[ GLSA 200401-03 ] Apache mod_python Denial of Service vulnerability

From: Tim Yamin (plasmaroo_at_gentoo.org)
Date: 01/27/04

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    Date: Tue, 27 Jan 2004 16:41:33 +0000
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    Gentoo Linux Security Advisory GLSA 200401-03
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    ~ http://security.gentoo.org
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    ~ Severity: Low
    ~ Title: Apache mod_python Denial of Service vulnerability
    ~ Date: January 27, 2004
    ~ Bugs: #39154
    ~ ID: 200401-03

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    Synopsis
    ========

    Apache's mod_python module could crash the httpd process if a specific,
    malformed query string was sent.

    Background
    ==========

    Mod_python is an Apache module that embeds the Python interpreter within
    the server allowing Python-based web-applications to be created.

    Description
    ===========

    The Apache Foundation has reported that mod_python may be prone to
    Denial of Service attacks when handling a malformed query. Mod_python
    2.7.9 was released to fix the vulnerability, however, because the
    vulnerability has not been fully fixed, version 2.7.10 has been released.

    Users of mod_python 3.0.4 are not affected by this vulnerability.

    Impact
    ======

    Although there are no known public exploits known for this exploit,
    users are recommended to upgrade mod_python to ensure the security of
    their infrastructure.

    Workaround
    ==========

    Mod_python 2.7.10 has been released [ the release announcement is at
    http://www.modpython.org/pipermail/mod_python/2004-January/014879.html ]
    to solve this issue; there is no immediate workaround.

    Resolution
    ==========

    All users using mod_python 2.7.9 or below are recommended to update
    their mod_python installation:

    ~ $> emerge sync
    ~ $> emerge -pv ">=dev-python/mod_python-2.7.10"
    ~ $> emerge ">=dev-python/mod_python-2.7.10"
    ~ $> /etc/init.d/apache restart

    Concerns?
    =========

    Security is a primary focus of Gentoo Linux and ensuring the
    confidentiality and security of our users machines is of utmost
    importance to us. Any security concerns should be addressed to
    security@gentoo.org or alternatively, you may file a bug at
    http://bugs.gentoo.org.
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