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Amazon Linux 2023 : openssl, openssl-devel, openssl-libs (ALAS2023-2024-520)

medium Nessus Plugin ID 190742

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Synopsis

The remote Amazon Linux 2023 host is missing a security update.

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2024-520 advisory.

 A flaw was found in OpenSSL. When the EVP_PKEY_public_check() function is called in RSA public keys, a computation is done to confirm that the RSA modulus, n, is composite. For valid RSA keys, n is a product of two or more large primes and this computation completes quickly. However, if n is a large prime, this computation takes a long time. An application that calls EVP_PKEY_public_check() and supplies an RSA key obtained from an untrusted source could be vulnerable to a Denial of Service attack. (CVE-2023-6237)

 Processing a maliciously formatted PKCS12 file may lead OpenSSL to crash leading to a potential Denial of Service attack

 The package openssl098e is provided purely for binary compatibility with older Amazon Linux versions. It does not receive security updates. (CVE-2024-0727)

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

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

Solution

Run 'dnf update openssl --releasever 2023.3.20240219' to update your system.

See Also

https://alas.aws.amazon.com/AL2023/ALAS-2024-520.html

https://alas.aws.amazon.com/cve/html/CVE-2023-6237.html

https://alas.aws.amazon.com/cve/html/CVE-2024-0727.html

https://alas.aws.amazon.com/faqs.html

Plugin Details

Severity: Medium

ID: 190742

File Name: al2023_ALAS2023-2024-520.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2/20/2024

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: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

CVSS Score Source: CVE-2024-0727

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:openssl-debugsource, p-cpe:/a:amazon:linux:openssl-perl, p-cpe:/a:amazon:linux:openssl-snapsafe-libs-debuginfo, p-cpe:/a:amazon:linux:openssl-snapsafe-libs, p-cpe:/a:amazon:linux:openssl-libs-debuginfo, p-cpe:/a:amazon:linux:openssl-devel, p-cpe:/a:amazon:linux:openssl-debuginfo, p-cpe:/a:amazon:linux:openssl, cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:openssl-libs

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/15/2024

Vulnerability Publication Date: 11/6/2023

Reference Information

CVE: CVE-2023-6237, CVE-2024-0727

IAVA: 2024-A-0121-S