Detections
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Amazon Linux 2023 : runc (ALAS2023-2026-1419)

critical Nessus Plugin ID 299566

Synopsis

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

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1419 advisory.

 net/http: memory exhaustion in Request.ParseForm (CVE-2025-61726)

 archive/zip: denial of service when parsing arbitrary ZIP archives (CVE-2025-61728)

 crypto/tls: handshake messages may be processed at the incorrect encryption level (CVE-2025-61730)

 crypto/tls: Config.Clone copies automatically generated session ticket keys, session resumption does not account for the expiration of full certificate chain (CVE-2025-68121)

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 runc --releasever 2023.10.20260216' or or 'dnf update --advisory ALAS2023-2026-1419 --releasever 2023.10.20260216' to update your system.

See Also

https://alas.aws.amazon.com//AL2023/ALAS2023-2026-1419.html

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

https://explore.alas.aws.amazon.com/CVE-2025-61726.html

https://explore.alas.aws.amazon.com/CVE-2025-61728.html

https://explore.alas.aws.amazon.com/CVE-2025-61730.html

https://explore.alas.aws.amazon.com/CVE-2025-68121.html

Plugin Details

Severity: Critical

ID: 299566

File Name: al2023_ALAS2023-2026-1419.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2/19/2026

Updated: 2/19/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.2

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2025-68121

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 9

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

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

Vulnerability Information

CPE: cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:runc, p-cpe:/a:amazon:linux:runc-debuginfo, p-cpe:/a:amazon:linux:runc-debugsource

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/18/2026

Vulnerability Publication Date: 1/22/2026

Reference Information

CVE: CVE-2025-61726, CVE-2025-61728, CVE-2025-61730, CVE-2025-68121

IAVB: 2026-B-0016-S