon, 16 Nov 2009 13:03:36 +0100
  • Message-id: <4b013f98.RO+wFgYgOzdh62DY%meissner@xxxxxxx>

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______________________________________________________________________________

SUSE Security Announcement

Package: kernel
Announcement ID: SUSE-SA:2009:056
Date: Mon, 16 Nov 2009 13:00:00 +0000
Affected Products: SUSE SLES 9
Novell Linux Desktop 9
Novell Linux POS 9
Vulnerability Type: local privilege escalation
Severity (1-10): 7
SUSE Default Package: yes
Cross-References: CVE-2009-1192, CVE-2009-1633, CVE-2009-2848
CVE-2009-2909, CVE-2009-2910, CVE-2009-3002
CVE-2009-3547, CVE-2009-3726

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

Several security issues and some bugs were fixed in the SUSE Linux
Enterprise 9 kernel.

Following security bugs were fixed:
CVE-2009-3547: A race condition in the pipe(2) system call could be
used by local attackers to execute code and escalate privileges.

CVE-2009-2910: On x86_64 systems a information leak of high register
contents (upper 32bit) was fixed.

CVE-2009-1192: The (1) agp_generic_alloc_page and (2)
agp_generic_alloc_pages functions in drivers/char/agp/generic.c in
the agp subsystem in the Linux kernel do not zero out pages that may
later be available to a user-space process, which allows local users
to obtain sensitive information by reading these pages.

CVE-2009-2909: Unsigned check in the ax25 socket handler could allow
local attackers to potentially crash the kernel or even execute code.

CVE-2009-2848: The execve function in the Linux kernel did not properly
clear the current->clear_child_tid pointer, which allows local
users to cause a denial of service (memory corruption) or possibly
gain privileges via a clone system call with CLONE_CHILD_SETTID or
CLONE_CHILD_CLEARTID enabled, which is not properly handled during
thread creation and exit.

CVE-2009-3002: Fixed various socket handler getname leaks, which
could disclose memory previously used by the kernel or other userland
processes to the local attacker.

CVE-2009-1633: Multiple buffer overflows in the cifs subsystem in the
Linux kernel allow remote CIFS servers to cause a denial of service
(memory corruption) and possibly have unspecified other impact via (1)
a malformed Unicode string, related to Unicode string area alignment
in fs/cifs/sess.c; or (2) long Unicode characters, related to
fs/cifs/cifssmb.c and the cifs_readdir function in fs/cifs/readdir.c.

CVE-2009-3726: The nfs4_proc_lock function in fs/nfs/nfs4proc.c in
the NFSv4 client in the allows remote NFS servers to cause a denial
of service (NULL pointer dereference and panic) by sending a certain
response containing incorrect file attributes, which trigger attempted
use of an open file that lacks NFSv4 state.

For a complete list of changes, please refer to the RPM changelog.

2) Solution or Work-Around

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

3) Special Instructions and Notes

Reboot the machine after installing the update.

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 CORE 9 for IBM zSeries 64bit

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=77ed33379952aaf1e23ae495aab9c221

SUSE CORE 9 for IBM S/390 31bit

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=51eb79501b8e03bf515dafcfc5d912b0

SUSE CORE 9 for AMD64 and Intel EM64T

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=b26c54164a036ab3b436997e2b5c5874

SUSE CORE 9 for IBM POWER

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=8d6ae4279786eaab2134168e22490f95

SUSE CORE 9 for Itanium Processor Family

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=7647ad06193e496ce89cc593ea9d19da

Novell Linux POS 9

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=66a3e66c695dceba429e6e5538741b7d

SUSE SLES 9

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=77ed33379952aaf1e23ae495aab9c221

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=51eb79501b8e03bf515dafcfc5d912b0

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=b26c54164a036ab3b436997e2b5c5874

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=8d6ae4279786eaab2134168e22490f95

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=7647ad06193e496ce89cc593ea9d19da

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=66a3e66c695dceba429e6e5538741b7d

SUSE CORE 9 for x86

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=66a3e66c695dceba429e6e5538741b7d

Novell Linux Desktop 9

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=1f8052e3d1888101d98fed2d234ab541

Novell Linux Desktop 9 for x86_64

http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=1f8052e3d1888101d98fed2d234ab541

______________________________________________________________________________

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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