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Amazon Linux AMI : nspr / nss-util,nss,nss-softokn (ALAS-2016-702)

high Nessus Plugin ID 91240

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Synopsis

The remote Amazon Linux AMI host is missing a security update.

Description

A use-after-free flaw was found in the way NSS handled DHE (DiffieHellman key exchange) and ECDHE (Elliptic Curve Diffie-Hellman key exchange) handshake messages. A remote attacker could send a specially crafted handshake message that, when parsed by an application linked against NSS, would cause that application to crash or, under certain special conditions, execute arbitrary code using the permissions of the user running the application. (CVE-2016-1978)

A use-after-free flaw was found in the way NSS processed certain DER (Distinguished Encoding Rules) encoded cryptographic keys. An attacker could use this flaw to create a specially crafted DER encoded certificate which, when parsed by an application compiled against the NSS library, could cause that application to crash, or execute arbitrary code using the permissions of the user running the application. (CVE-2016-1979)

Solution

Run 'yum update nspr' to update your system.

Run 'yum update nss-util' to update your system.

Run 'yum update nss' to update your system.

Run 'yum update nss-softokn' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2016-702.html

Plugin Details

Severity: High

ID: 91240

File Name: ala_ALAS-2016-702.nasl

Version: 2.4

Type: local

Agent: unix

Published: 5/19/2016

Updated: 4/18/2018

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

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

CVSS v3

Risk Factor: High

Base Score: 8.8

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:nspr-devel, p-cpe:/a:amazon:linux:nss-softokn, p-cpe:/a:amazon:linux:nss-util-devel, p-cpe:/a:amazon:linux:nss-util, p-cpe:/a:amazon:linux:nss-devel, p-cpe:/a:amazon:linux:nss-softokn-devel, p-cpe:/a:amazon:linux:nss-softokn-freebl, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:nss, p-cpe:/a:amazon:linux:nss-softokn-freebl-devel, p-cpe:/a:amazon:linux:nss-sysinit, p-cpe:/a:amazon:linux:nss-pkcs11-devel, p-cpe:/a:amazon:linux:nss-tools, p-cpe:/a:amazon:linux:nss-util-debuginfo, p-cpe:/a:amazon:linux:nspr, p-cpe:/a:amazon:linux:nss-debuginfo, p-cpe:/a:amazon:linux:nspr-debuginfo, p-cpe:/a:amazon:linux:nss-softokn-debuginfo

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

Patch Publication Date: 5/18/2016

Reference Information

CVE: CVE-2016-1978, CVE-2016-1979

ALAS: 2016-702