nettle security update

CentOS Errata and Security Advisory CESA-2016:2582

Nettle is a cryptographic library that is designed to fit easily in almost any context: In cryptographic toolkits for object-oriented languages, such as C++, Python, or Pike, in applications like lsh or GnuPG, or even in kernel space.

Security Fix(es):

• Multiple flaws were found in the way nettle implemented elliptic curve scalar multiplication. These flaws could potentially introduce cryptographic weaknesses into nettle’s functionality. (CVE-2015-8803, CVE-2015-8804, CVE-2015-8805)

• It was found that nettle’s RSA and DSA decryption code was vulnerable to cache-related side channel attacks. An attacker could use this flaw to recover the private key from a co-located virtual-machine instance. (CVE-2016-6489)

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.3 Release Notes linked from the References section.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-cr-announce/2016-November/029645.html

Affected packages:
nettle
nettle-devel

Upstream details at:
https://access.redhat.com/errata/RHSA-2016:2582