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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2000.092 -- FreeBSD-SA-00:18 gnapster port allows remote users to view local files 12 May 2000 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: gnapster Vendor: FreeBSD Operating System: FreeBSD Unix Platform: N/A Impact: Access Privileged Data Access Required: Remote - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-00:18 Security Advisory FreeBSD, Inc. Topic: gnapster port allows remote users to view local files Category: ports Module: gnapster Announced: 2000-05-09 Credits: Fixed by vendor. Affects: Ports collection. Corrected: 2000-04-29 Vendor status: Updated version released. FreeBSD only: NO I. Background Gnapster is a client for the Napster file-sharing network. II. Problem Description The gnapster port (version 1.3.8 and earlier) contains a vulnerability which allows remote gnapster users to view any file on the local system which is accessible to the user running gnapster. Gnapster does not run with elevated privileges, so it is only the user's regular filesystem access permissions which are involved. The gnapster 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 3200 third-party applications in a ready-to-install format. The ports collection shipped with FreeBSD 4.0 contains this problem since it was discovered after the release. 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 Remote users can view files accessible to the user running the gnapster client. If you have not chosen to install the gnapster port/package, then your system is not vulnerable to this problem. IV. Workaround Deinstall the gnapster port/package, if you you have installed it. V. Solution One of the following: 1) Upgrade your entire ports collection and rebuild the gnapster port. 2) Reinstall a new package dated after the correction date, obtained from: ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-3-stable/audio/gnapster-1.3.9.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/audio/gnapster-1.3.9.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/audio/gnapster-1.3.9.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/audio/gnapster-1.3.9.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/audio/gnapster-1.3.9.tgz Note: it may be several days before the updated packages are available. 3) download a new port skeleton for the gnapster 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/packages/devel/portcheckout-1.0.tgz - -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBORhlmVUuHi5z0oilAQGytwQApAKwVXvt2Aw6JXMHetWyRLns2wPWT6l3 eIdlkGSesqJlxeeR22wfxWlqcFo3U2D8hlIcWCPCB5y7ejJ3MyeMU895OjJGZ5ii wNe5OabbNwnWjEQmMH8AB4c/zy8GRI9xTOMW/KAcoH5TGhmzJ+29KIYYFwJXlek7 Ywc5E9+Q0pw= =Yr2H - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to use any or all of this information is the responsibility of each user or organisation, and should be done so in accordance with site policies and procedures. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the original authors to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. 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: firstname.lastname@example.org 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). 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