RHEL 7 : nettle (RHSA-2016:2582)

High Nessus Plugin ID 94545

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

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.

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

Update the affected nettle, nettle-debuginfo and / or nettle-devel packages.

See Also

https://www.redhat.com/security/data/cve/CVE-2015-8803.html

https://www.redhat.com/security/data/cve/CVE-2015-8804.html

https://www.redhat.com/security/data/cve/CVE-2015-8805.html

https://www.redhat.com/security/data/cve/CVE-2016-6489.html

http://www.nessus.org/u?e4086253

http://rhn.redhat.com/errata/RHSA-2016-2582.html

Plugin Details

Severity: High

ID: 94545

File Name: redhat-RHSA-2016-2582.nasl

Version: $Revision: 2.3 $

Type: local

Published: 2016/11/04

Modified: 2017/01/10

Dependencies: 12634

Risk Information

Risk Factor: High

CVSSv2

Base Score: 7.5

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:POC/RL:OF/RC:ND

CVSSv3

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:X

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:nettle, p-cpe:/a:redhat:enterprise_linux:nettle-debuginfo, p-cpe:/a:redhat:enterprise_linux:nettle-devel, cpe:/o:redhat:enterprise_linux:7

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2016/11/03

Reference Information

CVE: CVE-2015-8803, CVE-2015-8804, CVE-2015-8805, CVE-2016-6489

OSVDB: 134093, 134094, 134095, 142565

RHSA: 2016:2582