(Conectiva Issues Fix) Apache mod_python String Processing Bug Lets Remote Users Crash the Web Server
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SecurityTracker Alert ID: 1009741 |
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SecurityTracker URL: http://securitytracker.com/id/1009741
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CVE Reference:
CAN-2003-0973
(Links to External Site)
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Date: Apr 13 2004
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Impact:
Denial of service via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 3.x prior to 3.0.4, 2.x prior to 2.7.9
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Description:
A vulnerability was reported in the Apache mod_python module in the processing of certain query strings. A remote user can cause denial of service conditions.
It is reported that a remote user can send a specific query string to be processed by mod_python, causing the Apache httpd process to crash. No further details were provided.
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Impact:
A remote user can cause the Apache web server process to crash.
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Solution:
Conectiva has released a fix.
ftp://atualizacoes.conectiva.com.br/8/RPMS/mod_python-2.7.10-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/mod_python-2.7.10-1U80_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/mod_python-3.0.4-28605U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/mod_python-doc-3.0.4-28605U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/SRPMS/mod_python-3.0.4-28605U90_1cl.src.rpm
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Vendor URL: www.modpython.org/ (Links to External Site)
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Cause:
Exception handling error
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Underlying OS:
Linux (Conectiva)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Mon, 12 Apr 2004 15:07:12 -0300
Subject: [conectiva-updates] [CLA-2004:837] Conectiva Security Announcement - mod_python
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
- --------------------------------------------------------------------------
CONECTIVA LINUX SECURITY ANNOUNCEMENT
- --------------------------------------------------------------------------
PACKAGE : mod_python
SUMMARY : Remote denial of service vulnerability
DATE : 2004-04-12 15:06:00
ID : CLA-2004:837
RELEVANT
RELEASES : 8, 9
- -------------------------------------------------------------------------
DESCRIPTION
The package mod_python provides an Apache module that embeds the
Python interpreter within the server.
This update fixes a remote denial of service vulnerabiliy[1] in
Apache web-servers which have mod_python enabled (this is not the
default in Conectiva Linux). An attacker can crash an apache child
process by sending a specially crafted message that triggers the bug
in mod_python.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2003-0973 to this issue[2].
SOLUTION
All mod_python users should do the upgrade. Notice that after the
installation you have to restart the httpd service manually in order
to load the new module. To achieve this you may execute the following
command (as root):
# service httpd restart
REFERENCES
1.http://www.modpython.org/pipermail/mod_python/2003-November/004005.html
2.http://cve.mitre.org/cgi-bin/cvename.cgi?name=2003-0973
UPDATED PACKAGES
ftp://atualizacoes.conectiva.com.br/8/RPMS/mod_python-2.7.10-1U80_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/8/SRPMS/mod_python-2.7.10-1U80_1cl.src.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/mod_python-3.0.4-28605U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/RPMS/mod_python-doc-3.0.4-28605U90_1cl.i386.rpm
ftp://atualizacoes.conectiva.com.br/9/SRPMS/mod_python-3.0.4-28605U90_1cl.src.rpm
ADDITIONAL INSTRUCTIONS
The apt tool can be used to perform RPM packages upgrades:
- run: apt-get update
- after that, execute: apt-get upgrade
Detailed instructions regarding the use of apt and upgrade examples
can be found at http://distro.conectiva.com.br/atualizacoes/#apt?idioma=en
- -------------------------------------------------------------------------
All packages are signed with Conectiva's GPG key. The key and instructions
on how to import it can be found at
http://distro.conectiva.com.br/seguranca/chave/?idioma=en
Instructions on how to check the signatures of the RPM packages can be
found at http://distro.conectiva.com.br/seguranca/politica/?idioma=en
- -------------------------------------------------------------------------
All our advisories and generic update instructions can be viewed at
http://distro.conectiva.com.br/atualizacoes/?idioma=en
- -------------------------------------------------------------------------
Copyright (c) 2004 Conectiva Inc.
http://www.conectiva.com
- -------------------------------------------------------------------------
subscribe: conectiva-updates-subscribe@papaleguas.conectiva.com.br
unsubscribe: conectiva-updates-unsubscribe@papaleguas.conectiva.com.br
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