SecurityvulnsSECURITYVULNS:DOC:8296[Full-disclosure] SUSE Security Announcement: various KDE security problems (SUSE-SA:2005:022)
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SUSE Security Announcement
Package: kdelibs3
Announcement-ID: SUSE-SA:2005:022
Date: Mon, 11 Apr 2005 15:00:00 +0000
Affected products: 9.1, 9.2, 9.3
SUSE Linux Enterprise Server 9
Novell Linux Desktop 9
Vulnerability Type: remote code execution
local denial of service
Severity (1-10): 8
SUSE default package: yes
Cross References: CAN-2005-0237
CAN-2005-0396
Content of this advisory:
1) security vulnerability resolved:
several security problems in KDE
problem description
2) solution/workaround
3) special instructions and notes
4) package location and checksums
5) pending vulnerabilities, solutions, workarounds:
See SUSE Security Summary Report.
6) standard appendix (further information)
1) problem description, brief discussion
Several vulnerabilities have been identified and fixed in the KDE
desktop environment.
- A buffer overflow via specially crafted PCX pictures was fixed.
This could lead to a remote attacker being able to execute code
as the user opening or viewing a PCX images. This PCX image could
have been embedded within a web page or Email.
This affects SUSE Linux 9.1 up to 9.3, SUSE Linux Enterprise Server
9 and Novell Linux Desktop 9.
- The IDN domain name cloaking problem was fixed.
A remote website could disguise its name as another potentially
trusted site by using a extension originally meant for non-ASCII
domain names by using "homographs" which look exactly like other
letters.
The fix used by KDE is only use homographs for trusted domains.
It is disabled by default for the .net, .com and .org domains.
This issue exists in SUSE Linux 9.1 and 9.2, SUSE Linux Enterprise
Server 9 and Novell Linux Desktop 9. It has been assigned the
Mitre CVE ID CAN-2005-0233.
- A denial of service attack against the DCOP service was fixed.
A local user could cause another users KDE session to visible hang
by writing bad data to the world writable DCOP socket. The socket
has been made writable only for the user itself.
This was found by Sebastian Krahmer of SUSE Security.
This affects all SUSE Linux versions, except SUSE Linux 9.3.
Updates for SUSE Linux up to 9.0 and SUSE Linux Enterprise Server
8 are not included for this minor issue. They will be included
should a later security update for different issues be necessary.
This is tracked by the Mitre CVE ID CAN-2005-0396.
Additionally following bug was fixed:
- A possible race in the DNS resolver causing unresolved hosts in rare
cases was fixed. This only affected SUSE Linux 9.3.
2) solution/workaround
Please install the updated packages.
3) special instructions and notes
Make sure you restart your KDE session after this update.
4) package location and checksums
Please download the update package for your distribution and verify its
integrity by the methods listed in section 3) of this announcement.
Then, install the package using the command "rpm -Fhv file.rpm" to apply
the update.
Our maintenance customers are being notified individually. The packages
are being offered to install from the maintenance web.
x86 Platform:
SUSE Linux 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/kdelibs3-3.4.0-20.3.i586.rpm
6b63160218d7e9023418980186942ab3
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/kdelibs3-32bit-9.3-7.1.x86_64.rpm
7de0dcf016ad28f3f95c9110a376dc7b
SUSE Linux 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/kdelibs3-3.3.0-34.5.i586.rpm
47c8c9ccb24b30261de0910ff5bfa19e
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/kdelibs3-32bit-9.2-200504081300.x86_64.rpm
7da9ca5c0cefb043ea170c59beaa588a
SUSE Linux 9.1:
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/kdelibs3-3.2.1-44.46.i586.rpm
6dd4f0b38a750f256f6639decda2a968
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/i586/kdelibs3-32bit-9.1-200504071814.i586.rpm
955791a7b3973698f2c9ea8b0cd09716
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/kdelibs3-3.2.1-44.46.src.rpm
3f5585b97d663b7d6d9bcac0f8c0b7a0
x86-64 Platform:
SUSE Linux 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/kdelibs3-3.4.0-20.3.x86_64.rpm
5c79a3e9e143bd0c29ecbf7d4b4222a2
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/src/kdelibs3-3.4.0-20.3.src.rpm
6a3f653fe866b9cfb7f9215fed404e94
SUSE Linux 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/kdelibs3-3.3.0-34.5.x86_64.rpm
d2970930a5757b3a2758eb53efda5d8b
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/kdelibs3-3.3.0-34.5.src.rpm
4ae72b2108db739ebc4aefca67b5b566
SUSE Linux 9.1:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/kdelibs3-3.2.1-44.46.x86_64.rpm
7355ab449354f49fdc0de161d6fb86ab
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/kdelibs3-3.2.1-44.46.src.rpm
1587e0cfa6ce3dae17c4f6fa8c10ef01
5) Pending vulnerabilities in SUSE Distributions and Workarounds:
See SUSE Security Summary Report.
6) standard appendix: authenticity verification, additional information
-
Package authenticity verification:
SUSE update packages are available on many mirror ftp servers all over
the world. While this service is being considered valuable and important
to the free and open source software community, many users wish to be
sure about the origin of the package and its content before installing
the package. There are two verification methods that can be used
independently from each other to prove the authenticity of a downloaded
file or rpm package:
1) md5sums as provided in the (cryptographically signed) announcement.
2) using the internal gpg signatures of the rpm package.1) execute the command
md5sum <name-of-the-file.rpm>
after you downloaded the file from a SUSE ftp server or its mirrors.
Then, compare the resulting md5sum with the one that is listed in the
announcement. Since the announcement containing the checksums is
cryptographically signed (usually using the key [email protected]),
the checksums show proof of the authenticity of the package.
We disrecommend to subscribe to security lists which cause the
email message containing the announcement to be modified so that
the signature does not match after transport through the mailing
list software.
Downsides: You must be able to verify the authenticity of the
announcement in the first place. If RPM packages are being rebuilt
and a new version of a package is published on the ftp server, all
md5 sums for the files are useless.2) 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, where <file.rpm> is the
filename of the rpm package that you have downloaded. Of course,
package authenticity verification can only target an un-installed rpm
package file.
Prerequisites:
a) gpg is installed
b) The package is signed using a certain key. The public part of this
key must be installed by the gpg program in the directory
~/.gnupg/ under the user's home directory who performs the
signature verification (usually root). You can import the key
that is used by SUSE in rpm packages for SUSE Linux by saving
this announcement to a file ("announcement.txt") and
running the command (do "su -" to be root):
gpg --batch; gpg < announcement.txt | gpg --import
SUSE Linux distributions version 7.1 and thereafter install the
key "[email protected]" upon installation or upgrade, provided that
the package gpg is installed. The file containing the public key
is placed at the top-level directory of the first CD (pubring.gpg)
and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de . -
SUSE runs two security mailing lists to which any interested party may
subscribe:[email protected]
- general/linux/SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an email to
<[email protected]>.[email protected]
- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an email to
<[email protected]>.For general information or the frequently asked questions (faq)
send mail to:
<[email protected]> or
<[email protected]> respectively.=====================================================================
SUSE's security contact is <[email protected]> or <[email protected]>.
The <[email protected]> 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,
it is desired that the clear-text signature shows proof of the
authenticity of the text.
SUSE Linux AG makes 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 <[email protected]>
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <[email protected]>
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