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FreeBSD Ports Security Advisory FreeBSD-SA-01:23.icecast


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Date: Mon, 12 Mar 2001 15:31:37 -0800
From: FreeBSD Security Advisories <security-advisories@FreeBSD.org.>
To: [email protected]
Subject: FreeBSD Ports Security Advisory FreeBSD-SA-01:23.icecast

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FreeBSD-SA-01:23 Security Advisory FreeBSD, Inc. Topic: icecast port contains remote vulnerability Category: ports Module: icecast Announced: 2001-03-12 Credits: |CyRaX| <cyrax@pkcrew.org.> Affects: Ports collection prior to the correction date. Corrected: 2001-03-10 Vendor status: Unresponsive FreeBSD only: NO I. Background icecast is a server for streaming MP3 audio. II. Problem Description The icecast software, versions prior to 1.3.7_1, 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 nearly 4700 third-party applications in a ready-to-install format. The ports collections shipped with FreeBSD 3.5.1 and 4.2 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-1.3.7_1.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/audio/icecast-1.3.7_1.tgz NOTE: It may be several days before updated packages are available [alpha] ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/audio/icecast-1.3.7_1.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/audio/icecast-1.3.7_1.tgz 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 v1.0.4 (FreeBSD) Comment: For info see http://www.gnupg.org iQCVAwUBOq1b9lUuHi5z0oilAQF0VQQAgjsvLSPtZ1pu6OtkGxuMJhCmmeCvFJvL 4szsF1csrFrXhaH7z1VjJP8r/Q2NBzWcS3qujkhGRObsGGyvAJKk7QVrqnjXV3gD rgLnphjNlKt0VuXafxXwTT8YTxoCbzOHy23aa0KaRWoCAVcVi4AAZs4XHEUgU+Ov lWOyEgxUBEk= =WM3Y -----END PGP SIGNATURE-----

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