8136976 2002-03-13 11:32 -0500 /123 rader/ <bugzilla@redhat.com>
Sänt av: joel@lysator.liu.se
Importerad: 2002-03-13 23:32 av Brevbäraren
Extern mottagare: redhat-watch-list@redhat.com
Extern kopiemottagare: bugtraq@securityfocus.com
Extern kopiemottagare: linux-security@redhat.com
Extern kopiemottagare: security@redhat.com
Mottagare: Bugtraq (import) <21406>
Mottagare: Red Hat Announce (import) <2075>
Sänt: 2002-03-18 23:29
Ärende: [RHSA-2002:042-12] Updated secureweb packages available
------------------------------------------------------------
From: bugzilla@redhat.com
To: redhat-watch-list@redhat.com
Cc: bugtraq@securityfocus.com, linux-security@redhat.com,
security@redhat.com
Message-ID: <200203131632.g2DGW3x30377@porkchop.redhat.com>
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Red Hat, Inc. Red Hat Security Advisory
Synopsis: Updated secureweb packages available
Advisory ID: RHSA-2002:042-12
Issue date: 2002-03-04
Updated on: 2002-03-13
Product: Red Hat Secure Web Server
Keywords: mod_ssl buffer overflow session cache
Cross references: RHSA-2002:041
Obsoletes:
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1. Topic:
Updated secureweb packages are now available for Red Hat Secure Web
Server 3.2 (U.S.). These updates close a buffer overflow in mod_ssl.
2. Relevant releases/architectures:
Red Hat Secure Web Server 3.2 - i386
3. Problem description:
When session caching is enabled, mod_ssl will serialize SSL session
variables to store them for later use. Unpatched versions of mod_ssl
prior to version 2.8.7 using the 'shm' or 'dbm' session caches would
do so using a buffer with a fixed size, making it vulnerable to
overflow.
To exploit the overflow, the server must be configured to require
client certificates, and an attacker must obtain a carefully crafted
client certificate that has been signed by a Certificate Authority
which is trusted by the server. If these conditions are met, it is
possible for an attacker to execute arbitrary code on the server.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2002-0082 to this issue.
Pay special attention to the installation instructions in the
"Solution" section below as they differ from standarad upgrade
instructions.
4. Solution:
Some of these files are distributed in rhmask format and may only be
used by individuals who have purchased Red Hat Linux 6.2 Professional.
To produce installable RPM files from the rhmask files, retrieve the
rhmask files via ftp and type the following command:
rhmask secureweb-3.2-12.i386.rpm secureweb-3.2.5-1.i386.rpm.rhmask
The original RPM is located only on your Secure Web Server CD, and
cannot be obtained via the Internet. Note: if you do not have the
original RPM located in the same directory as the rhmask file, you
will need to prefix the name of the RPM with the full path name to
its location (for example on your installation CD).
For each RPM for your particular architecture, run:
rpm -Fvh [filename]
where [filename] is the name of the RPM package.
To restart your Secure Web Server, type the following command in a
shell prompt as root:
/etc/rc.d/init.d/httpsd restart
5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):
6. RPMs required:
Red Hat Secure Web Server 3.2:
SRPMS:
ftp://updates.redhat.com/3.2/other_prod/secureweb/SRPMS/secureweb-3.2.5-3.nosrc.rpm
i386:
ftp://updates.redhat.com/3.2/other_prod/secureweb/i386/secureweb-3.2.5-3.i386.rpm.rhmask
ftp://updates.redhat.com/3.2/other_prod/secureweb/i386/secureweb-devel-3.2.5-3.i386.rpm
ftp://updates.redhat.com/3.2/other_prod/secureweb/i386/secureweb-manual-3.2.5-3.i386.rpm
7. Verification:
MD5 sum Package Name
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df95f1339f71af47d70ca965a9fe11cc 3.2/other_prod/secureweb/SRPMS/secureweb-3.2.5-3.nosrc.rpm
de9d5943625415a7492a2f5ad1165f37 3.2/other_prod/secureweb/i386/secureweb-3.2.5-3.i386.rpm.rhmask
1b39d3833a18b2c2b4b30f8d5ed88283 3.2/other_prod/secureweb/i386/secureweb-devel-3.2.5-3.i386.rpm
3ce2a02339fe3caf436a9eb2e1154f70 3.2/other_prod/secureweb/i386/secureweb-manual-3.2.5-3.i386.rpm
These packages are GPG signed by Red Hat, Inc. for security. Our key
is available at:
http://www.redhat.com/about/contact/pgpkey.html
You can verify each package with the following command:
rpm --checksig <filename>
If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
rpm --checksig --nogpg <filename>
8. References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0082
http://marc.theaimsgroup.com/?l=apache-modssl&m=101449247201254
http://online.securityfocus.com/archive/1/258646
Copyright(c) 2000, 2001, 2002 Red Hat, Inc.
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