From owner-freebsd-security@FreeBSD.ORG Tue Apr 8 23:34:13 2014 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 4DB419D2; Tue, 8 Apr 2014 23:34:13 +0000 (UTC) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:1900:2254:206c::16:87]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 38FEC1501; Tue, 8 Apr 2014 23:34:13 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.8/8.14.8) with ESMTP id s38NYDW9098585; Tue, 8 Apr 2014 23:34:13 GMT (envelope-from security-advisories@freebsd.org) Received: (from delphij@localhost) by freefall.freebsd.org (8.14.8/8.14.8/Submit) id s38NYDGb098583; Tue, 8 Apr 2014 23:34:13 GMT (envelope-from security-advisories@freebsd.org) Date: Tue, 8 Apr 2014 23:34:13 GMT Message-Id: <201404082334.s38NYDGb098583@freefall.freebsd.org> X-Authentication-Warning: freefall.freebsd.org: delphij set sender to security-advisories@freebsd.org using -f From: FreeBSD Security Advisories To: FreeBSD Security Advisories Subject: FreeBSD Security Advisory FreeBSD-SA-14:06.openssl Precedence: bulk X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.17 Reply-To: freebsd-security@freebsd.org List-Id: "Security issues \[members-only posting\]" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Apr 2014 23:34:13 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================= FreeBSD-SA-14:06.openssl Security Advisory The FreeBSD Project Topic: OpenSSL multiple vulnerabilities Category: contrib Module: openssl Announced: 2014-04-08 Affects: All supported versions of FreeBSD. Corrected: 2014-04-08 18:27:39 UTC (stable/10, 10.0-STABLE) 2014-04-08 18:27:46 UTC (releng/10.0, 10.0-RELEASE-p1) 2014-04-08 23:16:19 UTC (stable/9, 9.2-STABLE) 2014-04-08 23:16:05 UTC (releng/9.2, 9.2-RELEASE-p4) 2014-04-08 23:16:05 UTC (releng/9.1, 9.1-RELEASE-p11) 2014-04-08 23:16:19 UTC (stable/8, 8.4-STABLE) 2014-04-08 23:16:05 UTC (releng/8.4, 8.4-RELEASE-p8) 2014-04-08 23:16:05 UTC (releng/8.3, 8.3-RELEASE-p15) CVE Name: CVE-2014-0076, CVE-2014-0160 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. The Heartbeat Extension provides a new protocol for TLS/DTLS allowing the usage of keep-alive functionality without performing a renegotiation and a basis for path MTU (PMTU) discovery for DTLS. Elliptic Curve Digital Signature Algorithm (ECDSA) is a variant of the Digital Signature Algorithm (DSA) which uses Elliptic Curve Cryptography. OpenSSL uses the Montgomery Ladder Approach to compute scalar multiplication in a fixed amount of time, which does not leak any information through timing or power. II. Problem Description The code used to handle the Heartbeat Extension does not do sufficient boundary checks on record length, which allows reading beyond the actual payload. [CVE-2014-0160]. Affects FreeBSD 10.0 only. A flaw in the implementation of Montgomery Ladder Approach would create a side-channel that leaks sensitive timing information. [CVE-2014-0076] III. Impact An attacker who can send a specifically crafted packet to TLS server or client with an established connection can reveal up to 64k of memory of the remote system. Such memory might contain sensitive information, including key material, protected content, etc. which could be directly useful, or might be leveraged to obtain elevated privileges. [CVE-2014-0160] A local attacker might be able to snoop a signing process and might recover the signing key from it. [CVE-2014-0076] IV. Workaround No workaround is available, but systems that do not use OpenSSL to implement the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols implementation and do not use the ECDSA implementation from OpenSSL 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. [FreeBSD 8.x and FreeBSD 9.x] # fetch http://security.FreeBSD.org/patches/SA-14:06/openssl.patch # fetch http://security.FreeBSD.org/patches/SA-14:06/openssl.patch.asc # gpg --verify openssl.patch.asc [FreeBSD 10.0] # fetch http://security.FreeBSD.org/patches/SA-14:06/openssl-10.patch # fetch http://security.FreeBSD.org/patches/SA-14:06/openssl-10.patch.asc # gpg --verify openssl-10.patch.asc 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 IMPORTANT: the update procedure above does not update OpenSSL from the Ports Collection or from a package, known as security/openssl, which has to be updated separately via ports or package. Users who have installed security/openssl should update to at least version 1.0.1_10. VI. Correction details The following list contains the correction revision numbers for each affected branch. Branch/path Revision - ------------------------------------------------------------------------- stable/8/ r264285 releng/8.3/ r264284 releng/8.4/ r264284 stable/9/ r264285 releng/9.1/ r264284 releng/9.2/ r264284 stable/10/ r264266 releng/10.0/ r264267 - ------------------------------------------------------------------------- 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----- Version: GnuPG v2.0.22 (FreeBSD) iQIcBAEBCgAGBQJTRISyAAoJEO1n7NZdz2rnwdgP/RFT6HsugPJZeIKX2Rn36Mat qgAET7gotiU1Y7G/647BiSCOn/BQs9Z1yTLE7wKdgiVDDTZOHJCJxssXav/+Cqli G1Cyoi2Rv9R77sno0wdj62YguTg0EKnU52CYpHVmF2NA0H/zexXDrCgiQtyvnU62 ZtM2TO76qhKFXwNtIQ1EQYmu+qsxLbp65ryyu9Tq7rXlc52JYTa0QdWDcKoPtcBO U85HzJwQglX2lEmipv63s0vwur5eSTtlWSmUSpFzE1jsjYiRl7xFHQKdXxA5Ifw0 qO7LYrYK7b4EyEq9TcQQKvh05IgorjRcA4i0mSQFpc0HINtgv3bYlHyQL+tyN1+k /4uzdDFB27j8EuKZzEg6aF1JLNq9/zMvx+E0iykPodb5i+n5BzPzWc4rogHvj7rU mfSeABG3m/SifTewy1258V3TRfTKLNU8EPX2CTnJI9WjYX83GO7sM1vtaGQUOAFK gff2tFfeSmDpyCmp+RwnmIr5IefIG2y8s/0iJM/wLF3rW8ZrwP1zX+cot5KRCWfT FpdhHHLRcsCLM7frxmSgRdN+iuXIAcdfbj1EN7z1ryHLk2vRsm2n66kojt4BCnig 7JcStOjMSz843+1L3eCZubHIxVxxjKBGwqVfQ9OWbgeIro0+bapYLJIavuAa9BM6 1T0hWKFh59zAxyGPqX49 =X7Qk -----END PGP SIGNATURE-----