Amazon Linux 2 : gstreamer-plugins-bad-free, --advisory ALAS2-2026-3830 (ALAS-2026-3830)

high Nessus Plugin ID 331991

Synopsis

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

Description

The version of gstreamer-plugins-bad-free installed on the remote host is prior to 0.10.23-42. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3830 advisory.

A heap buffer overflow vulnerability was found in GStreamer's rfbsrc plugin. When a client connects to a malicious RFB/VNC server that advertises a 16bpp framebuffer and sends Hextile-encoded updates, the Hextile background fill path writes 32-bit pixel values into a buffer allocated for 16-bit pixels. This type mismatch causes an out-of-bounds heap write that can lead to denial of service (process crash) and potential memory corruption. (CVE-2026-59691)

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 gstreamer-plugins-bad-free' or or 'yum update --advisory ALAS2-2026-3830' to update your system.

Plugin Details

Severity: High

ID: 331991

File Name: al2_ALAS-2026-3830.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 8/4/2026

Updated: 8/4/2026

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: 3.5

Percentile: 51.89

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

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

CVSS Score Source: CVE-2026-59691

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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:gstreamer-plugins-bad-free-debuginfo, p-cpe:/a:amazon:linux:gstreamer-plugins-bad-free-devel-docs, p-cpe:/a:amazon:linux:gstreamer-plugins-bad-free-devel, p-cpe:/a:amazon:linux:gstreamer-plugins-bad-free

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/4/2026

Vulnerability Publication Date: 7/9/2026

Reference Information

CVE: CVE-2026-59691

Detections

Analytics