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Gentoo Linux Security Advisory 201612-16

Gentoo Linux Security Advisory 201612-16
Posted Dec 7, 2016
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201612-16 - Multiple vulnerabilities have been found in OpenSSL, the worst of which allows attackers to conduct a time based side-channel attack. Versions less than 1.0.2j are affected.

tags | advisory, vulnerability
systems | linux, gentoo
advisories | CVE-2016-2105, CVE-2016-2106, CVE-2016-2107, CVE-2016-2108, CVE-2016-2109, CVE-2016-2176, CVE-2016-2177, CVE-2016-2178, CVE-2016-2180, CVE-2016-2183, CVE-2016-6304, CVE-2016-6305, CVE-2016-6306, CVE-2016-7052
SHA-256 | 267f0c13083d309d4f011bd2771d90788d5f04ad963b99fcd180d27463f73d7a

Gentoo Linux Security Advisory 201612-16

Change Mirror Download

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Gentoo Linux Security Advisory GLSA 201612-16
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https://security.gentoo.org/
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Severity: Normal
Title: OpenSSL: Multiple vulnerabilities
Date: December 07, 2016
Bugs: #581234, #585142, #585276, #591454, #592068, #592074,
#592082, #594500, #595186
ID: 201612-16

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Synopsis
========

Multiple vulnerabilities have been found in OpenSSL, the worst of which
allows attackers to conduct a time based side-channel attack.

Background
==========

OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer
(SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general
purpose cryptography library.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/openssl < 1.0.2j >= 1.0.2j

Description
===========

Multiple vulnerabilities have been discovered in OpenSSL. Please review
the CVE identifiers and the International Association for Cryptologic
Research's (IACR) paper, "Make Sure DSA Signing Exponentiations Really
are Constant-Time" for further details.

Impact
======

Remote attackers could cause a Denial of Service condition or have
other unspecified impacts. Additionally, a time based side-channel
attack may allow a local attacker to recover a private DSA key.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All OpenSSL users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/openssl-1.0.2j"

References
==========

[ 1 ] CVE-2016-2105
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2105
[ 2 ] CVE-2016-2106
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2106
[ 3 ] CVE-2016-2107
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2107
[ 4 ] CVE-2016-2108
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2108
[ 5 ] CVE-2016-2109
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2109
[ 6 ] CVE-2016-2176
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2176
[ 7 ] CVE-2016-2177
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2177
[ 8 ] CVE-2016-2178
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2178
[ 9 ] CVE-2016-2180
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2180
[ 10 ] CVE-2016-2183
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2183
[ 11 ] CVE-2016-6304
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-6304
[ 12 ] CVE-2016-6305
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-6305
[ 13 ] CVE-2016-6306
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-6306
[ 14 ] CVE-2016-7052
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-7052
[ 15 ] Make Sure DSA Signing Exponentiations Really are Constant-Time
http://eprint.iacr.org/2016/594.pdf

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/201612-16

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2016 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5


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