Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS / 16.10 : nss vulnerabilities (USN-3163-1)

Ubuntu Security Notice (C) 2017 Canonical, Inc. / NASL script (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing a security-related patch.

Description :

It was discovered that NSS incorrectly handled certain invalid
Diffie-Hellman keys. A remote attacker could possibly use this flaw to
cause NSS to crash, resulting in a denial of service. This issue only
applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
(CVE-2016-5285)

Hubert Kario discovered that NSS incorrectly handled Diffie Hellman
client key exchanges. A remote attacker could possibly use this flaw
to perform a small subgroup confinement attack and recover private
keys. This issue only applied to Ubuntu 12.04 LTS, Ubuntu 14.04 LTS
and Ubuntu 16.04 LTS. (CVE-2016-8635)

Franziskus Kiefer discovered that NSS incorrectly mitigated certain
timing side-channel attacks. A remote attacker could possibly use this
flaw to recover private keys. (CVE-2016-9074)

This update refreshes the NSS package to version 3.26.2 which includes
the latest CA certificate bundle.

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected libnss3 package.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.0
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 96304 ()

Bugtraq ID:

CVE ID: CVE-2016-5285
CVE-2016-8635
CVE-2016-9074

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