Sicherheit: Mehrere Probleme in OpenSSL - Pro-Linux

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=====================================================================
                   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.
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