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Amazon Linux 2023 : gnutls, gnutls-c++, gnutls-dane (ALAS2023-2025-958)

medium Nessus Plugin ID 235908

Synopsis

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

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-958 advisory.

 A flaw was found in GnuTLS, which relies on libtasn1 for ASN.1 data processing. Due to an inefficient algorithm in libtasn1, decoding certain DER-encoded certificate data can take excessive time, leading to increased resource consumption. This flaw allows a remote attacker to send a specially crafted certificate, causing GnuTLS to become unresponsive or slow, resulting in a denial-of-service condition.
 (CVE-2024-12243)

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 'dnf update gnutls --releasever 2023.7.20250428' to update your system.

See Also

https://alas.aws.amazon.com/AL2023/ALAS-2025-958.html

https://alas.aws.amazon.com/cve/html/CVE-2024-12243.html

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

Plugin Details

Severity: Medium

ID: 235908

File Name: al2023_ALAS2023-2025-958.nasl

Version: 1.1

Type: local

Agent: unix

Published: 5/13/2025

Updated: 5/13/2025

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.9

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2024-12243

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:gnutls-c%2b%2b-debuginfo, p-cpe:/a:amazon:linux:gnutls-debuginfo, p-cpe:/a:amazon:linux:gnutls-debugsource, p-cpe:/a:amazon:linux:gnutls-utils, p-cpe:/a:amazon:linux:gnutls-utils-debuginfo, p-cpe:/a:amazon:linux:gnutls-dane-debuginfo, p-cpe:/a:amazon:linux:gnutls-devel, p-cpe:/a:amazon:linux:gnutls-dane, cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:gnutls, p-cpe:/a:amazon:linux:gnutls-c%2b%2b

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/13/2025

Vulnerability Publication Date: 12/12/2023

Reference Information

CVE: CVE-2024-12243