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SuSE: New CUPS packages fix remote code execution
by Patrick Lenz, in Security - Mon, Mar 24th 2008 07:49 PDT
A heap-overflow in the cgiCompileSearch() function of cups could be exploited by remote attackers to execute arbitrary code. The vulnerable function is used by the web-interface which is only available remotely if the print server shares printers over the network. Fixed packages are available from ftp.suse.com.
Links:
ftp.suse.com
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Hash: SHA1
______________________________________________________________________________
SUSE Security Announcement
Package: cups
Announcement ID: SUSE-SA:2008:015
Date: Wed, 19 Mar 2008 09:00:00 +0000
Affected Products: openSUSE 10.2
openSUSE 10.3
Vulnerability Type: remote code execution
Severity (1-10): 7
SUSE Default Package: yes
Cross-References: CVE-2008-0047
Content of This Advisory:
1) Security Vulnerability Resolved:
cups heap overflow
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
A heap-overflow in the cgiCompileSearch() function of cups could be
exploited by remote attackers to execute arbitrary code.
The vulnerable function is used by the web-interface which is only
available remotely if the print server shares printers over the
network.
2) Solution or Work-Around
There is no known workaround, please install the update packages.
3) Special Instructions and Notes
Please close and restart the cups daemon 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.
x86 Platform:
openSUSE 10.3:
http://download.opensuse.org/pub/opensuse/update/10.3/rpm/i586/cups-1.2.12-22.11.i586.rpm
59d0bc0b18d40a3be72c60746d1f223c
http://download.opensuse.org/pub/opensuse/update/10.3/rpm/i586/cups-client-1.2.12-22.11.i586.rpm
d3758fd042a07c9ae31daf00ad48c034
http://download.opensuse.org/pub/opensuse/update/10.3/rpm/i586/cups-devel-1.2.12-22.11.i586.rpm
5caf3b79220ad6c492813ffde4f86c26
http://download.opensuse.org/pub/opensuse/update/10.3/rpm/i586/cups-libs-1.2.12-22.11.i586.rpm
c2067a7d1340865e824ce1b04dd9733b
openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/i586/cups-1.2.7-12.13.i586.rpm
c2bfa233af5ac7f1bbc9cf5010af09cb
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/i586/cups-client-1.2.7-12.13.i586.rpm
5b820984ccd8d3da4e97caa0438c22b0
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/i586/cups-devel-1.2.7-12.13.i586.rpm
818a0742b3a6f1c414a9d9a8ebb406a6
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/i586/cups-libs-1.2.7-12.13.i586.rpm
aab2cb30b6a62db79737baf275d95a48
Power PC Platform:
openSUSE 10.3:
http://download.opensuse.org/pub/opensuse/update/10.3/rpm/ppc/cups-1.2.12-22.11.ppc.rpm
85e03e7949642037b5b31c38810de814
http://download.opensuse.org/pub/opensuse/update/10.3/rpm/ppc/cups-client-1.2.12-22.11.ppc.rpm
5f66f34cf29b07a67990fb94c5851492
http://download.opensuse.org/pub/opensuse/update/10.3/rpm/ppc/cups-devel-1.2.12-22.11.ppc.rpm
7e00d5906df3879f8dcdf1635f38eb05
http://download.opensuse.org/pub/opensuse/update/10.3/rpm/ppc/cups-libs-1.2.12-22.11.ppc.rpm
fd0eb0add52d8f518ebd682da55c82d9
openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/ppc/cups-1.2.7-12.13.ppc.rpm
454f5e4df74adcbd505f48670b3ccd89
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/ppc/cups-client-1.2.7-12.13.ppc.rpm
330126a765e4cbbd9eae309225271c55
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/ppc/cups-devel-1.2.7-12.13.ppc.rpm
fdfdf3991a68c6c7e6ddea4ef08e8e1f
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/ppc/cups-libs-1.2.7-12.13.ppc.rpm
7c0f765c96ef779086fe84418a7de044
x86-64 Platform:
openSUSE 10.3:
http://download.opensuse.org/pub/opensuse/update/10.3/rpm/x86_64/cups-1.2.12-22.11.x86_64.rpm
26b80f7f1132e810a859b96d466fe369
http://download.opensuse.org/pub/opensuse/update/10.3/rpm/x86_64/cups-client-1.2.12-22.11.x86_64.rpm
a45d9f40b7d1211cd9a116fba345d16b
http://download.opensuse.org/pub/opensuse/update/10.3/rpm/x86_64/cups-devel-1.2.12-22.11.x86_64.rpm
2cd298872f720717091708b244494f15
http://download.opensuse.org/pub/opensuse/update/10.3/rpm/x86_64/cups-libs-1.2.12-22.11.x86_64.rpm
af7e86332540ccb307c01dec05da8c44
http://download.opensuse.org/pub/opensuse/update/10.3/rpm/x86_64/cups-libs-32bit-1.2.12-22.11.x86_64.rpm
3a13b6d42f9afb8a0702681863682849
openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/x86_64/cups-1.2.7-12.13.x86_64.rpm
35957a84b7eb47a0c7a80f6ec5d6c7e8
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/x86_64/cups-client-1.2.7-12.13.x86_64.rpm
8d16762340776df4c00f69ffeef924b4
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/x86_64/cups-devel-1.2.7-12.13.x86_64.rpm
7d074501b5c78a516b02823235817cde
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/x86_64/cups-libs-1.2.7-12.13.x86_64.rpm
268da396eb8453aeaaef1494e34b0764
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/x86_64/cups-libs-32bit-1.2.7-12.13.x86_64.rpm
eaf78c6673eef6450649bcfa30780a9b
Sources:
openSUSE 10.3:
http://download.opensuse.org/pub/opensuse/update/10.3/rpm/src/cups-1.2.12-22.11.src.rpm
3ee7215c1dbec3e347d6053b37c15bdd
openSUSE 10.2:
ftp://ftp.suse.com/pub/suse/update/10.2/rpm/src/cups-1.2.7-12.13.src.rpm
63298f1a1947cabf45ad76ede55581b8
______________________________________________________________________________
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
replacing with the name of the file where you saved the
announcement. The output for a valid signature looks like:
gpg: Signature made using RSA key ID 3D25D3D9
gpg: Good signature from "SuSE Security Team "
where 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:
opensuse-security@opensuse.org
- General Linux and SUSE security discussion.
All SUSE security announcements are sent to this list.
To subscribe, send an e-mail to
.
opensuse-security-announce@opensuse.org
- SUSE's announce-only mailing list.
Only SUSE's security announcements are sent to this list.
To subscribe, send an e-mail to
.
=====================================================================
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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