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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2014.0056 OpenSSL multiple vulnerabilities 15 January 2014 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: openssl Publisher: FreeBSD Operating System: FreeBSD Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2013-6450 CVE-2013-6449 CVE-2013-4353 Reference: ESB-2014.0025 ESB-2014.0021 ESB-2014.0007 Original Bulletin: ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-14:03.openssl.asc - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-14:03.openssl Security Advisory The FreeBSD Project Topic: OpenSSL multiple vulnerabilities Category: contrib Module: openssl Announced: 2014-01-14 Affects: FreeBSD 10.0 prior to 10.0-RC5 Corrected: 2014-01-07 20:04:41 UTC (stable/10, 10.0-PRERELEASE) 2014-01-07 20:06:20 UTC (releng/10.0, 10.0-RC5) 2014-01-07 20:06:20 UTC (releng/10.0, 10.0-RC4-p1) 2014-01-07 20:06:20 UTC (releng/10.0, 10.0-RC3-p1) 2014-01-07 20:06:20 UTC (releng/10.0, 10.0-RC2-p1) 2014-01-07 20:06:20 UTC (releng/10.0, 10.0-RC1-p1) CVE Name: CVE-2013-4353, CVE-2013-6449, CVE-2013-6450 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 FreeBSD includes software from the OpenSSL Project. The OpenSSL Project is a collaborative effort to develop a robust, commercial-grade, full-featured Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library. II. Problem Description A carefully crafted invalid TLS handshake could crash OpenSSL with a NULL pointer exception. [CVE-2013-4353] A flaw in DTLS handling can cause an application using OpenSSL and DTLS to crash. [CVE-2013-6450] A flaw in OpenSSL can cause an application using OpenSSL to crash when using TLS version 1.2. [CVE-2013-6449] III. Impact An attacker can send a specifically crafted packet that could cause an OpenSSL enabled application to crash, resulting in a Denial of Service. IV. Workaround No workaround is available. 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-14:03/openssl.patch # fetch http://security.FreeBSD.org/patches/SA-14:03/openssl.patch.asc # gpg --verify openssl.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 all deamons using the library, 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/10/ r260404 releng/10.0/ r260405 - - ------------------------------------------------------------------------- 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 <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4353> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6449> <URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6450> The latest revision of this advisory is available at <URL:http://security.FreeBSD.org/advisories/FreeBSD-SA-14:03.openssl.asc> - -----BEGIN PGP SIGNATURE----- iQIcBAEBCgAGBQJS1ZTSAAoJEO1n7NZdz2rnHboP/Ryb4a9ENJ7J/S00E8V1YToh hihrCKssMl6GVltS4oeyAmAW+mDx3DZy+RmAEhgjyAX4gpAxcY/g665j5BMtWAtV LLJTI9D6ynO7+2y8CeD3W7tk28hNtBPWSV+cGi7USQMKijs6euPocgTU7TnAuF/e /jcDTn8Sx/Sq0d3ecTWFBOcPHiq5sm/3pW5B1RVxY9DL+zhQ7T/Rb6pgfp6trssM p8dklzoBReHqs1iPUC4RyhWXOoQoq5VX500b9SHh2X/7eBSq1ab76VF3x+9VOpjj VRxL9sdkmp+iaVfMHxms3vCLSDlmpgYpq5SftL3jgkequPCpU6NFQGFQKw2crdL0 NY7dDPjMuvDzzdG7BZtt1mjpRMMMGmZ7fK0myP0+a3YbXEEZeAGT6k07er/xkGCr uTWyPNM4g3Ulwkfnz60TbFrdMdiCJbRVC9xxOkGEALe882v0WWGPhx9IVbT3dGVw KGFOXM+IqF55JuaHQ0u/B4wrjBfgBSgOt90TDyMJ5rPjiKG9wyUWnn7QziAVJQ0M 0H/82/2cxNX5+efWNi7xhss2fs1zcU3kiyr135mqamgOQyPG8jFOF7RhdpeGfzVk ollQG+y1uwVTAWhmVb4MSaAuJw8ixVuap73Rbyug+MuKRLgR2jSxHFiBeiHLA1eG 1+DWJPX0+/zoNakLiw+r =YOCY - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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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 author's website 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/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 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 member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBUtXlDhLndAQH1ShLAQLfhA/8D5jEfoJroHQlJ4nMuqnrjCsbRzysP/Dk gdL740am2OqmDQ/IOpIH1n0ep+A2qd1WkBq3NKzF/LLqZA0aKJ7MSp8W29YeCl06 DmDvc2sT2F6Zpf3kCx36kh2NsIywjTEadPkOwzLuQHJ9A7ixBve+034pJs2B6NFy OtAIHHTHB5XzaAo0GPalynwX/j5mtg5j50Wt7phKRzUkSkIIN71vpEHLD+Xn4Adz SB+qw5Bs6krkqXo2njA67chxZprI1HMsWpK3Cjca+QFQDLFnwD3T140fuE1FFzA2 1c/YSQXCc8QUk56qpFK25OoUXNXj0MaJ3sB9NE2z2tpuWJ2hb2MQ5hznmoGevip2 26GAHjD4mOO8uVrfhwyOomIYdluhQlXvEJ7thtJ/uIz1ErdzQ62FOBb8rjkUbZDf k2pZv4dwoD06hRfnqacqcaIPWyW0LBEy31IKb55QMMq9oJkG75z/fux56r1iXr4i 8HB/ju4FjTKbrgjca/HN03Laf+vC6NPTdfaeF5Dvsb/nrkXsNF6ayNwc0brBodE4 tI2SLoSNDxeGkIY8qANTnuizc7cdsANIOMEG08NXbaKovU3Z5oEGW1UCdmM6lU8v FPZvD/foU48yhCNMTpqb7rpWRdyoKRWAkfGu9DCMLGewPjOYrVFd75Q/OO2ec0GY hGOtCfSHLMY= =nfN9 -----END PGP SIGNATURE-----