From security-advisories@FreeBSD.org Wed Feb 7 23:13:33 2001 From: FreeBSD Security Advisories To: BUGTRAQ@SECURITYFOCUS.COM Date: Wed, 7 Feb 2001 11:42:07 -0800 Subject: [BUGTRAQ] FreeBSD Ports Security Advisory: FreeBSD-SA-01:20.mars_nwe -----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-01:20 Security Advisory FreeBSD, Inc. Topic: mars_nwe contains potential remote root compromise Category: ports Module: mars_nwe Announced: 2001-02-07 Credits: Przemyslaw Frasunek Affects: Ports collection prior to the correction date. Corrected: 2001-01-30 Vendor status: Vendor notified FreeBSD only: NO I. Background mars_nwe is a Novell Netware server emulator. II. Problem Description The mars_nwe port, versions prior to 0.99.b19_1, contains a remote format string vulerability. Because of this vulnerability, a malicious remote user sending specially-crafted packets may be able to execute arbitrary code on the local system, potentially gaining root access. The mars_nwe 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 4500 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 cause arbitrary code to be executed on the local system, potentially gaining root access. If you have not chosen to install the mars_nwe port/package, then your system is not vulnerable to this problem. IV. Workaround Deinstall the mars_nwe port/package, if you have installed it. V. Solution One of the following: 1) Upgrade your entire ports collection and rebuild the mars_nwe 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-3-stable/net/mars_nwe-0.99.b19_1.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-4-stable/net/mars_nwe-0.99.b19_1.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-4-stable/net/mars_nwe-0.99.b19_1.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/i386/packages-5-current/net/mars_nwe-0.99.b19_1.tgz ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/alpha/packages-5-current/net/mars_nwe-0.99.b19_1.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 mars_nwe 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 iQCVAwUBOoGk4VUuHi5z0oilAQFwUAP9HAYPxR6z25Lg6QzlsWMBJt8UDx7JKZx8 bR4U9l6IFzNS3p4IgwtiFDrqfCNpRRBtWDrXYmpWdwL2g1cx6MGWLayCeGq6g1ha MfKTTPlFrmSorXm6NdtcH33wDD05ScWQPCjhATJT3b4VxcbfmR1SEPxqXBOw6Whe MFKc9SisWEc= =m02+ -----END PGP SIGNATURE-----