-----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 . 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 . 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: VII. References The latest revision of this advisory is available at -----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-----