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                   Red Hat Security Advisory

Synopsis:          Updated mod_python packages fix denial of service vulnerability
Advisory ID:       RHSA-2004:058-01
Issue date:        2004-02-26
Updated on:        2004-02-26
Product:           Red Hat Enterprise Linux
Keywords:          mod_python DoS
Cross references:  
Obsoletes:         
CVE Names:         CAN-2003-0973
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1. Topic:

Updated mod_python packages that fix a denial of service vulnerability are
now available for Red Hat Enterprise Linux.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64
Red Hat Linux Advanced Workstation 2.1 - ia64
Red Hat Enterprise Linux ES version 2.1 - i386
Red Hat Enterprise Linux WS version 2.1 - i386
Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux ES version 3 - i386
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64

3. Problem description:

mod_python embeds the Python language interpreter within the Apache httpd
server.

A bug has been found in mod_python versions 2.7.10 and earlier that can
lead to a denial of service vulnerability.  The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CAN-2003-0973 to
this issue.

Although Red Hat Enterprise Linux shipped with a version of mod_python that
contains this bug, our testing was unable to trigger the denial of service
vulnerability.  However, mod_python users are advised to upgrade to these
errata packages, which contain a backported patch that corrects this bug.

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.

If up2date fails to connect to Red Hat Network due to SSL
Certificate Errors, you need to install a version of the
up2date client with an updated certificate.  The latest version of
up2date is available from the Red Hat FTP site and may also be
downloaded directly from the RHN website:

https://rhn.redhat.com/help/latest-up2date.pxt

5. RPMs required:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/mod_python-2.7.8-2.src.rpm

i386:
Available from Red Hat Network: mod_python-2.7.8-2.i386.rpm

ia64:
Available from Red Hat Network: mod_python-2.7.8-2.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/mod_python-2.7.8-2.src.rpm

ia64:
Available from Red Hat Network: mod_python-2.7.8-2.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/mod_python-2.7.8-2.src.rpm

i386:
Available from Red Hat Network: mod_python-2.7.8-2.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/mod_python-2.7.8-2.src.rpm

i386:
Available from Red Hat Network: mod_python-2.7.8-2.i386.rpm

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/mod_python-3.0.3-3.ent.src.rpm

i386:
Available from Red Hat Network: mod_python-3.0.3-3.ent.i386.rpm

ia64:
Available from Red Hat Network: mod_python-3.0.3-3.ent.ia64.rpm

ppc:
Available from Red Hat Network: mod_python-3.0.3-3.ent.ppc.rpm

s390:
Available from Red Hat Network: mod_python-3.0.3-3.ent.s390.rpm

s390x:
Available from Red Hat Network: mod_python-3.0.3-3.ent.s390x.rpm

x86_64:
Available from Red Hat Network: mod_python-3.0.3-3.ent.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/mod_python-3.0.3-3.ent.src.rpm

i386:
Available from Red Hat Network: mod_python-3.0.3-3.ent.i386.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/mod_python-3.0.3-3.ent.src.rpm

i386:
Available from Red Hat Network: mod_python-3.0.3-3.ent.i386.rpm

ia64:
Available from Red Hat Network: mod_python-3.0.3-3.ent.ia64.rpm

x86_64:
Available from Red Hat Network: mod_python-3.0.3-3.ent.x86_64.rpm



6. Verification:

MD5 sum                          Package Name
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e06203d2306cd30015c64e453c5e00f6 2.1AS/en/os/SRPMS/mod_python-2.7.8-2.src.rpm
7b2b03557bc408221c549f299101705c 2.1AS/en/os/i386/mod_python-2.7.8-2.i386.rpm
8c7ece4e0c46d52afc5018ec8a252208 2.1AS/en/os/ia64/mod_python-2.7.8-2.ia64.rpm
e06203d2306cd30015c64e453c5e00f6 2.1AW/en/os/SRPMS/mod_python-2.7.8-2.src.rpm
8c7ece4e0c46d52afc5018ec8a252208 2.1AW/en/os/ia64/mod_python-2.7.8-2.ia64.rpm
e06203d2306cd30015c64e453c5e00f6 2.1ES/en/os/SRPMS/mod_python-2.7.8-2.src.rpm
7b2b03557bc408221c549f299101705c 2.1ES/en/os/i386/mod_python-2.7.8-2.i386.rpm
e06203d2306cd30015c64e453c5e00f6 2.1WS/en/os/SRPMS/mod_python-2.7.8-2.src.rpm
7b2b03557bc408221c549f299101705c 2.1WS/en/os/i386/mod_python-2.7.8-2.i386.rpm
3928d331fd4d3492581e09afb5198367 3AS/en/os/SRPMS/mod_python-3.0.3-3.ent.src.rpm
d83256ed6c3f759f81511d5bbbe4bd30 3AS/en/os/i386/mod_python-3.0.3-3.ent.i386.rpm
f09c41ae2aff29fe7a79fcefadb21bef 3AS/en/os/ia64/mod_python-3.0.3-3.ent.ia64.rpm
261979c42795ece9537eebd75cd80070 3AS/en/os/ppc/mod_python-3.0.3-3.ent.ppc.rpm
5931e6fb80e4a04743b92438a32d3dbd 3AS/en/os/s390/mod_python-3.0.3-3.ent.s390.rpm
0731f48408089fc3374148f8af5351f4 3AS/en/os/s390x/mod_python-3.0.3-3.ent.s390x.rpm
5e1d9310db6075d08ca1346c0039593d 3AS/en/os/x86_64/mod_python-3.0.3-3.ent.x86_64.rpm
3928d331fd4d3492581e09afb5198367 3ES/en/os/SRPMS/mod_python-3.0.3-3.ent.src.rpm
d83256ed6c3f759f81511d5bbbe4bd30 3ES/en/os/i386/mod_python-3.0.3-3.ent.i386.rpm
3928d331fd4d3492581e09afb5198367 3WS/en/os/SRPMS/mod_python-3.0.3-3.ent.src.rpm
d83256ed6c3f759f81511d5bbbe4bd30 3WS/en/os/i386/mod_python-3.0.3-3.ent.i386.rpm
f09c41ae2aff29fe7a79fcefadb21bef 3WS/en/os/ia64/mod_python-3.0.3-3.ent.ia64.rpm
5e1d9310db6075d08ca1346c0039593d 3WS/en/os/x86_64/mod_python-3.0.3-3.ent.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key is
available from https://www.redhat.com/security/keys.html

You can verify each package with the following command:
    
    rpm --checksig -v <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:
    
    md5sum <filename>


7. References:

http://www.modpython.org/pipermail/mod_python/2003-November/014532.html
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0973

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/solutions/security/news/contact.html

Copyright 2003 Red Hat, Inc.
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