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)
98 lines
3.6 KiB
Text
98 lines
3.6 KiB
Text
-----BEGIN PGP SIGNED MESSAGE-----
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=============================================================================
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FreeBSD-SA-00:40 Security Advisory
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FreeBSD, Inc.
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Topic: mopd port allows remote root compromise
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Category: ports
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Module: mopd
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Announced: 2000-08-28
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Credits: Matt Power <mhpower@MIT.EDU>, OpenBSD
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Affects: Ports collection prior to the correction date.
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Corrected: 2000-08-09
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Vendor status: Contacted
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FreeBSD only: NO
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I. Background
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mopd is used for netbooting older DEC machines such as VAXen and
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DECstations.
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II. Problem Description
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The mopd port contains several remotely exploitable
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vulnerabilities. An attacker exploiting these can execute arbitrary
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code on the local machine as root.
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The mopd port is not installed by default, nor is it "part of FreeBSD"
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as such: it is part of the FreeBSD ports collection, which contains
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over 3700 third-party applications in a ready-to-install format. The
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ports collections shipped with FreeBSD 3.5-RELEASE and 4.1-RELEASE
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contain this problem, since it was discovered after the releases.
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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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Remote users can execute arbitrary code on the local machine as root.
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If you have not chosen to install the mopd 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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One of the following:
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1) Deinstall the mopd port/package, if you have installed it.
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2) Restrict access to the mopd port using a perimeter firewall, or
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ipfw(8)/ipf(8) on the local machine. Note that users who pass these
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access restrictions may still exploit the vulnerability.
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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 mopd 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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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-3-stable/net/mopd-1.2b.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/net/mopd-1.2b.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/net/mopd-1.2b.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/net/mopd-1.2b.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/net/mopd-1.2b.tgz
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NOTE: Be sure to check the file creation date on the package, because
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the version number of the software has not changed.
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3) download a new port skeleton for the mopd 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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