Date: Mon, 10 Sep 2001 19:25:02 +0200 (CEST)
From: Thomas Biege
Subject: SuSE Security Announcement: apache-contrib (SuSE-SA:2001:31)
____________________________________________________________________________
SuSE Security Announcement
Package: apache-contrib
Announcement-ID: SuSE-SA:2001:31
Date: Monday, September 10th 2001 12:30 MEST
Affected SuSE versions: 7.1, 7.2
Vulnerability Type: authentication bypass
Severity (1-10): 3
SuSE default package: no
Other affected systems: yes
Content of this advisory:
1) security vulnerability resolved: mod_auth_mysql
problem description, discussion, solution and upgrade information
2) pending vulnerabilities, solutions, workarounds
3) standard appendix (further information)
____________________________________________________________________________
1) problem description, brief discussion, solution, upgrade information
The Apache module mod_auth_mysql 1.4,which is shipped since SuSE Linux 7.1,
was found vulnerable to possible bypass authentication by MySQL command
injection.
An adversary could insert MySQL commands along with a password and these
commands will be interpreted by MySQL while mod_auth_mysql is doing the
password lookup in the database. A positive authentication could be returned.
Note, that this bug has not yet been proven exploitable so far.
A temporary fix does not exist; we recommend to update your system with the
new RPM from our FTP server.
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 -Uhv file.rpm" to apply
the update.
After installing the updated RPM run
- rcapache restart
- SuSEconfig
i386 Intel Platform:
SuSE-7.2
ftp://ftp.suse.com/pub/suse/i386/update/7.2/n2/apache-contrib-1.0.9-94.i386.rpm
7c84f6c3f8aaf2b96a312fea4d36abce
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/apache-contrib-1.0.9-94.src.rpm
56ad3d7f883a3e3eb5e96c5a92f7a2e2
SuSE-7.1
ftp://ftp.suse.com/pub/suse/i386/update/7.1/n2/apache-contrib-1.0.8-35.i386.rpm
cd7cedc70d56df239db8e4434344a46e
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/apache-contrib-1.0.8-35.src.rpm
7a0ca55c351b81756a05dfcff4e062be
Sparc Platform:
SuSE-7.1
ftp://ftp.suse.com/pub/suse/sparc/update/7.1/n2/apache-contrib-1.0.8-22.sparc.rpm
bdb772783eedc1fb235e2ff0af5517f7
source rpm:
ftp://ftp.suse.com/pub/suse/sparc/update/7.1/zq1/apache-contrib-1.0.8-22.src.rpm
a5b625c3b0820f4715aeee18d20a9306
AXP Alpha Platform:
SuSE-7.1
ftp://ftp.suse.com/pub/suse/axp/update/7.1/n2/apache-contrib-1.0.8-23.alpha.rpm
3958307564b855c81e556b4c7e01c105
source rpm:
ftp://ftp.suse.com/pub/suse/axp/update/7.1/zq1/apache-contrib-1.0.8-23.src.rpm
143386a82750af64aec0f615fc847ab2
PPC Power PC Platform:
SuSE-7.1
ftp://ftp.suse.com/pub/suse/ppc/update/7.1/n2/apache-contrib-1.0.8-22.ppc.rpm
97e4ab067fc16b36ecdd5bc8915379ef
source rpm:
ftp://ftp.suse.com/pub/suse/ppc/update/7.1/zq1/apache-contrib-1.0.8-22.src.rpm
aa2f5914d8e00ef511081096a1c33671
____________________________________________________________________________
2) Pending vulnerabilities in SuSE Distributions and Workarounds:
____________________________________________________________________________
3) 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 security@suse.de),
the checksums show proof of the authenticity of the package.
We advise against subscribing to 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 uninstalled 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 "build@suse.de" upon installation or upgrade, provided that
the package gpg is installed. The file containing the public key
is placed at the toplevel 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:
suse-security@suse.com
- general/linux/SuSE security discussion.
All SuSE security announcements are sent to this list.
To subscribe, send an email to
suse-security-subscribe@suse.com.
suse-security-announce@suse.com
- SuSE's announce-only mailing list.
Only SuSE's security annoucements are sent to this list.
To subscribe, send an email 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 respectively.
===================================================
SuSE's security contact is security@suse.com.
The security@suse.com 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 cleartext signature shows proof of the
authenticity of the text.
SuSE GmbH makes no warranties of any kind whatsoever with respect
to the information contained in this security advisory.
Bye,
Thomas
--
Thomas Biege, SuSE GmbH, Schanzaeckerstr. 10, 90443 Nuernberg
E@mail: thomas@suse.de Function: Security Support & Auditing
"lynx -source http://www.suse.de/~thomas/contact/thomas.asc | pgp -fka"
Key fingerprint = 51 AD B9 C7 34 FC F2 54 01 4A 1C D4 66 64 09 84
