04b880b25a
Fix OpenSSL multiple vulnerabilities. [13:03] Fix BIND remote denial of service. [13:04] Security: CVE-2013-0166, CVE-2013-0169 Security: FreeBSD-SA-13:03.openssl Security: CVE-2013-2266 Security: FreeBSD-SA-13:04.bind
126 lines
4.5 KiB
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126 lines
4.5 KiB
Text
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=============================================================================
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FreeBSD-SA-13:03.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: 2013-04-02
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Affects: All supported versions of FreeBSD.
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Corrected: 2013-03-08 17:28:40 UTC (stable/8, 8.3-STABLE)
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2013-04-02 17:34:42 UTC (releng/8.3, 8.3-RELEASE-p7)
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2013-03-14 17:48:07 UTC (stable/9, 9.1-STABLE)
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2013-04-02 17:34:42 UTC (releng/9.0, 9.0-RELEASE-p7)
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2013-04-02 17:34:42 UTC (releng/9.1, 9.1-RELEASE-p2)
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CVE Name: CVE-2013-0166, CVE-2013-0169
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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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A flaw in the OpenSSL handling of OCSP response verification could be exploited
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to cause a denial of service attack. [CVE-2013-0166]
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OpenSSL has a weakness in the handling of CBC ciphersuites in SSL, TLS and
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DTLS. The weakness could reveal plaintext in a timing attack. [CVE-2013-0169]
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III. Impact
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The Denial of Service could be caused in the OpenSSL server application by
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using an invalid key. [CVE-2013-0166]
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A remote attacker could recover sensitive information by conducting
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an attack via statistical analysis of timing data with crafted packets.
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[CVE-2013-0169]
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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 dated after the correction
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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 8.3 and 9.0]
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# fetch http://security.FreeBSD.org/patches/SA-13:03/openssl.patch
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# fetch http://security.FreeBSD.org/patches/SA-13:03/openssl.patch.asc
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# gpg --verify openssl.patch.asc
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[FreeBSD 9.1]
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# fetch http://security.FreeBSD.org/patches/SA-13:03/openssl-9.1.patch
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# fetch http://security.FreeBSD.org/patches/SA-13:03/openssl-9.1.patch.asc
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# gpg --verify openssl-9.1.patch.asc
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b) 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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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 the all deamons using the library, or reboot your 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 revision numbers of each file that was
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corrected in FreeBSD.
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Branch/path Revision
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- -------------------------------------------------------------------------
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stable/8/ r248057
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releng/8.3/ r249029
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stable/9/ r248272
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releng/9.0/ r249029
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releng/9.1/ r249029
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- -------------------------------------------------------------------------
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VII. References
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CVE Name:
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-0169
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-0166
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The latest revision of this advisory is available at
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http://security.FreeBSD.org/advisories/FreeBSD-SA-13:03.openssl.asc
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