SuSE Security Announcement: heimdal (SUSE-SA:2006:011)
Posted on: 02/24/2006 04:52 PM

A security announcement from SUSE

-----BEGIN PGP SIGNED MESSAGE-----

______________________________________________________________________________

SUSE Security Announcement

Package: heimdal
Announcement ID: SUSE-SA:2006:011
Date: Fri, 24 Feb 2006 12:00:00 +0000
Affected Products: SUSE LINUX 9.2
SUSE LINUX 9.1
SuSE Linux Desktop 1.0
SuSE Linux Enterprise Server 8
SUSE SLES 9
UnitedLinux 1.0
Vulnerability Type: remote denial of service
Severity (1-10): 5
SUSE Default Package: no
Cross-References: CVE-2006-0582
CVE-2006-0677

Content of This Advisory:
1) Security Vulnerability Resolved:
local unauthorized file access, remote denial of service
Problem Description
2) Solution or Work-Around
3) Special Instructions and Notes
4) Package Location and Checksums
5) Pending Vulnerabilities, Solutions, and Work-Arounds:
none
6) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Problem Description and Brief Discussion

Heimdal is a Kerberos 5 implementation from the Royal Institut of Techno-
logy in Stockholm.
This update fixes two bugs in heimdal. The first one occurs in the rsh
daemon and allows an authenticated malicious user to gain ownership of
files that belong to other users (CVE-2006-0582).
The second bug affects the telnet server and can be used to crash the server
before authentication happens. It is even a denial-of-service attack when
the telnetd is started via inetd because inetd stops forking the daemon
when it forks too fast (CVE-2006-0677).

2) Solution or Work-Around

There is no work-around known.

3) Special Instructions and Notes

Please make sure the affected daemons are restarted after 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.


x86 Platform:

SUSE LINUX 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/heimdal-0.6.2-8.6.i586.rpm
3d3d6618cfb387ed34c324d805de0df0
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/heimdal-devel-0.6.2-8.6.i586.rpm
7f885d8e091ce98a3bab1816d4165d3e
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/heimdal-lib-0.6.2-8.6.i586.rpm
021f253a7df8d5ab3caa20b25ea67529
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/heimdal-tools-0.6.2-8.4.i586.rpm
748a213e99d7a2be08eeb4496aecb478
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/heimdal-tools-devel-0.6.2-8.4.i586.rpm
02b9f64f5be3822307102fb9d5842119

SUSE LINUX 9.1:
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/heimdal-0.6.1rc3-55.21.i586.rpm
235b22414f6129d744f2f62ffccc7962
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/heimdal-devel-0.6.1rc3-55.21.i586.rpm
5c17e233db8c0b53798cab0d78f1ede1
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/heimdal-lib-0.6.1rc3-55.21.i586.rpm
17d0afc2004af42ebbeb8d77af724fe5
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/i586/heimdal-lib-32bit-9.1-200602210606.i586.rpm
38c61584528fa24ff04ece6705d21fb3

x86-64 Platform:

SUSE LINUX 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/heimdal-0.6.2-8.6.x86_64.rpm
1f899680ff31945963b55e49df6bcfda
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/heimdal-devel-0.6.2-8.6.x86_64.rpm
1d65e94810c65ccff51b75066569c428
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/heimdal-devel-32bit-9.2-200602211039.x86_64.rpm
068244c514f752985be7c76c5a25418e
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/heimdal-lib-0.6.2-8.6.x86_64.rpm
20b9598b6f5cfaf70de0d3a120f89182
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/heimdal-lib-32bit-9.2-200602211039.x86_64.rpm
93dc79bdf0fc7b7b4cd82a0c3769329e
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/heimdal-tools-0.6.2-8.4.x86_64.rpm
31d1a3e3da2a794850b3e03710d5263c
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/heimdal-tools-devel-0.6.2-8.4.x86_64.rpm
71b87841750ba89979c51c3148d315a0

SUSE LINUX 9.1:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/heimdal-0.6.1rc3-55.21.x86_64.rpm
226be123cb085fb50899ac8af82f5bda
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/heimdal-devel-0.6.1rc3-55.21.x86_64.rpm
658aa7a1969078842a0a9368402b83ff
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/heimdal-lib-0.6.1rc3-55.21.x86_64.rpm
dafdcf2c26be6576916f5ba6cf3cd9f6

Sources:

SUSE LINUX 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/heimdal-0.6.2-8.6.src.rpm
e7333885b6976b490164d28dbc00e905

SUSE LINUX 9.1:
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/heimdal-0.6.1rc3-55.21.src.rpm
ab5d0a61dbfb9df34dfa200bda28d04a
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/heimdal-0.6.1rc3-55.21.src.rpm
0d7fc839fc86c6919931190dbdfbd88e

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

http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/e3602ff9b11cc8f4a33fff923a591a18.html
http://portal.suse.com/psdb/e3602ff9b11cc8f4a33fff923a591a18.html
http://support.novell.com/cgi-bin/search/searchtid.cgi?psdb/f1e0fa19e4bd47f5f481fa6abb284ed4.html
http://portal.suse.com/psdb/f1e0fa19e4bd47f5f481fa6abb284ed4.html

______________________________________________________________________________

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

Please read the weekly 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@suse.de>"

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.

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) Using the internal gpg signatures of the rpm package
2) MD5 checksums as provided in this announcement

1) 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@suse.de 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.

2) If you need an alternative means of verification, use the md5sum
command to verify the authenticity of the packages. Execute the command

md5sum <filename.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
SUSE security announcement. Because the announcement containing the
checksums is cryptographically signed (by security@suse.de), the
checksums show proof of the authenticity of the package if the
signature of the announcement is valid. Note that the md5 sums
published in the SUSE Security Announcements are valid for the
respective packages only. Newer versions of these packages cannot be
verified.

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

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

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

For general information or the frequently asked questions (FAQ),
send mail to <suse-security-info@suse.com> or
<suse-security-faq@suse.com>.

=====================================================================
SUSE's security contact is <security@suse.com> or <security@suse.de>.
The <security@suse.de> 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@suse.de>
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@suse.de>

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