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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2001.012 -- FreeBSD-SA-00:79 oops allows remote code execution 10 January 2001 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: oops Vendor: FreeBSD Ports Collection Operating System: FreeBSD BSD Impact: Execute Arbitrary Code/Commands Access Required: Remote - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-00:79 Security Advisory FreeBSD, Inc. Topic: oops allows remote code execution Category: ports Module: oops Announced: 2000-12-20 Credits: |CyRaX| <cyrax@pkcrew.org> Affects: Ports collection prior to the correction date. Corrected: 2000-12-14 Vendor status: Updated version released FreeBSD only: NO I. Background oops is a caching WWW proxy server. II. Problem Description The oops port, versions prior to 1.5.2, contains remote vulnerabilities through buffer and stack overflows in the HTML parsing code. These vulnerabilities may allow remote users to execute arbitrary code as the user running oops. The oops 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 4200 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 Malicious remote users may execute arbitrary code as the user running oops. If you have not chosen to install the oops port/package, then your system is not vulnerable to this problem. IV. Workaround Deinstall the oops port/package, if you have installed it. V. Solution One of the following: 1) Upgrade your entire ports collection and rebuild the oops port. 2) Deinstall the old package and install a new package dated after the correction date, obtained from: ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-3-stable/www/oops-1.5.2.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/www/oops-1.5.2.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/www/oops-1.5.2.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/www/oops-1.5.2.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/www/oops-1.5.2.tgz NOTE: It may be several days before updated packages are available. 3) download a new port skeleton for the oops 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-3-stable/devel/portcheckout-2.0.tgz 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 iQCVAwUBOkDD+VUuHi5z0oilAQF/GQQAphFsq7DIG9Gez7F6ry71W/c9vwC0RMgz 4IWDeYtkLQhB86n2nkQFMeRQi6EAAOKrOeVJtGhjgtOib6nR6sPCJxbY+s7G/RCw /hz1q6xG4MOw+obhFUsKO8UyWfONYGnKNB5JLqi/dbzXPXwSuuf6wKPClZbXRNEv aR8tF+briCU= =ZwXz - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- This security bulletin is provided as a service to AusCERT's members. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/Information/advisories.html If you believe that your system has been compromised, contact AusCERT or your representative in FIRST (Forum of Incident Response and Security Teams). Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for emergencies. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBOm/yzCh9+71yA2DNAQHrjwQAkROQXAFsCqKm5qRAPpsDZwiekZVGQnCy JoPBXxU8JsqZPOoGXFvZ0Nq7qILTbmd6mUIoQTDcFZ8PhIsudKX31mo1Zalbvks3 u9R1/BIJZy919ZcZmiHI/2SlfNlzEFl9EI5k5TfjJfjllHDd6zl7uMqr5Rq3zxOt g5VZWgMQa3Q= =SIxN -----END PGP SIGNATURE-----