FreeBSD Security Advisories
2001-May-28 16:22 UTC
FreeBSD Ports Security Advisory FreeBSD-SA-01:23.icecast [REVISED]
-----BEGIN PGP SIGNED MESSAGE----- ============================================================================FreeBSD-SA-01:23 Security Advisory FreeBSD, Inc. Topic: icecast port contains remote vulnerability [REVISED] Category: ports Module: icecast Announced: 2001-03-12 Revised: 2001-05-28 Credits: |CyRaX| <cyrax@pkcrew.org> Affects: Ports collection prior to the correction date. Corrected: 2001-04-20 Vendor status: Updated version released FreeBSD only: NO 0. Revision History 2001-03-12 v1.0 Initial release 2001-05-28 v1.1 Note vulnerabilities in versions prior to 1.3.10 I. Background icecast is a server for streaming MP3 audio. II. Problem Description The icecast software, versions prior to 1.3.10, contains multiple format string vulnerabilities, which allow a remote attacker to execute arbitrary code as the user running icecast, usually the root user. There are a number of other potential abuses of format strings which may or may not pose security risks, but have not currently been audited. The icecast port is not installed by default, nor is it "part of FreeBSD" as such: it is part of the FreeBSD ports collection, which contains over 5200 third-party applications in a ready-to-install format. The ports collections shipped with FreeBSD 3.5.1 and 4.3 contain this problem since it was discovered after the releases. FreeBSD makes no claim about the security of these third-party applications, although an effort is underway to provide a security audit of the most security-critical ports. III. Impact Arbitrary remote users can execute arbitrary code on the local system as the user running icecast, usually the root user. If you have not chosen to install the icecast port/package, then your system is not vulnerable to this problem. IV. Workaround Deinstall the icecast port/package, if you have installed it. V. Solution Consider running the icecast software as a non-privileged user to minimize the impact of further security vulnerabilities in this software. To upgrade icecast, choose one of the following options: 1) Upgrade your entire ports collection and rebuild the icecast port. 2) Deinstall the old package and install a new package dated after the correction date, obtained from: [i386] ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/audio/icecast-1.3.10.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/audio/icecast-1.3.10.tgz [alpha] Packages are not automatically generated for the alpha architecture at this time due to lack of build resources. 3) download a new port skeleton for the icecast port from: http://www.freebsd.org/ports/ and use it to rebuild the port. 4) Use the portcheckout utility to automate option (3) above. The portcheckout port is available in /usr/ports/devel/portcheckout or the package can be obtained from: ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/devel/portcheckout-2.0.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/devel/portcheckout-2.0.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/devel/portcheckout-2.0.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/devel/portcheckout-2.0.tgz -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.5 (FreeBSD) Comment: For info see http://www.gnupg.org iQCVAwUBOxLdQFUuHi5z0oilAQEksAP/ar7tYpvKO1/Zg//kALIsg92yXoi0dQas 83ADVyzqaECID1kXMMaW6f3YOO6+n6BIcT1sgMHXrSw3AmsIiLUBSUiZN7Uk6Ylk HNSl1JUbINePepYrqn8c4Mi2tiQ9OPGClRfwx2kfTMChZRB8JQ/L0nb0gruvC88t okHUhPlKB2Q=hiK4 -----END PGP SIGNATURE----- This is the moderated mailing list freebsd-announce. The list contains announcements of new FreeBSD capabilities, important events and project milestones. See also the FreeBSD Web pages at http://www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-announce" in the body of the message
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