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Test ID:
Category:CentOS Local Security Checks
Title:CentOS Update for openssl CESA-2016:0301 centos6
Summary:Check the version of openssl
Check the version of openssl

Vulnerability Insight:
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.

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.

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

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.

Affected Software/OS:
openssl on CentOS 6

Please Install the Updated Packages.

CVSS Score:

CVSS Vector:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2015-3197
BugTraq ID: 82237
BugTraq ID: 91787
CERT/CC vulnerability note: VU#257823
FreeBSD Security Advisory: FreeBSD-SA-16:12
SuSE Security Announcement: SUSE-SU-2016:0617 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:0620 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:0621 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:0624 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:0631 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:0641 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:0678 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:1057 (Google Search)
SuSE Security Announcement: openSUSE-SU-2016:0628 (Google Search)
SuSE Security Announcement: openSUSE-SU-2016:0637 (Google Search)
SuSE Security Announcement: openSUSE-SU-2016:0638 (Google Search)
SuSE Security Announcement: openSUSE-SU-2016:0640 (Google Search)
SuSE Security Announcement: openSUSE-SU-2016:0720 (Google Search)
SuSE Security Announcement: openSUSE-SU-2016:1239 (Google Search)
SuSE Security Announcement: openSUSE-SU-2016:1241 (Google Search)
Common Vulnerability Exposure (CVE) ID: CVE-2016-0702
Cisco Security Advisory: 20160302 Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: March 2016
Debian Security Information: DSA-3500 (Google Search)
HPdes Security Advisory: HPSBGN03563
RedHat Security Advisories: RHSA-2016:2957
SuSE Security Announcement: SUSE-SU-2016:1267 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:1290 (Google Search)
SuSE Security Announcement: SUSE-SU-2016:1360 (Google Search)
SuSE Security Announcement: openSUSE-SU-2016:0627 (Google Search)
SuSE Security Announcement: openSUSE-SU-2016:1242 (Google Search)
SuSE Security Announcement: openSUSE-SU-2016:1273 (Google Search)
SuSE Security Announcement: openSUSE-SU-2016:1566 (Google Search)
Common Vulnerability Exposure (CVE) ID: CVE-2016-0705
BugTraq ID: 83754
HPdes Security Advisory: HPSBGN03569
HPdes Security Advisory: HPSBMU03575
RedHat Security Advisories: RHSA-2018:2568
RedHat Security Advisories: RHSA-2018:2575
RedHat Security Advisories: RHSA-2018:2713
SuSE Security Announcement: openSUSE-SU-2016:1332 (Google Search)
Common Vulnerability Exposure (CVE) ID: CVE-2016-0797
BugTraq ID: 83763
Common Vulnerability Exposure (CVE) ID: CVE-2016-0800
BugTraq ID: 83733
CERT/CC vulnerability note: VU#583776
HPdes Security Advisory: HPSBMU03573
RedHat Security Advisories: RHSA-2016:1519
CopyrightCopyright (C) 2016 Greenbone Networks GmbH

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