3571e53040
patches for easier mirroring, to eliminate a special copy, to make www.freebsd.org/security a full copy of security.freebsd.org and be eventually be the same. For now files are just sitting there. The symlinks are missing. Discussed on: www (repository location) Discussed with: simon (so)
112 lines
4.5 KiB
Text
112 lines
4.5 KiB
Text
-----BEGIN PGP SIGNED MESSAGE-----
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=============================================================================
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FreeBSD-SA-00:75 Security Advisory
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FreeBSD, Inc.
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Topic: mod_php3/mod_php4 allows remote code execution
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Category: ports
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Module: mod_php3/mod_php4
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Announced: 2000-11-20
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Credits: Jouko Pynnönen <jouko@SOLUTIONS.FI>
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Affects: Ports collection prior to the correction date.
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Corrected: 2000-10-12 (mod_php4), 2000-10-18 (mod_php3)
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Vendor status: Updated version released
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FreeBSD only: NO
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I. Background
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php is a commonly used HTML-embedded scripting language.
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II. Problem Description
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The mod_php ports, versions prior to 3.0.17 (mod_php3) and 4.0.3
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(mod_php4), contain a potential vulnerablilty that may allow a
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malicious remote user to execute arbitrary code as the user running
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the web server, typically user 'nobody'. The vulnerability is due to
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a format string vulnerability in the error logging routines.
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A web server is vulnerable if error logging is enabled in php.ini.
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Additionally, individual php scripts may cause the web server to be
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vulnerable if the script uses the syslog() php function regardless of
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error logging in php.ini.
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The mod_php ports are not installed by default, nor are they "part of
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FreeBSD" as such: it is part of the FreeBSD ports collection, which
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contains over 4100 third-party applications in a ready-to-install
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format. The ports collections shipped with FreeBSD 3.5.1 and 4.1.1
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contain this problem since it was discovered after the releases, but
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it was corrected prior to the release of FreeBSD 4.2.
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FreeBSD makes no claim about the security of these third-party
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applications, although an effort is underway to provide a security
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audit of the most security-critical ports.
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III. Impact
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Malicious remote users can execute arbitrary code on the local system
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as the user running the webserver (typically user 'nobody'). This
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vulnerability requires error logging to be enabled in php.ini or by
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using the syslog() php function in a script.
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If you have not chosen to install the mod_php3 or mod_php4
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port/package, then your system is not vulnerable to this problem.
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IV. Workaround
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Deinstall the mod_php3/mod_php4 port/package, if you you have
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installed it.
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V. Solution
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One of the following:
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1) Upgrade your entire ports collection and rebuild the
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mod_php3/mod_php4 port.
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2) Deinstall the old package and install a new package dated after the
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correction date, obtained from:
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[php3]
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-3-stable/www/mod_php-3.0.17.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/www/mod_php-3.0.17.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/www/mod_php-3.0.17.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/www/mod_php-3.0.17.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/www/mod_php-3.0.17.tgz
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[php4]
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-3-stable/www/mod_php-4.0.3pl1.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/www/mod_php-4.0.3pl1.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/www/mod_php-4.0.3pl1.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/www/mod_php-4.0.3pl1.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/www/mod_php-4.0.3pl1.tgz
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3) download a new port skeleton for the mod_php3/mod_php4 port from:
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http://www.freebsd.org/ports/
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and use it to rebuild the port.
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4) Use the portcheckout utility to automate option (3) above. The
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portcheckout port is available in /usr/ports/devel/portcheckout or the
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package can be obtained from:
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-3-stable/devel/portcheckout-2.0.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/devel/portcheckout-2.0.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/devel/portcheckout-2.0.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/devel/portcheckout-2.0.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/devel/portcheckout-2.0.tgz
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