Issued:

2016-11-03

Updated:

2016-11-03

RHSA-2016:2582 - Moderate: nettle security and bug fix update

Synopsis

Moderate: nettle security and bug fix update

Type/Severity

Security Advisory Moderate

Topic

An update for nettle is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

Updated Packages

• nettle-2.7.1-8.el7.x86_64.rpm
• nettle-debuginfo-2.7.1-8.el7.ppc64.rpm
• nettle-debuginfo-2.7.1-8.el7.x86_64.rpm
• nettle-debuginfo-2.7.1-8.el7.ppc64le.rpm
• nettle-2.7.1-8.el7.i686.rpm
• nettle-2.7.1-8.el7.ppc.rpm
• nettle-devel-2.7.1-8.el7.aarch64.rpm
• nettle-debuginfo-2.7.1-8.el7.s390x.rpm
• nettle-debuginfo-2.7.1-8.el7.ppc.rpm
• nettle-devel-2.7.1-8.el7.ppc.rpm
• nettle-2.7.1-8.el7.s390.rpm
• nettle-devel-2.7.1-8.el7.ppc64le.rpm
• nettle-debuginfo-2.7.1-8.el7.s390.rpm
• nettle-2.7.1-8.el7.aarch64.rpm
• nettle-devel-2.7.1-8.el7.s390.rpm
• nettle-devel-2.7.1-8.el7.x86_64.rpm
• nettle-2.7.1-8.el7.src.rpm
• nettle-devel-2.7.1-8.el7.s390x.rpm
• nettle-2.7.1-8.el7.s390x.rpm
• nettle-debuginfo-2.7.1-8.el7.aarch64.rpm
• nettle-devel-2.7.1-8.el7.i686.rpm
• nettle-devel-2.7.1-8.el7.ppc64.rpm
• nettle-2.7.1-8.el7.ppc64le.rpm
• nettle-2.7.1-8.el7.ppc64.rpm
• nettle-debuginfo-2.7.1-8.el7.i686.rpm

Fixes

• This content is not included.BZ - 1252936
• This content is not included.BZ - 1304303
• This content is not included.BZ - 1304379
• This content is not included.BZ - 1304382
• This content is not included.BZ - 1362016

CVEs

• CVE-2015-8803
• CVE-2015-8804
• CVE-2015-8805
• CVE-2016-6489

References

• https://access.redhat.com/security/updates/classification/#moderate

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.