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)
100 lines
3.8 KiB
Text
100 lines
3.8 KiB
Text
-----BEGIN PGP SIGNED MESSAGE-----
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=============================================================================
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FreeBSD-SA-01:22 Security Advisory
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FreeBSD, Inc.
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Topic: dc20ctrl port contains a locally exploitable buffer overflow
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yielding gid dialer
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Category: ports
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Module: dc20ctrl
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Announced: 2001-02-07
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Credits: Found during internal auditing
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Affects: Ports collection prior to the correction date.
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Corrected: 2001-02-07
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Vendor status: Vendor notified
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FreeBSD only: No
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I. Background
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dc20ctrl is a program to control Kodak DC20 digital cameras.
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II. Problem Description
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The dc20ctrl port, versions prior to 0.4_1, contains a locally
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exploitable buffer overflow. Because the dc20ctrl program is also
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setgid dialer, unprivileged local users may gain gid dialer on the
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local system. This may allow the users to gain unauthorized access to
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the serial port devices.
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The dc20ctrl 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 4500 third-party applications in a ready-to-install
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format. The ports collections shipped with FreeBSD 3.5.1 and 4.2
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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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Unprivileged local users may gain increased privileges on the local
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system including potentially unauthorized access to the serial port
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devices.
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If you have not chosen to install the dc20ctrl port/package, then
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your system is not vulnerable to this problem.
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IV. Workaround
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Deinstall the dc20ctrl 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 dc20ctrl 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-3-stable/graphics/dc20ctrl-0.4_1.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/graphics/dc20ctrl-0.4_1.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/graphics/dc20ctrl-0.4_1.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/graphics/dc20ctrl-0.4_1.tgz
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ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/graphics/dc20ctrl-0.4_1.tgz
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NOTE: it may be several days before updated packages are available.
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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 dc20ctrl 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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