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Amazon Linux 2 : gstreamer1-plugins-base (ALAS-2026-4093)

medium Nessus Plugin ID 379878

Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of gstreamer1-plugins-base installed on the remote host is prior to 1.18.4-5. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-4093 advisory.

 A flaw was found in GStreamer's gst-plugins-base MicroDVD subtitle parser. When processing a specially crafted subtitle file, the parser may dereference a NULL pointer, causing the application to crash when a user opens or plays media with a malformed MicroDVD (.sub) subtitle file. (CVE-2026-119842)

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 gstreamer1-plugins-base' or or 'yum update --advisory ALAS2-2026-4093' to update your system.

See Also

https://alas.aws.amazon.com//AL2/ALAS2-2026-4093.html

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

https://explore.alas.aws.amazon.com/CVE-2026-119842.html

Plugin Details

Severity: Medium

ID: 379878

File Name: al2_ALAS-2026-4093.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 11/12/2026

Updated: 11/12/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.81

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-119842

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/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: cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:gstreamer1-plugins-base-debuginfo, p-cpe:/a:amazon:linux:gstreamer1-plugins-base-devel, p-cpe:/a:amazon:linux:gstreamer1-plugins-base-tools, p-cpe:/a:amazon:linux:gstreamer1-plugins-base

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/12/2026

Vulnerability Publication Date: 10/30/2026

Reference Information

CVE: CVE-2026-119842