Detections
Analytics

Amazon Linux AMI : openvpn (ALAS-2016-750) (SWEET32)

medium Nessus Plugin ID 93745

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Synopsis

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

Description

Ciphers with 64-bit block sizes used in CBC mode were found to be vulnerable to a birthday attack when key renegotiation doesn't happen frequently or at all in long running connections. The blowfish cipher as used in OpenVPN by default is vulnerable to this attack, allowing a remote attacker to recover partial plaintext information (XOR of two plaintext blocks).

Solution

Run 'yum update openvpn' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2016-750.html

Plugin Details

Severity: Medium

ID: 93745

File Name: ala_ALAS-2016-750.nasl

Version: 2.6

Type: local

Agent: unix

Published: 9/28/2016

Updated: 12/5/2022

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

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

CVSS v3

Risk Factor: Medium

Base Score: 5.9

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:openvpn, p-cpe:/a:amazon:linux:openvpn-debuginfo, cpe:/o:amazon:linux

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

Patch Publication Date: 9/27/2016

Reference Information

CVE: CVE-2016-6329

ALAS: 2016-750