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______________________________________________________________________________
SUSE Security Announcement
Package: zlib
Announcement ID: SUSE-SA:2005:043
Date: Thu, 28 Jul 2005 13:00:00 +0000
Affected Products: 9.1, 9.2, 9.3
SUSE Linux Enterprise Server 9
Novell Linux Desktop 9
Open Enterprise Server 9
Vulnerability Type: denial of service
Severity (1-10): 7
SUSE Default Package: yes
Cross-References: CAN-2005-1849
Content of This Advisory:
1) Security Vulnerability Resolved:
zlib 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:
- See SUSE Security Summary Report
6) Authenticity Verification and Additional Information
______________________________________________________________________________
1) Problem Description and Brief Discussion
The previous zlib update for CAN-2005-2096 fixed a flaw in zlib that
could allow a carefully crafted compressed stream to crash an
application. While the original patch corrected the reported
overflow, Markus Oberhumer discovered additional ways a stream could
trigger an overflow. This update fixes those problems as well.
This issue is tracked by the Mitre CVE ID CAN-2005-1849.
Since only zlib 1.2.x is affected, older SUSE products are not
affected by this problem.
2) Solution or Work-Around
There is no known workaround, please install the update packages.
3) Special Instructions and Notes
Please close and restart all programs using zlib 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
to apply the update, replacing with the filename of the
downloaded RPM package.
Our maintenance customers are notified individually. The packages are
offered for installation from the maintenance web.
x86 Platform:
SUSE Linux 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/zlib-1.2.2-5.4.i586.rpm
e22e166180e156c09f84b84317232f2d
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/i586/zlib-devel-1.2.2-5.4.i586.rpm
9ca4fdb05d3fa585c63d878af98a7317
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/zlib-32bit-9.3-7.2.x86_64.rpm
5e75c7c73334ba827def17ea71f9e7a2
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/zlib-devel-32bit-9.3-7.2.x86_64.rpm
6456e311fa21811cda3a9cd684a6a640
SUSE Linux 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/zlib-1.2.1-74.4.i586.rpm
0d48ecb24fe312086b7c2b0c5a038d9a
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/zlib-devel-1.2.1-74.4.i586.rpm
f31b09d3d33b02e65446bfdf86c921af
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/zlib-32bit-9.2-200507230712.x86_64.rpm
a3ce5949fbfd59093dacdd7a9296f5a8
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/zlib-devel-32bit-9.2-200507230712.x86_64.rpm
c8e8d1d19f94d578efa2d8778a343492
SUSE Linux 9.1:
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/zlib-1.2.1-70.12.i586.rpm
2e1b7e050b6ab5fbc30899b7fc30a7ce
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/zlib-devel-1.2.1-70.12.i586.rpm
b2ae406817ca0644b1534ab53343bc0a
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/i586/zlib-32bit-9.1-200507231731.i586.rpm
2b4a495d72765d51a78ba5ffa34ebb15
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/i586/zlib-devel-32bit-9.1-200507231731.i586.rpm
740a06ba1f1a046b7bf0d9ead37f119b
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/src/zlib-1.2.1-70.12.src.rpm
c20084c183dc32986804e670635e18dc
x86-64 Platform:
SUSE Linux 9.3:
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/zlib-1.2.2-5.4.x86_64.rpm
b8f0a85a618efc6b804066147ddb7b7c
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/x86_64/zlib-devel-1.2.2-5.4.x86_64.rpm
2c3ae8a389221bcefcdd38a44f9caed1
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.3/rpm/src/zlib-1.2.2-5.4.src.rpm
f26be5f1ae412bec5b09494acc00835b
SUSE Linux 9.2:
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/zlib-1.2.1-74.4.x86_64.rpm
3461465492ae8cc42521057b56fccf58
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/zlib-devel-1.2.1-74.4.x86_64.rpm
4b7a425ff93c0891a755124197970470
source rpm(s):
ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/zlib-1.2.1-74.4.src.rpm
7ebd7618092ccd8f9f92270329f0a414
SUSE Linux 9.1:
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/zlib-1.2.1-70.12.x86_64.rpm
256c2d9594321c0c1de16d6b61a3244e
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/zlib-devel-1.2.1-70.12.x86_64.rpm
21628e906dd8c92b9e9b4bd1b8a793a0
source rpm(s):
ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/zlib-1.2.1-70.12.src.rpm
f360dee8caeed6e32787feef84246b33
______________________________________________________________________________
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 "
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
to verify the signature of the package, replacing 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
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-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
.
For general information or the frequently asked questions (FAQ),
send mail to or
.
=====================================================================
SUSE's security contact is or .
The 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
pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key
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