Detections
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Amazon Linux 2 : gstreamer1-plugins-good, --advisory ALAS2-2026-3788 (ALAS-2026-3788)
high Nessus Plugin ID 325568
Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of gstreamer1-plugins-good installed on the remote host is prior to 1.18.4-6. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3788 advisory.Heap buffer overflow in the Matroska (MKV) demuxer when calculating decompressed buffer sizes for bz2-compressed tracks. The issue occurs due to missing parentheses in the buffer size calculation, causing incorrect memory allocation and potential out-of-bounds writes. (from https://gstreamer.freedesktop.org/security/sa-2026-0022.html) (CVE-2026-39043)
An integer overflow in the WAV parser (wavparse) when handling malformed WAV files with cue chunks. The vulnerability occurs during buffer size validation when calculating the expected size for cue entries (ncues * 24), where insufficient bounds checking allows integer overflow during the multiplication operation. (from https://gstreamer.freedesktop.org/security/sa-2026-0021.html) (CVE-2026-39044)
A flaw was found in GStreamer's WavPack audio decoder in gst-plugins-good. When processing a specially crafted WavPack file, an integer overflow in the buffer size calculation (4 * block_samples * channels) in gst_wavpack_dec_handle_frame() causes a very small heap allocation. The WavPack library then writes decoded audio samples far beyond the allocated buffer, resulting in heap memory corruption. This affects both 32-bit and 64-bit systems since the arithmetic is performed in 32-bit integers before promotion to the allocation size type. A remote attacker could use this flaw to crash an application or potentially execute arbitrary code by convincing a user to open a malicious WavPack audio file. (CVE-2026-53705)
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 'yum update gstreamer1-plugins-good' or or 'yum update --advisory ALAS2-2026-3788' to update your system.See Also
https://alas.aws.amazon.com//AL2/ALAS2-2026-3788.html
https://alas.aws.amazon.com/faqs.html
https://explore.alas.aws.amazon.com/CVE-2026-39043.html
Plugin Details
Severity: High
ID: 325568
File Name: al2_ALAS-2026-3788.nasl
Version: 1.1
Type: Local
Agent: unix
Published: 7/8/2026
Updated: 7/8/2026
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: Medium
Score: 4.9
Percentile: 57.96
CVSS v2
Risk Factor: High
Base Score: 9
Temporal Score: 6.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:C
CVSS Score Source: CVE-2026-53705
CVSS v3
Risk Factor: High
Base Score: 7.6
Temporal Score: 6.6
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/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:gstreamer1-plugins-good, p-cpe:/a:amazon:linux:gstreamer1-plugins-good-gtk, p-cpe:/a:amazon:linux:gstreamer1-plugins-good-debuginfo
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 7/8/2026
Vulnerability Publication Date: 5/22/2026