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Joined: 12 May 2004
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PostPosted: Wed Dec 07, 2016 11:26 am    Post subject: [ GLSA 201612-16 ] OpenSSL Reply with quote

Gentoo Linux Security Advisory

Title: OpenSSL: Multiple vulnerabilities (GLSA 201612-16)
Severity: normal
Exploitable: local, remote
Date: December 07, 2016
Bug(s): #581234, #585142, #585276, #591454, #592068, #592074, #592082, #594500, #595186
ID: 201612-16

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: dev-libs/openssl
Vulnerable: < 1.0.2j
Unaffected: >= 1.0.2j
Architectures: All supported architectures


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


References

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
Make Sure DSA Signing
Exponentiations Really are Constant-Time
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