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)
110 lines
4.1 KiB
Text
110 lines
4.1 KiB
Text
-----BEGIN PGP SIGNED MESSAGE-----
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=============================================================================
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FreeBSD-SA-01:67 Security Advisory
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FreeBSD, Inc.
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Topic: htdig configuration file vulnerability
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Category: ports
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Module: htdig
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Announced: 2001-12-17
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Credits: Rafal Wojtczuk <nergal@7bulls.com>
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Affects: Ports collection prior to the correction date
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Corrected: 2001-09-25 07:08:47 2001 UTC
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FreeBSD only: NO
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I. Background
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htsearch is a part of htdig. The htdig system is a complete World Wide
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Web indexing and searching system.
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II. Problem Description
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htsearch can be run either remotely as a CGI or from the command line.
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htsearch supports several options for use from the command line, such
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as an option specifying a configuration file that it should use.
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However, these options are not limited to use via the command line.
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When run as a CGI script, htsearch still honors these options, which
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may be passed as part of the URL. As a result, a remote attacker can
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request that htsearch use any file that the webserver has sufficient
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privilege to read as a configuration file.
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The htsearch port is not installed by default, nor is it "part of
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FreeBSD" as such: it is part of the FreeBSD ports collection, which
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contains over 6000 third-party applications in a ready-to-install
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format. The ports collection shipped with FreeBSD 4.4 contains this
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problem since it was discovered after the release.
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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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A remote attacker may use htsearch as a kind of denial-of-service
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attack by causing it to read a never-ending special file such as
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`/dev/null'.
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More seriously, if the attacker has a local account or can otherwise
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create a file on the target system (such as via anonymous FTP upload
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or Samba), then he can remotely read any file on the target system for
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which the webserver has sufficient privilege.
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IV. Workaround
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1) Deinstall the htdig port/package if you have it installed.
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V. Solution
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1) Upgrade your entire ports collection and rebuild the htdig 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 the following directories:
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[i386]
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/textproc/htdig-3.1.5_1.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/textproc/htdig-3.1.5_1.tgz
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[alpha]
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Packages are not automatically generated for the alpha architecture at
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this time due to lack of build resources.
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3) Download a new port skeleton for the htdig 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-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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VI. Correction details
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The following list contains the revision numbers of each file that was
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corrected in the FreeBSD ports collection.
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Path Revision
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- -------------------------------------------------------------------------
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ports/textproc/htdig/Makefile 1.20
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ports/textproc/htdig/file/patch-htsearch_cc 1.1
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- -------------------------------------------------------------------------
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VII. References
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<URL:http://sourceforge.net/tracker/?func=detail&atid=104593&aid=458013&group_id=4593>
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<URL:http://www.geocrawler.com/archives/3/8822/2001/9/100/6685429/>
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