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Amazon Linux AMI : openssl (ALAS-2021-1541)

high Nessus Plugin ID 153863

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Synopsis

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

Description

The version of openssl installed on the remote host is prior to 1.0.2k-16.154. It is, therefore, affected by a vulnerability as referenced in the ALAS-2021-1541 advisory.

 It was found that openssl assumed ASN.1 strings to be NUL terminated. A malicious actor may be able to force an application into calling openssl function with a specially crafted, non-NUL terminated string to deliberately hit this bug, which may result in a crash of the application, causing a Denial of Service attack, or possibly, memory disclosure. The highest threat from this vulnerability is to data confidentiality and system availability. (CVE-2021-3712)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Run 'yum update openssl' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2021-1541.html

https://access.redhat.com/security/cve/CVE-2021-3712

Plugin Details

Severity: High

ID: 153863

File Name: ala_ALAS-2021-1541.nasl

Version: 1.4

Type: local

Agent: unix

Published: 10/4/2021

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

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

CVSS Score Source: CVE-2021-3712

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:openssl-perl, p-cpe:/a:amazon:linux:openssl-static, p-cpe:/a:amazon:linux:openssl-devel, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:openssl-debuginfo, p-cpe:/a:amazon:linux:openssl

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/1/2021

Vulnerability Publication Date: 2/16/2021

Reference Information

CVE: CVE-2021-3712

ALAS: 2021-1541

IAVA: 2021-A-0395-S