8736288 2002-07-16 16:53 -0400 /180 rader/ <bugzilla@redhat.com>
Sänt av: joel@lysator.liu.se
Importerad: 2002-07-17 00:00 av Brevbäraren
Extern mottagare: redhat-watch-list@redhat.com
Extern mottagare: redhat-announce-list@redhat.com
Extern kopiemottagare: bugtraq@securityfocus.com
Extern kopiemottagare: linux-security@redhat.com
Mottagare: Bugtraq (import) <23112>
Mottagare: Red Hat Announce (import) <2149>
Sänt: 2002-07-17 01:12
Markerad av 1 person.
Ärende: [RHSA-2002:134-12] Updated mod_ssl packages available
------------------------------------------------------------
From: bugzilla@redhat.com
To: redhat-watch-list@redhat.com, redhat-announce-list@redhat.com
Cc: bugtraq@securityfocus.com, linux-security@redhat.com
Message-ID: <200207162053.g6GKrY301861@porkchop.devel.redhat.com>
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Red Hat, Inc. Red Hat Security Advisory
Synopsis: Updated mod_ssl packages available
Advisory ID: RHSA-2002:134-12
Issue date: 2002-07-01
Updated on: 2002-07-16
Product: Red Hat Linux
Keywords: mod_ssl overflow
Cross references: RHSA-2002:135 RHSA-2002:136
Obsoletes: RHSA-2002:041
CVE Names: CAN-2002-0653
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1. Topic:
Updated mod_ssl packages are now available for Red Hat Linux 7, 7.1,
7.2, and 7.3. These updates incorporate a fix for an incorrect bounds
check in versions of mod_ssl up to and including version 2.8.9.
2. Relevant releases/architectures:
Red Hat Linux 7.0 - alpha, i386
Red Hat Linux 7.1 - alpha, i386, ia64
Red Hat Linux 7.2 - i386, ia64
Red Hat Linux 7.3 - i386
3. Problem description:
The mod_ssl module provides strong cryptography for the Apache Web
server via the Secure Sockets Layer (SSL) and Transport Layer Security
(TLS) protocols. Versions of mod_ssl prior to 2.8.10 are subject to a
single NULL overflow that can cause arbitrary code execution.
In order to exploit this vulnerability, the Apache Web server has to
be configured to allow overriding of configuration settings on a
per-directory basis, and untrusted local users must be able to modify
a directory in which the server is configured to allow overriding.
The local attacker may then become the user that Apache is running as
(usually 'www' or 'nobody').
Note that regardless of this bug, local users can obtain the same
privileges if the server is configured to allow them to create CGI
scripts which run as the Web server user, or if PHP is enabled but
not configured in "safe mode".
The errata packages contain versions of mod_ssl that have been
patched and are not vulnerable to this issue.
Please note that you must restart the httpd daemon to use the updated
module. For instructions on doing this, see the bottom of the
Solutions section below.
4. Solution:
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
To update all RPMs for your particular architecture, run:
rpm -Fvh [filenames]
where [filenames] is a list of the RPMs you wish to upgrade. Only
those RPMs which are currently installed will be updated. Those RPMs
which are not installed but included in the list will not be updated.
Note that you can also use wildcards (*.rpm) if your current
directory *only* contains the desired RPMs.
Please note that this update is also available via Red Hat Network.
Many people find this an easier way to apply updates. To use Red Hat
Network, launch the Red Hat Update Agent with the following command:
up2date
This will start an interactive process that will result in the
appropriate RPMs being upgraded on your system.
After the appropriate updates have been applied, it will be necessary
to manually restart the server with the following command:
/sbin/service httpd restart
5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):
6. RPMs required:
Red Hat Linux 7.0:
SRPMS:
ftp://updates.redhat.com/7.0/en/os/SRPMS/mod_ssl-2.8.5-5.src.rpm
alpha:
ftp://updates.redhat.com/7.0/en/os/alpha/mod_ssl-2.8.5-5.alpha.rpm
i386:
ftp://updates.redhat.com/7.0/en/os/i386/mod_ssl-2.8.5-5.i386.rpm
Red Hat Linux 7.1:
SRPMS:
ftp://updates.redhat.com/7.1/en/os/SRPMS/mod_ssl-2.8.5-5.src.rpm
alpha:
ftp://updates.redhat.com/7.1/en/os/alpha/mod_ssl-2.8.5-5.alpha.rpm
i386:
ftp://updates.redhat.com/7.1/en/os/i386/mod_ssl-2.8.5-5.i386.rpm
ia64:
ftp://updates.redhat.com/7.1/en/os/ia64/mod_ssl-2.8.5-5.ia64.rpm
Red Hat Linux 7.2:
SRPMS:
ftp://updates.redhat.com/7.2/en/os/SRPMS/mod_ssl-2.8.5-6.src.rpm
i386:
ftp://updates.redhat.com/7.2/en/os/i386/mod_ssl-2.8.5-6.i386.rpm
ia64:
ftp://updates.redhat.com/7.2/en/os/ia64/mod_ssl-2.8.5-6.ia64.rpm
Red Hat Linux 7.3:
SRPMS:
ftp://updates.redhat.com/7.3/en/os/SRPMS/mod_ssl-2.8.7-6.src.rpm
i386:
ftp://updates.redhat.com/7.3/en/os/i386/mod_ssl-2.8.7-6.i386.rpm
7. Verification:
MD5 sum Package Name
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68f324107e24931fbd3c13fd7f0a4f66 7.0/en/os/SRPMS/mod_ssl-2.8.5-5.src.rpm
5505cb06688d8d669a927dc5a29d0bac 7.0/en/os/alpha/mod_ssl-2.8.5-5.alpha.rpm
2fdd482796a973447d19e01cf8a11603 7.0/en/os/i386/mod_ssl-2.8.5-5.i386.rpm
68f324107e24931fbd3c13fd7f0a4f66 7.1/en/os/SRPMS/mod_ssl-2.8.5-5.src.rpm
5505cb06688d8d669a927dc5a29d0bac 7.1/en/os/alpha/mod_ssl-2.8.5-5.alpha.rpm
2fdd482796a973447d19e01cf8a11603 7.1/en/os/i386/mod_ssl-2.8.5-5.i386.rpm
9a0d26822a4055ccf1433d92c0c565a2 7.1/en/os/ia64/mod_ssl-2.8.5-5.ia64.rpm
39e695b50d1a2496cad55cf396ea5d88 7.2/en/os/SRPMS/mod_ssl-2.8.5-6.src.rpm
4a18209d091f3c8bbc2edc21ddbc0ae8 7.2/en/os/i386/mod_ssl-2.8.5-6.i386.rpm
56781cdd2dc2ca137aabe23d587ce783 7.2/en/os/ia64/mod_ssl-2.8.5-6.ia64.rpm
f7388246313fc23b83228361671fa8ff 7.3/en/os/SRPMS/mod_ssl-2.8.7-6.src.rpm
8c9e4f55866bd16df07bc945766bc680 7.3/en/os/i386/mod_ssl-2.8.7-6.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://marc.theaimsgroup.com/?l=apache-modssl&m=102491918531562
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0653
Copyright(c) 2000, 2001, 2002 Red Hat, Inc.
(8736288) /<bugzilla@redhat.com>/---------(Ombruten)