-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-14:01.bsnmpd Security Advisory The FreeBSD Project Topic: bsnmpd remote denial of service vulnerability Category: contrib Module: bsnmp Announced: 2014-01-14 Credits: Dirk Meyer Affects: All supported versions of FreeBSD. Corrected: 2014-01-14 19:02:14 UTC (stable/10, 10.0-PRERELEASE) 2014-01-14 19:10:38 UTC (releng/10.0, 10.0-RELEASE) 2014-01-14 19:10:38 UTC (releng/10.0, 10.0-RC5-p1) 2014-01-14 19:10:38 UTC (releng/10.0, 10.0-RC4-p1) 2014-01-14 19:10:38 UTC (releng/10.0, 10.0-RC3-p1) 2014-01-14 19:10:38 UTC (releng/10.0, 10.0-RC2-p1) 2014-01-14 19:10:38 UTC (releng/10.0, 10.0-RC1-p1) 2014-01-14 19:17:20 UTC (stable/9, 9.2-STABLE) 2014-01-14 19:42:28 UTC (releng/9.2, 9.2-RELEASE-p3) 2014-01-14 19:42:28 UTC (releng/9.1, 9.1-RELEASE-p10) 2014-01-14 19:17:20 UTC (stable/8, 8.4-STABLE) 2014-01-14 19:42:28 UTC (releng/8.4, 8.4-RELEASE-p7) 2014-01-14 19:42:28 UTC (releng/8.3, 8.3-RELEASE-p14) CVE Name: CVE-2014-1452 For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit <URL:http://security.FreeBSD.org/>. I. Background The bsnmpd is a simple and extensible SNMP daemon serves the Internet SNMP (Simple Network Management Protocol). II. Problem Description The bsnmpd(8) daemon is prone to a stack-based buffer-overflow when it has received a specifically crafted GETBULK PDU request. III. Impact This issue could be exploited to execute arbitrary code in the context of the service daemon, or crash the service daemon, causing a denial-of-service. IV. Workaround No workaround is available, but systems not running bsnmpd(8) are not vulnerable. V. Solution Perform one of the following: 1) Upgrade your vulnerable system to a supported FreeBSD stable or release / security branch (releng) dated after the correction date. 2) To update your vulnerable system via a source code patch: The following patches have been verified to apply to the applicable FreeBSD release branches. a) Download the relevant patch from the location below, and verify the detached PGP signature using your PGP utility. # fetch http://security.FreeBSD.org/patches/SA-14:01/bsnmpd.patch # fetch http://security.FreeBSD.org/patches/SA-14:01/bsnmpd.patch.asc # gpg --verify bsnmpd.patch.asc b) Execute the following commands as root: # cd /usr/src # patch < /path/to/patch Recompile the operating system using buildworld and installworld as described in <URL:http://www.FreeBSD.org/handbook/makeworld.html>. Restart the bsnmpd(8) daemons, or reboot the system. 3) To update your vulnerable system via a binary patch: Systems running a RELEASE version of FreeBSD on the i386 or amd64 platforms can be updated via the freebsd-update(8) utility: # freebsd-update fetch # freebsd-update install VI. Correction details The following list contains the correction revision numbers for each affected branch. Branch/path Revision - ------------------------------------------------------------------------- stable/8/ r260642 releng/8.3/ r260647 releng/8.4/ r260647 stable/9/ r260642 releng/9.1/ r260647 releng/9.2/ r260647 stable/10/ r260638 releng/10.0/ r260640 - ------------------------------------------------------------------------- To see which files were modified by a particular revision, run the following command, replacing NNNNNN with the revision number, on a machine with Subversion installed: # svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base Or visit the following URL, replacing NNNNNN with the revision number: <URL:http://svnweb.freebsd.org/base?view=revision&revision=NNNNNN> VII. References <other info on vulnerability> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1452> The latest revision of this advisory is available at <URL:http://security.FreeBSD.org/advisories/FreeBSD-SA-14:01.bsnmpd.asc> -----BEGIN PGP SIGNATURE----- iQIcBAEBCgAGBQJS1ZS6AAoJEO1n7NZdz2rnDXwP/1iQmuO8VLjZoD3LMpiHyA/i YgwjX5x9XT2MyVrRmu+nHaCG3ZDC4/IV72/jCzV8udQJ1RF6Aswhuk6mXI7oatol OYF27JnRVAJQjAvXw3zMsp4hLv631TvgO1Az1vK7f1pX8bDC/eBTaiCH7I6QBYGS E4Fsi2MwOWIRyglTjlFSL8Wb2yQmzkKCx/EVFF/6mRC7l3a9pkHf5VKQtut1KYFu 5QF5cG5anur4daP4w45yWsl0qkRDO5mJdpD+S3NtzydluWzz/Dk/0laS5wB+LLzV cXC5/GR/acQhO+MvDIDT4Emra2OXzsheEahOJhLKHsBF8pHBi5IldkVwQmme76/g aR1gLSFJ5LYcpAgBQgeWKXXCAol5zNRCR8v8IBnV2+rYRSrIdl5lstgVmla++xJD +bC7PbTqcLlyFGrMEvd/mAvX1PVa9BVYtaxXA5QZq5EHP7nsKotcAk7/kouVfmao Gdxlt7YjRic6D/WqF8RFiQv9ezpbEnMQ1BwOCSUEJasXlyxJXYA6vva7tyM3OmyD c2I9JLeV8aCUgIf3s+HoGcZhz01kmu9REQ/OEDtiN8kX94WOzpectf8V5g+JnxRd HoOfcvrChohL4nla+3RvG1LJo5KD5N09yHnV2y3LjxTdKu9Hw4ATzFwmPmEUqUfG eF12aO4PVp42wYWNHtGe =xZTc -----END PGP SIGNATURE----- _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-security To unsubscribe, send any mail to "[email protected]"