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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2000.255 -- FreeBSD-SA-00:51 mailman port allows local root compromise 14 September 2000 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: mailman Vendor: FreeBSD Ports Collection Operating System: FreeBSD Linux Unix Platform: N/A Impact: Root Compromise Access Required: Local - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-00:51 Security Advisory FreeBSD, Inc. Topic: mailman port allows local root compromise Category: ports Module: mailman Announced: 2000-09-13 Affects: Ports collection. Corrected: 2000-08-05 Credits: Vendor status: Updated version released. FreeBSD only: NO I. Background Mailman is a mailing list manager. II. Problem Description The mailman port, versions prior to 2.0b5, contained several locally exploitable vulnerabilities which could be used to gain root privileges. The mailman 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 3800 third-party applications in a ready-to-install format. The ports collections shipped with FreeBSD 4.1 and 3.5.1 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 Unprivileged users can obtain root privileges on the local system. If you have not chosen to install the mailman port/package, then your system is not vulnerable to this problem. IV. Workaround Deinstall the mailman port/package, if you have installed it. V. Solution One of the following: 1) Upgrade your entire ports collection and rebuild the mailman 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/mail/mailman-2.0b5.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/mail/mailman-2.0b5.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/mail/mailman-2.0b5.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/mail/mailman-2.0b5.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/mail/mailman-2.0b5.tgz NOTE: It may be several days before updated packages are available. 3) download a new port skeleton for the listmanager 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: 2.6.2 iQCVAwUBOb/kDlUuHi5z0oilAQGvbAQAihAdHJMSq1ZyN71EzJ0FpBmzdgDYEIJ2 keMI1mMfgTgH3gxGnQ9POji6vdw+FxuB2QQuNJvvc8xAsbTLxq18kfeLjlRglc9+ rc23bwT83N5PVdQwJEMyvWugghxvT/3MYhnO3djNnpdep8jPmkAinjJWvVFcb50y kRwD3IJtjUc= =U45z - -----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: 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 iQCVAwUBOlSMyih9+71yA2DNAQFMZgP/YYdww5fnYoQS4MQjV2G1sYX0WY2XjxSD vq0fl+gwdYvM1T9I+DRtwfYn1akTQZVwArNqCW3oS6wKwM9310ETZtf4Ri4gZ25H T3AowLkSZqIEx6isPaA99uR35R7n4imbo51c38vFNK3Kwgiy4Jayw3XZJaaPVY8C a6/wJZnH0wE= =uooh -----END PGP SIGNATURE-----