Amazon Linux 2023 Security Advisory: ALAS2023-2026-2121
Advisory Released Date: 2026-08-31
Advisory Updated Date: 2026-08-31
GStreamer MRF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of MRF files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29510. (CVE-2026-18295)
A flaw was found in the GStreamer gst-plugins-good package. The rtph264depay and rtph265depay RTP depayloader elements do not enforce a maximum size limit on the reassembly buffer used during fragmented RTP packet processing. A remote, unauthenticated attacker can send a continuous stream of RTP fragments without ever transmitting an end-of-fragment marker, causing the reassembly buffer to grow without bound until process memory is exhausted. This results in a denial of service through process termination. (CVE-2026-18649)
Affected Packages:
gstreamer1-plugins-good
Issue Correction:
Run dnf update gstreamer1-plugins-good --releasever 2023.12.20260831 or dnf update --advisory ALAS2023-2026-2121 --releasever 2023.12.20260831 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
aarch64:
gstreamer1-plugins-good-gtk-debuginfo-1.24.10-1.amzn2023.0.8.aarch64
gstreamer1-plugins-good-gtk-1.24.10-1.amzn2023.0.8.aarch64
gstreamer1-plugins-good-debuginfo-1.24.10-1.amzn2023.0.8.aarch64
gstreamer1-plugins-good-debugsource-1.24.10-1.amzn2023.0.8.aarch64
gstreamer1-plugins-good-1.24.10-1.amzn2023.0.8.aarch64
src:
gstreamer1-plugins-good-1.24.10-1.amzn2023.0.8.src
x86_64:
gstreamer1-plugins-good-gtk-debuginfo-1.24.10-1.amzn2023.0.8.x86_64
gstreamer1-plugins-good-gtk-1.24.10-1.amzn2023.0.8.x86_64
gstreamer1-plugins-good-debuginfo-1.24.10-1.amzn2023.0.8.x86_64
gstreamer1-plugins-good-debugsource-1.24.10-1.amzn2023.0.8.x86_64
gstreamer1-plugins-good-1.24.10-1.amzn2023.0.8.x86_64