170 lines
6.7 KiB
Text
170 lines
6.7 KiB
Text
-----BEGIN PGP SIGNED MESSAGE-----
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Hash: SHA512
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=============================================================================
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FreeBSD-SA-14:14.openssl Security Advisory
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The FreeBSD Project
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Topic: OpenSSL multiple vulnerabilities
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Category: contrib
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Module: openssl
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Announced: 2014-06-05
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Affects: All supported versions of FreeBSD.
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Corrected: 2014-06-05 12:32:38 UTC (stable/10, 10.0-STABLE)
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2014-06-05 12:33:23 UTC (releng/10.0, 10.0-RELEASE-p5)
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2014-06-05 12:53:06 UTC (stable/9, 9.3-BETA1)
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2014-06-05 12:53:06 UTC (stable/9, 9.3-BETA1-p2)
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2014-06-05 12:33:23 UTC (releng/9.2, 9.2-RELEASE-p8)
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2014-06-05 12:33:23 UTC (releng/9.1, 9.1-RELEASE-p15)
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2014-06-05 12:32:38 UTC (stable/8, 8.4-STABLE)
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2014-06-05 12:33:23 UTC (releng/8.4, 8.4-RELEASE-p12)
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CVE Name: CVE-2014-0195, CVE-2014-0221, CVE-2014-0224, CVE-2014-3470
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For general information regarding FreeBSD Security Advisories,
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including descriptions of the fields above, security branches, and the
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following sections, please visit <URL:http://security.FreeBSD.org/>.
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I. Background
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FreeBSD includes software from the OpenSSL Project. The OpenSSL Project is
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a collaborative effort to develop a robust, commercial-grade, full-featured
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Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3)
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and Transport Layer Security (TLS v1) protocols as well as a full-strength
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general purpose cryptography library.
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II. Problem Description
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Receipt of an invalid DTLS fragment on an OpenSSL DTLS client or server can
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lead to a buffer overrun. [CVE-2014-0195]
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Receipt of an invalid DTLS handshake on an OpenSSL DTLS client can lead the
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code to unnecessary recurse. [CVE-2014-0221]
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Carefully crafted handshake can force the use of weak keying material in
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OpenSSL SSL/TLS clients and servers. [CVE-2014-0224]
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Carefully crafted packets can lead to a NULL pointer deference in OpenSSL
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TLS client code if anonymous ECDH ciphersuites are enabled. [CVE-2014-3470]
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III. Impact
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A remote attacker may be able to run arbitrary code on a vulnerable client
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or server by sending invalid DTLS fragments to an OpenSSL DTLS client or
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server. [CVE-2014-0195]
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A remote attacker who can send an invalid DTLS handshake to an OpenSSL DTLS
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client can crash the remote OpenSSL DTLS client. [CVE-2014-0221]
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A remote attacker who can send a carefully crafted handshake can force the
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use of weak keying material between a vulnerable client and a vulnerable
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server and decrypt and/or modify traffic from the attacked client and
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server in a man-in-the-middle (MITM) attack. [CVE-2014-0224]
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A remote attacker who can send carefully crafted packets can cause OpenSSL
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TLS client to crash. [CVE-2014-3470]
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IV. Workaround
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No workaround is available.
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V. Solution
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Perform one of the following:
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1) Upgrade your vulnerable system to a supported FreeBSD stable or
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release / security branch (releng) dated after the correction date.
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2) To update your vulnerable system via a source code patch:
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The following patches have been verified to apply to the applicable
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FreeBSD release branches.
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a) Download the relevant patch from the location below, and verify the
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detached PGP signature using your PGP utility.
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[FreeBSD 10.0]
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# fetch http://security.FreeBSD.org/patches/SA-14:14/openssl-10.patch
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# fetch http://security.FreeBSD.org/patches/SA-14:14/openssl-10.patch.asc
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# gpg --verify openssl-10.patch.asc
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[FreeBSD 9.x and 8.x]
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# fetch http://security.FreeBSD.org/patches/SA-14:14/openssl-9.patch
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# fetch http://security.FreeBSD.org/patches/SA-14:14/openssl-9.patch.asc
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# gpg --verify openssl-9.patch.asc
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b) Apply the patch. Execute the following commands as root:
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# cd /usr/src
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# patch < /path/to/patch
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c) Recompile the operating system using buildworld and installworld as
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described in <URL:http://www.FreeBSD.org/handbook/makeworld.html>.
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Restart all deamons using the library, or reboot the system.
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3) To update your vulnerable system via a binary patch:
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Systems running a RELEASE version of FreeBSD on the i386 or amd64
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platforms can be updated via the freebsd-update(8) utility:
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# freebsd-update fetch
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# freebsd-update install
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VI. Correction details
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The following list contains the correction revision numbers for each
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affected branch.
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Branch/path Revision
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- -------------------------------------------------------------------------
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stable/8/ r267103
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releng/8.4/ r267104
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stable/9/ r267106
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releng/9.1/ r267104
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releng/9.2/ r267104
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stable/10/ r267103
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releng/10.0/ r267104
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- -------------------------------------------------------------------------
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To see which files were modified by a particular revision, run the
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following command, replacing NNNNNN with the revision number, on a
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machine with Subversion installed:
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# svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base
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Or visit the following URL, replacing NNNNNN with the revision number:
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<URL:http://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>
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VII. References
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<URL:http://www.openssl.org/news/secadv_20140605.txt>
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<URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0195>
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<URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0221>
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<URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0224>
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<URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3470>
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The latest revision of this advisory is available at
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<URL:http://security.FreeBSD.org/advisories/FreeBSD-SA-14:14.openssl.asc>
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