RHEL 7 : nettle (RHSA-2016:2582)

This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.


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.

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

Solution :

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

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.9
(CVSS2#E:POC/RL:OF/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 94545 ()

Bugtraq ID:

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

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