Mailinglist Archive: opensuse-security-announce (9 mails)

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[security-announce] SUSE Security Announcement: Linux kernel (SUSE-SA:2011:005)
  • From: Marcus Meissner <meissner@xxxxxxx>
  • Date: Tue, 25 Jan 2011 15:24:01 +0100
  • Message-id: <4d3edd01.ZhP+H5SOyxzh9/84%meissner@suse.de>

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______________________________________________________________________________

SUSE Security Announcement

Package: kernel
Announcement ID: SUSE-SA:2011:005
Date: Tue, 25 Jan 2011 11:00:00 +0000
Affected Products: SLE SDK 10 SP3
SUSE Linux Enterprise Desktop 10 SP3
SUSE Linux Enterprise Server 10 SP3
Vulnerability Type: local privilege escalation
CVSS v2 Base Score: 7.2 (AV:L/AC:L/Au:N/C:C/I:C/A:C)
SUSE Default Package: yes
Cross-References: CVE-2010-3699, CVE-2010-3848, CVE-2010-3849
CVE-2010-3850, CVE-2010-4160, CVE-2010-4258

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 kernel update for the SUSE Linux Enterprise 10 SP3 kernel fixes
several security issues and bugs.

Following security issues were fixed:
CVE-2010-4258: A local attacker could use a Oops (kernel crash) caused
by other flaws to write a 0 byte to a attacker controlled address
in the kernel. This could lead to privilege escalation together with
other issues.

CVE-2010-3699: The backend driver in Xen 3.x allows guest OS users to
cause a denial of service via a kernel thread leak, which prevents the
device and guest OS from being shut down or create a zombie domain,
causes a hang in zenwatch, or prevents unspecified xm commands from
working properly, related to (1) netback, (2) blkback, or (3) blktap.

CVE-2010-3849: The econet_sendmsg function in net/econet/af_econet.c
in the Linux kernel, when an econet address is configured, allowed
local users to cause a denial of service (NULL pointer dereference
and OOPS) via a sendmsg call that specifies a NULL value for the
remote address field.

CVE-2010-3848: Stack-based buffer overflow in the econet_sendmsg
function in net/econet/af_econet.c in the Linux kernel when an econet
address is configured, allowed local users to gain privileges by
providing a large number of iovec structures.

CVE-2010-3850: The ec_dev_ioctl function in net/econet/af_econet.c
in the Linux kernel did not require the CAP_NET_ADMIN capability,
which allowed local users to bypass intended access restrictions and
configure econet addresses via an SIOCSIFADDR ioctl call.

CVE-2010-4160: An overflow in sendto() and recvfrom() routines was
fixed that could be used by local attackers to potentially crash the
kernel using some socket families like L2TP.

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 update.

4) Package Location and Checksums

The preferred method for installing security updates is to use the YaST
"Online Update" module or the "zypper" commandline tool. The package and
patch management stack will detect which updates are required and
automatically perform 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 SP3 for AMD64 and Intel EM64T

http://download.novell.com/patch/finder/?keywords=f715eb6e5d39ac340637af52966bcd6e

SUSE Linux Enterprise Server 10 SP3

http://download.novell.com/patch/finder/?keywords=f715eb6e5d39ac340637af52966bcd6e

http://download.novell.com/patch/finder/?keywords=ae1877b162fdb5d16cb3a480414a7ce5

http://download.novell.com/patch/finder/?keywords=95d48e84e8843770d7b57f4005cf33bd

http://download.novell.com/patch/finder/?keywords=c18b1f136ef4e3baf765c9110ee8e8ef

http://download.novell.com/patch/finder/?keywords=8b70aa4d05f245a4b664290a8bf4da13

SLE SDK 10 SP3

http://download.novell.com/patch/finder/?keywords=f715eb6e5d39ac340637af52966bcd6e

http://download.novell.com/patch/finder/?keywords=95d48e84e8843770d7b57f4005cf33bd

http://download.novell.com/patch/finder/?keywords=c18b1f136ef4e3baf765c9110ee8e8ef

http://download.novell.com/patch/finder/?keywords=8b70aa4d05f245a4b664290a8bf4da13

SUSE Linux Enterprise Desktop 10 SP3

http://download.novell.com/patch/finder/?keywords=f715eb6e5d39ac340637af52966bcd6e

http://download.novell.com/patch/finder/?keywords=8b70aa4d05f245a4b664290a8bf4da13

SUSE Linux Enterprise Desktop 10 SP3 for x86

http://download.novell.com/patch/finder/?keywords=8b70aa4d05f245a4b664290a8bf4da13

______________________________________________________________________________

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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