193 lines
7.6 KiB
Text
193 lines
7.6 KiB
Text
-----BEGIN PGP SIGNED MESSAGE-----
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Hash: SHA512
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=============================================================================
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FreeBSD-SA-14:18.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: 2014-09-09
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Affects: All supported versions of FreeBSD.
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Corrected: 2014-08-07 21:04:42 UTC (stable/10, 10.0-STABLE)
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2014-09-09 10:09:46 UTC (releng/10.0, 10.0-RELEASE-p8)
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2014-08-07 21:06:34 UTC (stable/9, 9.3-STABLE)
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2014-09-09 10:13:46 UTC (releng/9.3, 9.3-RELEASE-p1)
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2014-09-09 10:13:46 UTC (releng/9.2, 9.2-RELEASE-p11)
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2014-09-09 10:13:46 UTC (releng/9.1, 9.1-RELEASE-p18)
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2014-08-07 21:06:34 UTC (stable/8, 8.4-STABLE)
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2014-09-09 10:13:46 UTC (releng/8.4, 8.4-RELEASE-p15)
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CVE Name: CVE-2014-3506, CVE-2014-3507, CVE-2014-3508, CVE-2014-3510,
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CVE-2014-3509, CVE-2014-3511, CVE-2014-3512, CVE-2014-5139
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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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The receipt of a specifically crafted DTLS handshake message may cause OpenSSL
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to consume large amounts of memory. [CVE-2014-3506]
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The receipt of a specifically crafted DTLS packet could cause OpenSSL to leak
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memory. [CVE-2014-3507]
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A flaw in OBJ_obj2txt may cause pretty printing functions such as
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X509_name_oneline, X509_name_print_ex et al. to leak some information from
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the stack. [CVE-2014-3508]
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OpenSSL DTLS clients enabling anonymous (EC)DH ciphersuites are subject to
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a denial of service attack. [CVE-2014-3510]
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The following problems affect FreeBSD 10.0-RELEASE and later:
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If a multithreaded client connects to a malicious server using a resumed
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session and the server sends an ec point format extension it could write
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up to 255 bytes to freed memory. [CVE-2014-3509]
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A flaw in the OpenSSL SSL/TLS server code causes the server to negotiate
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TLS 1.0 instead of higher protocol versions when the ClientHello message
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is badly fragmented. [CVE-2014-3511]
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A malicious client or server can send invalid SRP parameters and overrun
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an internal buffer. [CVE-2014-3512]
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A malicious server can crash the client with a NULL pointer dereference by
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specifying a SRP ciphersuite even though it was not properly negotiated
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with the client. [CVE-2014-5139]
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III. Impact
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A remote attacker may be able to cause a denial of service (application
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crash, large memory consumption), obtain additional information,
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cause protocol downgrade. Additionally, a remote attacker may be able
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to run arbitrary code on a vulnerable system if the application has been
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set up for SRP.
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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-14:18/openssl-10.0.patch
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# fetch http://security.FreeBSD.org/patches/SA-14:18/openssl-10.0.patch.asc
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# gpg --verify openssl-10.0.patch.asc
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[FreeBSD 9.3]
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# fetch http://security.FreeBSD.org/patches/SA-14:18/openssl-9.3.patch
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# fetch http://security.FreeBSD.org/patches/SA-14:18/openssl-9.3.patch.asc
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# gpg --verify openssl-9.3.patch.asc
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[FreeBSD 9.2, 9.1, 8.4]
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# fetch http://security.FreeBSD.org/patches/SA-14:18/openssl-9.patch
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# fetch http://security.FreeBSD.org/patches/SA-14:18/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/ r269687
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releng/8.4/ r271305
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stable/9/ r269687
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releng/9.1/ r271305
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releng/9.2/ r271305
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releng/9.3/ r271305
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stable/10/ r269686
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releng/10.0/ r271304
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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:https://www.openssl.org/news/secadv_20140806.txt>
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<URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3506>
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<URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3507>
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<URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3508>
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<URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3509>
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<URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3510>
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<URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3511>
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<URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-3512>
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<URL:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-5139>
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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-14:18.openssl.asc>
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