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)
111 lines
3.9 KiB
Text
111 lines
3.9 KiB
Text
-----BEGIN PGP SIGNED MESSAGE-----
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=============================================================================
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FreeBSD-SA-01:64 Security Advisory
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FreeBSD, Inc.
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Topic: wu-ftpd port contains remote root compromise
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Category: ports
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Module: wu-ftpd
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Announced: 2001-12-04
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Credits: CORE Security Technologies
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Contact: Ivan Arce (iarce@corest.com)
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Affects: Ports collection prior to the correction date
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Corrected: 2001-11-28 10:52:26 UTC
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FreeBSD only: NO
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I. Background
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wu-ftpd is a popular full-featured FTP server.
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II. Problem Description
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The wu-ftpd port, versions prior to wu-ftpd-2.6.1_7, contains a
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vulnerability which allows FTP users, both anonymous FTP users and
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those with valid accounts, to execute arbitrary code as root on
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the local machine. This may be accomplished by inserting invalid
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globbing parameters which are incorrectly parsed by the FTP server
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into command input.
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The wu-ftpd 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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FTP users, including anonymous FTP users, can cause arbitrary commands
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to be executed as root on the local machine.
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If you have not chosen to install the wu-ftpd port/package, then your
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system is not vulnerable to this problem.
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IV. Workaround
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Deinstall the wu-ftpd port/package, if you have 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 wu-ftpd 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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[i386]
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/ftp/wu-ftpd-2.6.1_7.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/ftp/wu-ftpd-2.6.1_7.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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NOTE: It may be several days before updated packages are available. Be
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sure to check the file creation date on the package, because the
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version number of the software has not changed.
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3) download a new port skeleton for the wu-ftpd 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/ftp/wu-ftpd/Makefile 1.41
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ports/ftp/wu-ftpd/files/patch-ap 1.2
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- -------------------------------------------------------------------------
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VII. References
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<URL:http://www.securityfocus.com/archive/1/242750>
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