ID

VAR-201602-0272

CVE

CVE-2015-3197

TITLE

OpenSSL re-uses unsafe prime numbers in Diffie-Hellman protocol

DESCRIPTION

ssl/s2_srvr.c in OpenSSL 1.0.1 before 1.0.1r and 1.0.2 before 1.0.2f does not prevent use of disabled ciphers, which makes it easier for man-in-the-middle attackers to defeat cryptographic protection mechanisms by performing computations on SSLv2 traffic, related to the get_client_master_key and get_client_hello functions. OpenSSL may generate unsafe primes for use in the Diffie-Hellman protocol, which may lead to disclosure of enough information for an attacker to recover the private encryption key. OpenSSL is prone to a security-bypass vulnerability. Successfully exploiting this issue may allow attackers to perform unauthorized actions. This may lead to other attacks. Cisco Unified Computing System Central Software is prone to an arbitrary command-execution vulnerability. An attacker can exploit this issue to execute system commands on the underlying operating system. This issue being tracked by Cisco Bug ID CSCut46961. OpenSSL Security Advisory [28th Jan 2016] ========================================= NOTE: SUPPORT FOR VERSION 1.0.1 WILL BE ENDING ON 31ST DECEMBER 2016. NO SECURITY FIXES WILL BE PROVIDED AFTER THAT DATE. UNTIL THAT TIME SECURITY FIXES ONLY ARE BEING APPLIED. DH small subgroups (CVE-2016-0701) ================================== Severity: High Historically OpenSSL usually only ever generated DH parameters based on "safe" primes. More recently (in version 1.0.2) support was provided for generating X9.42 style parameter files such as those required for RFC 5114 support. The primes used in such files may not be "safe". Where an application is using DH configured with parameters based on primes that are not "safe" then an attacker could use this fact to find a peer's private DH exponent. This attack requires that the attacker complete multiple handshakes in which the peer uses the same private DH exponent. For example this could be used to discover a TLS server's private DH exponent if it's reusing the private DH exponent or it's using a static DH ciphersuite. OpenSSL provides the option SSL_OP_SINGLE_DH_USE for ephemeral DH (DHE) in TLS. It is not on by default. If the option is not set then the server reuses the same private DH exponent for the life of the server process and would be vulnerable to this attack. It is believed that many popular applications do set this option and would therefore not be at risk. OpenSSL before 1.0.2f will reuse the key if: - SSL_CTX_set_tmp_dh()/SSL_set_tmp_dh() is used and SSL_OP_SINGLE_DH_USE is not set. - SSL_CTX_set_tmp_dh_callback()/SSL_set_tmp_dh_callback() is used, and both the parameters and the key are set and SSL_OP_SINGLE_DH_USE is not used. This is an undocumted feature and parameter files don't contain the key. - Static DH ciphersuites are used. The key is part of the certificate and so it will always reuse it. This is only supported in 1.0.2. It will not reuse the key for DHE ciphers suites if: - SSL_OP_SINGLE_DH_USE is set - SSL_CTX_set_tmp_dh_callback()/SSL_set_tmp_dh_callback() is used and the callback does not provide the key, only the parameters. The callback is almost always used like this. Non-safe primes are generated by OpenSSL when using: - genpkey with the dh_rfc5114 option. This will write an X9.42 style file including the prime-order subgroup size "q". This is supported since the 1.0.2 version. Older versions can't read files generated in this way. - dhparam with the -dsaparam option. This has always been documented as requiring the single use. The fix for this issue adds an additional check where a "q" parameter is available (as is the case in X9.42 based parameters). This detects the only known attack, and is the only possible defense for static DH ciphersuites. This could have some performance impact. Additionally the SSL_OP_SINGLE_DH_USE option has been switched on by default and cannot be disabled. This could have some performance impact. This issue affects OpenSSL version 1.0.2. It is possible to generate parameters using non "safe" primes, but this option has always been documented as requiring single use and is not the default or believed to be common. However, as a precaution, the SSL_OP_SINGLE_DH_USE change has also been backported to 1.0.1r. This issue was reported to OpenSSL on 12 January 2016 by Antonio Sanso (Adobe). The fix was developed by Matt Caswell of the OpenSSL development team (incorporating some work originally written by Stephen Henson of the OpenSSL core team). This issue affects OpenSSL versions 1.0.2 and 1.0.1. OpenSSL 1.0.2 users should upgrade to 1.0.2f OpenSSL 1.0.1 users should upgrade to 1.0.1r This issue was reported to OpenSSL on 26th December 2015 by Nimrod Aviram and Sebastian Schinzel. The fix was developed by Nimrod Aviram with further development by Viktor Dukhovni of the OpenSSL development team. An update on DHE man-in-the-middle protection (Logjam) ==================================================================== A previously published vulnerability in the TLS protocol allows a man-in-the-middle attacker to downgrade vulnerable TLS connections using ephemeral Diffie-Hellman key exchange to 512-bit export-grade cryptography. This vulnerability is known as Logjam (CVE-2015-4000). OpenSSL added Logjam mitigation for TLS clients by rejecting handshakes with DH parameters shorter than 768 bits in releases 1.0.2b and 1.0.1n. This limit has been increased to 1024 bits in this release, to offer stronger cryptographic assurance for all TLS connections using ephemeral Diffie-Hellman key exchange. Note ==== As per our previous announcements and our Release Strategy (https://www.openssl.org/policies/releasestrat.html), support for OpenSSL version 1.0.1 will cease on 31st December 2016. No security updates for that version will be provided after that date. Users of 1.0.1 are advised to upgrade. Support for versions 0.9.8 and 1.0.0 ended on 31st December 2015. Those versions are no longer receiving security updates. References ========== URL for this Security Advisory: https://www.openssl.org/news/secadv/20160128.txt Note: the online version of the advisory may be updated with additional details over time. For details of OpenSSL severity classifications please see: https://www.openssl.org/policies/secpolicy.html . Description: Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised of the Apache HTTP Server, the Apache Tomcat Servlet container, Apache Tomcat Connector(mod_jk), JBoss HTTP Connector (mod_cluster), Hibernate, and the Tomcat Native library. Corrected: 2016-01-28 21:42:10 UTC (stable/10, 10.2-STABLE) 2016-01-30 06:12:03 UTC (releng/10.2, 10.2-RELEASE-p12) 2016-01-30 06:12:03 UTC (releng/10.1, 10.1-RELEASE-p29) 2016-01-30 06:09:38 UTC (stable/9, 9.3-STABLE) 2016-01-30 06:12:03 UTC (releng/9.3, 9.3-RELEASE-p36) CVE Name: CVE-2015-3197 For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit <URL:https://security.FreeBSD.org/>. Background FreeBSD includes software from the OpenSSL Project. II. III. Impact An active MITM attacker may be able to force a protocol downgrade to SSLv2, which is a flawed protocol and intercept the communication between client and server. IV. Workaround No workaround is available, but only applications that do not explicitly disable SSLv2 are affected. To determine if a server have SSLv2 enabled, a system administrator can use the following command: % openssl s_client -ssl2 -connect <host>:<port> </dev/null 2>&1 | grep DONE which will print "DONE" if and only if SSLv2 is enabled. Note that this check will not work for services that uses STARTTLS or DTLS. 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. Restart all deamons using the library, or reboot the system. 2) 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 Restart all deamons using the library, or reboot the system. 3) 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 10.2] # fetch https://security.FreeBSD.org/patches/SA-16:11/openssl-10.2.patch # fetch https://security.FreeBSD.org/patches/SA-16:11/openssl-10.2.patch.asc # gpg --verify openssl-10.2.patch.asc [FreeBSD 10.1] # fetch https://security.FreeBSD.org/patches/SA-16:11/openssl-10.1.patch # fetch https://security.FreeBSD.org/patches/SA-16:11/openssl-10.1.patch.asc # gpg --verify openssl-10.1.patch.asc [FreeBSD 9.3] # fetch https://security.FreeBSD.org/patches/SA-16:11/openssl-9.3.patch # fetch https://security.FreeBSD.org/patches/SA-16:11/openssl-9.3.patch.asc # gpg --verify openssl-9.3.patch.asc b) Apply the patch. Execute the following commands as root: # cd /usr/src # patch < /path/to/patch c) Recompile the operating system using buildworld and installworld as described in <URL:https://www.FreeBSD.org/handbook/makeworld.html>. Restart all deamons using the library, or reboot the system. VI. Correction details The following list contains the correction revision numbers for each affected branch. Branch/path Revision - ------------------------------------------------------------------------- stable/9/ r295060 releng/9.3/ r295061 stable/10/ r295016 releng/10.1/ r295061 releng/10.2/ r295061 - ------------------------------------------------------------------------- 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: <URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN> VII. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: openssl security update Advisory ID: RHSA-2016:0301-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-0301.html Issue date: 2016-03-01 CVE Names: CVE-2015-3197 CVE-2016-0702 CVE-2016-0705 CVE-2016-0797 CVE-2016-0800 ===================================================================== 1. Summary: Updated openssl packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6 and 7. Red Hat Product Security has rated this update as having Important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64 3. Description: OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols, as well as a full-strength, general purpose cryptography library. A padding oracle flaw was found in the Secure Sockets Layer version 2.0 (SSLv2) protocol. An attacker can potentially use this flaw to decrypt RSA-encrypted cipher text from a connection using a newer SSL/TLS protocol version, allowing them to decrypt such connections. This cross-protocol attack is publicly referred to as DROWN. (CVE-2016-0800) Note: This issue was addressed by disabling the SSLv2 protocol by default when using the 'SSLv23' connection methods, and removing support for weak SSLv2 cipher suites. For more information, refer to the knowledge base article linked to in the References section. A flaw was found in the way malicious SSLv2 clients could negotiate SSLv2 ciphers that have been disabled on the server. This could result in weak SSLv2 ciphers being used for SSLv2 connections, making them vulnerable to man-in-the-middle attacks. (CVE-2015-3197) A side-channel attack was found that makes use of cache-bank conflicts on the Intel Sandy-Bridge microarchitecture. An attacker who has the ability to control code in a thread running on the same hyper-threaded core as the victim's thread that is performing decryption, could use this flaw to recover RSA private keys. (CVE-2016-0702) A double-free flaw was found in the way OpenSSL parsed certain malformed DSA (Digital Signature Algorithm) private keys. An attacker could create specially crafted DSA private keys that, when processed by an application compiled against OpenSSL, could cause the application to crash. (CVE-2016-0705) An integer overflow flaw, leading to a NULL pointer dereference or a heap-based memory corruption, was found in the way some BIGNUM functions of OpenSSL were implemented. Applications that use these functions with large untrusted input could crash or, potentially, execute arbitrary code. (CVE-2016-0797) Red Hat would like to thank the OpenSSL project for reporting these issues. Upstream acknowledges Nimrod Aviram and Sebastian Schinzel as the original reporters of CVE-2016-0800 and CVE-2015-3197; Adam Langley (Google/BoringSSL) as the original reporter of CVE-2016-0705; Yuval Yarom (University of Adelaide and NICTA), Daniel Genkin (Technion and Tel Aviv University), Nadia Heninger (University of Pennsylvania) as the original reporters of CVE-2016-0702; and Guido Vranken as the original reporter of CVE-2016-0797. All openssl users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1301846 - CVE-2015-3197 OpenSSL: SSLv2 doesn't block disabled ciphers 1310593 - CVE-2016-0800 SSL/TLS: Cross-protocol attack on TLS using SSLv2 (DROWN) 1310596 - CVE-2016-0705 OpenSSL: Double-free in DSA code 1310599 - CVE-2016-0702 OpenSSL: Side channel attack on modular exponentiation 1311880 - CVE-2016-0797 OpenSSL: BN_hex2bn/BN_dec2bn NULL pointer deref/heap corruption 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: openssl-1.0.1e-42.el6_7.4.src.rpm i386: openssl-1.0.1e-42.el6_7.4.i686.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.i686.rpm x86_64: openssl-1.0.1e-42.el6_7.4.i686.rpm openssl-1.0.1e-42.el6_7.4.x86_64.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.i686.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: openssl-debuginfo-1.0.1e-42.el6_7.4.i686.rpm openssl-devel-1.0.1e-42.el6_7.4.i686.rpm openssl-perl-1.0.1e-42.el6_7.4.i686.rpm openssl-static-1.0.1e-42.el6_7.4.i686.rpm x86_64: openssl-debuginfo-1.0.1e-42.el6_7.4.i686.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.x86_64.rpm openssl-devel-1.0.1e-42.el6_7.4.i686.rpm openssl-devel-1.0.1e-42.el6_7.4.x86_64.rpm openssl-perl-1.0.1e-42.el6_7.4.x86_64.rpm openssl-static-1.0.1e-42.el6_7.4.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: openssl-1.0.1e-42.el6_7.4.src.rpm x86_64: openssl-1.0.1e-42.el6_7.4.i686.rpm openssl-1.0.1e-42.el6_7.4.x86_64.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.i686.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): x86_64: openssl-debuginfo-1.0.1e-42.el6_7.4.i686.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.x86_64.rpm openssl-devel-1.0.1e-42.el6_7.4.i686.rpm openssl-devel-1.0.1e-42.el6_7.4.x86_64.rpm openssl-perl-1.0.1e-42.el6_7.4.x86_64.rpm openssl-static-1.0.1e-42.el6_7.4.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: openssl-1.0.1e-42.el6_7.4.src.rpm i386: openssl-1.0.1e-42.el6_7.4.i686.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.i686.rpm openssl-devel-1.0.1e-42.el6_7.4.i686.rpm ppc64: openssl-1.0.1e-42.el6_7.4.ppc.rpm openssl-1.0.1e-42.el6_7.4.ppc64.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.ppc.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.ppc64.rpm openssl-devel-1.0.1e-42.el6_7.4.ppc.rpm openssl-devel-1.0.1e-42.el6_7.4.ppc64.rpm s390x: openssl-1.0.1e-42.el6_7.4.s390.rpm openssl-1.0.1e-42.el6_7.4.s390x.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.s390.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.s390x.rpm openssl-devel-1.0.1e-42.el6_7.4.s390.rpm openssl-devel-1.0.1e-42.el6_7.4.s390x.rpm x86_64: openssl-1.0.1e-42.el6_7.4.i686.rpm openssl-1.0.1e-42.el6_7.4.x86_64.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.i686.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.x86_64.rpm openssl-devel-1.0.1e-42.el6_7.4.i686.rpm openssl-devel-1.0.1e-42.el6_7.4.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: openssl-debuginfo-1.0.1e-42.el6_7.4.i686.rpm openssl-perl-1.0.1e-42.el6_7.4.i686.rpm openssl-static-1.0.1e-42.el6_7.4.i686.rpm ppc64: openssl-debuginfo-1.0.1e-42.el6_7.4.ppc64.rpm openssl-perl-1.0.1e-42.el6_7.4.ppc64.rpm openssl-static-1.0.1e-42.el6_7.4.ppc64.rpm s390x: openssl-debuginfo-1.0.1e-42.el6_7.4.s390x.rpm openssl-perl-1.0.1e-42.el6_7.4.s390x.rpm openssl-static-1.0.1e-42.el6_7.4.s390x.rpm x86_64: openssl-debuginfo-1.0.1e-42.el6_7.4.x86_64.rpm openssl-perl-1.0.1e-42.el6_7.4.x86_64.rpm openssl-static-1.0.1e-42.el6_7.4.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: openssl-1.0.1e-42.el6_7.4.src.rpm i386: openssl-1.0.1e-42.el6_7.4.i686.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.i686.rpm openssl-devel-1.0.1e-42.el6_7.4.i686.rpm x86_64: openssl-1.0.1e-42.el6_7.4.i686.rpm openssl-1.0.1e-42.el6_7.4.x86_64.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.i686.rpm openssl-debuginfo-1.0.1e-42.el6_7.4.x86_64.rpm openssl-devel-1.0.1e-42.el6_7.4.i686.rpm openssl-devel-1.0.1e-42.el6_7.4.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: openssl-debuginfo-1.0.1e-42.el6_7.4.i686.rpm openssl-perl-1.0.1e-42.el6_7.4.i686.rpm openssl-static-1.0.1e-42.el6_7.4.i686.rpm x86_64: openssl-debuginfo-1.0.1e-42.el6_7.4.x86_64.rpm openssl-perl-1.0.1e-42.el6_7.4.x86_64.rpm openssl-static-1.0.1e-42.el6_7.4.x86_64.rpm Red Hat Enterprise Linux Client (v. 7): Source: openssl-1.0.1e-51.el7_2.4.src.rpm x86_64: openssl-1.0.1e-51.el7_2.4.x86_64.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.i686.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.x86_64.rpm openssl-libs-1.0.1e-51.el7_2.4.i686.rpm openssl-libs-1.0.1e-51.el7_2.4.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: openssl-debuginfo-1.0.1e-51.el7_2.4.i686.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.x86_64.rpm openssl-devel-1.0.1e-51.el7_2.4.i686.rpm openssl-devel-1.0.1e-51.el7_2.4.x86_64.rpm openssl-perl-1.0.1e-51.el7_2.4.x86_64.rpm openssl-static-1.0.1e-51.el7_2.4.i686.rpm openssl-static-1.0.1e-51.el7_2.4.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: openssl-1.0.1e-51.el7_2.4.src.rpm x86_64: openssl-1.0.1e-51.el7_2.4.x86_64.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.i686.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.x86_64.rpm openssl-libs-1.0.1e-51.el7_2.4.i686.rpm openssl-libs-1.0.1e-51.el7_2.4.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): x86_64: openssl-debuginfo-1.0.1e-51.el7_2.4.i686.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.x86_64.rpm openssl-devel-1.0.1e-51.el7_2.4.i686.rpm openssl-devel-1.0.1e-51.el7_2.4.x86_64.rpm openssl-perl-1.0.1e-51.el7_2.4.x86_64.rpm openssl-static-1.0.1e-51.el7_2.4.i686.rpm openssl-static-1.0.1e-51.el7_2.4.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: openssl-1.0.1e-51.el7_2.4.src.rpm ppc64: openssl-1.0.1e-51.el7_2.4.ppc64.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.ppc.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.ppc64.rpm openssl-devel-1.0.1e-51.el7_2.4.ppc.rpm openssl-devel-1.0.1e-51.el7_2.4.ppc64.rpm openssl-libs-1.0.1e-51.el7_2.4.ppc.rpm openssl-libs-1.0.1e-51.el7_2.4.ppc64.rpm ppc64le: openssl-1.0.1e-51.el7_2.4.ppc64le.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.ppc64le.rpm openssl-devel-1.0.1e-51.el7_2.4.ppc64le.rpm openssl-libs-1.0.1e-51.el7_2.4.ppc64le.rpm s390x: openssl-1.0.1e-51.el7_2.4.s390x.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.s390.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.s390x.rpm openssl-devel-1.0.1e-51.el7_2.4.s390.rpm openssl-devel-1.0.1e-51.el7_2.4.s390x.rpm openssl-libs-1.0.1e-51.el7_2.4.s390.rpm openssl-libs-1.0.1e-51.el7_2.4.s390x.rpm x86_64: openssl-1.0.1e-51.el7_2.4.x86_64.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.i686.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.x86_64.rpm openssl-devel-1.0.1e-51.el7_2.4.i686.rpm openssl-devel-1.0.1e-51.el7_2.4.x86_64.rpm openssl-libs-1.0.1e-51.el7_2.4.i686.rpm openssl-libs-1.0.1e-51.el7_2.4.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): ppc64: openssl-debuginfo-1.0.1e-51.el7_2.4.ppc.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.ppc64.rpm openssl-perl-1.0.1e-51.el7_2.4.ppc64.rpm openssl-static-1.0.1e-51.el7_2.4.ppc.rpm openssl-static-1.0.1e-51.el7_2.4.ppc64.rpm ppc64le: openssl-debuginfo-1.0.1e-51.el7_2.4.ppc64le.rpm openssl-perl-1.0.1e-51.el7_2.4.ppc64le.rpm openssl-static-1.0.1e-51.el7_2.4.ppc64le.rpm s390x: openssl-debuginfo-1.0.1e-51.el7_2.4.s390.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.s390x.rpm openssl-perl-1.0.1e-51.el7_2.4.s390x.rpm openssl-static-1.0.1e-51.el7_2.4.s390.rpm openssl-static-1.0.1e-51.el7_2.4.s390x.rpm x86_64: openssl-debuginfo-1.0.1e-51.el7_2.4.i686.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.x86_64.rpm openssl-perl-1.0.1e-51.el7_2.4.x86_64.rpm openssl-static-1.0.1e-51.el7_2.4.i686.rpm openssl-static-1.0.1e-51.el7_2.4.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: openssl-1.0.1e-51.el7_2.4.src.rpm x86_64: openssl-1.0.1e-51.el7_2.4.x86_64.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.i686.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.x86_64.rpm openssl-devel-1.0.1e-51.el7_2.4.i686.rpm openssl-devel-1.0.1e-51.el7_2.4.x86_64.rpm openssl-libs-1.0.1e-51.el7_2.4.i686.rpm openssl-libs-1.0.1e-51.el7_2.4.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: openssl-debuginfo-1.0.1e-51.el7_2.4.i686.rpm openssl-debuginfo-1.0.1e-51.el7_2.4.x86_64.rpm openssl-perl-1.0.1e-51.el7_2.4.x86_64.rpm openssl-static-1.0.1e-51.el7_2.4.i686.rpm openssl-static-1.0.1e-51.el7_2.4.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2015-3197 https://access.redhat.com/security/cve/CVE-2016-0702 https://access.redhat.com/security/cve/CVE-2016-0705 https://access.redhat.com/security/cve/CVE-2016-0797 https://access.redhat.com/security/cve/CVE-2016-0800 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/articles/2176731 https://drownattack.com/ http://cachebleed.info/ https://openssl.org/news/secadv/20160128.txt https://openssl.org/news/secadv/20160301.txt 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2016 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFW1cCGXlSAg2UNWIIRAorHAKChVpnVB6Gpd8xZP0iwtVrS2A0ZUACgsKbz L7tzxRcDJUDUTN4/LCedKTE= =loec -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . 4 ELS) - i386, x86_64 3. It was discovered that the SSLv2 servers using OpenSSL accepted SSLv2 connection handshakes that indicated non-zero clear key length for non-export cipher suites. An attacker could use a SSLv2 server using OpenSSL as a Bleichenbacher oracle. A denial of service flaw was found in the way OpenSSL handled SSLv2 handshake messages

AFFECTED PRODUCTS