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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2000.314 -- NetBSD Security Advisory 2000-013 cfengine contains format string vulnerabilities 27 October 2000 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: cfengine Vendor: NetBSD Package Collection Operating System: NetBSD Impact: Root Compromise Access Required: Remote - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- NetBSD Security Advisory 2000-013 ================================= Topic: cfengine contains format string vulnerabilities Version: any before 1.5.3nb3 Severity: possible remote root compromise. Abstract ======== Note: The cfengine package is not part of the base NetBSD distribution, and is not installed by default. It is part of the NetBSD package collection, which contains a large number of third-party applications in ready-to-install format. NetBSD makes no claim about the suitability or security of these third-party applications; however, when we become aware of severe security holes in commonly used packages, we may release advisories such as this one. The cfd daemon in GNU CFEngine contains several format string vulnerabilities in syslog() calls. This could permit remote hosts to inject the network daemon with a message causing a segmentation fault. As cfd is almost always run as root due to its nature (centralized configuration management), this could lead to a root compromise. This advisory was based on a message from to BUGTRAQ from Pekka Savola <pekkas@NETCORE.FI>. Solutions and Workarounds ========================= Versions of cfengine older than version 1.5.3nb2 could be vulnerable. To find out the version of cfengine installed on your NetBSD system, you can use pkg_info(1): # pkg_info -e cfengine-* If cfengine is not installed on your system, no output will be generated, and your system is not vulnerable to this problem. If you have a version older than, or including, 1.5.3nb2, you should upgrade to version 1.5.3nb3 (or newer) of cfengine. A corrected version has been part of the NetBSD packages collection since 2nd October 2000. If a vulnerable version of cfengine is installed, then you should immediately remove the vulnerability by deleting the package. As root, type: # pkg_delete -v cfengine-* If you continue to need cfengine, you should install a new version of the package. There are precompiled binary packages of cfengine for some NetBSD ports available from: ftp://ftp.netbsd.org/pub/NetBSD/packages/pkgsrc/sysutils/cfengine/README.html If no precompiled binary is available for your platform, you can build your own from source. First, make sure that you have a version of the pkgsrc hierarchy from 2nd October 2000 or later. (See http://www.netbsd.org/Sites/net.html for ways to obtain NetBSD, and pkgsrc, its packages collection.) You can then install the new version of the package: cd pkgsrc/sysutils/cfengine; make clean; make install For more information on how to rebuild a package from source for your architecture, see ftp://ftp.netbsd.org/pub/NetBSD/packages/pkgsrc/README Revision History ================ 20001024 revised prior to publication. More Information ================ Information about NetBSD and NetBSD security can be found at http://www.NetBSD.ORG/ and http://www.NetBSD.ORG/Security/. Copyright 2000, The NetBSD Foundation, Inc. All Rights Reserved. $NetBSD: NetBSD-SA2000-013.txt,v 1.4 2000/10/24 14:39:40 agc Exp $ - -----BEGIN PGP SIGNATURE----- Version: 2.6.3ia Charset: noconv iQCVAwUBOfhIqD5Ru2/4N2IFAQH74QP/Rmrn0Nq/1S3NEgWUZYRMlO5Sd9Q98LZg XfFqYPlYwOqHAS+LO003AiBfc+2XBb0Si86tLkk2REhQ51UGgfA4D2wM7G9ym61D ddiU9rryutq2xiuXr/yNOKhHrXzQ0aPDehzXce0iXlJdMnRhuf9VtXzP8bDyq0pg gC4NfMUKiB8= =JuHl - -----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 iQCVAwUBOlSNHSh9+71yA2DNAQGJGgP9EC2ocWl/9n73eS1DSBy1VaMByZN2EX+v QuVfD0UFUvs4t7OdCK9v1DfSo8Sq4cOvV4XcWYhwhyNoo2ZNPeJmLyC5+brBXmwX BuQ9pQ1XWnOZJqWaKXETqt9OvN8G8gb9qaPgHUmA50oiNVf6mUZKNCCMg33JL9Pe y2rK9OcmmfU= =JJmx -----END PGP SIGNATURE-----