A logic vulnerability was found in GStreamer's webrtcbin component. The _check_sdp_crypto() function contains an inverted boolean condition that causes it to accept remote SDP offers or answers that lack the required a=fingerprint attribute, while incorrectly rejecting those that include it. An attacker with the ability to intercept and modify WebRTC signaling messages could exploit this to bypass the SDP-level DTLS certificate fingerprint binding, weakening defenses against man-in-the-middle attacks on media streams.

A logic vulnerability was found in GStreamer's webrtcbin component. The _check_sdp_crypto() function contains an inverted boolean condition that causes it to accept remote SDP offers or answers that lack the required a=fingerprint attribute, while incorrectly rejecting those that include it. An attacker with the ability to intercept and modify WebRTC signaling messages could exploit this to bypass the SDP-level DTLS certificate fingerprint binding, weakening defenses against man-in-the-middle attacks on media streams.

Affected: openEuler:20.03-LTS-SP4: gstreamer1-plugins-bad-free, openEuler:22.03-LTS-SP4: gstreamer1-plugins-bad-free, openEuler:24.03-LTS-SP1: gstreamer1-plugins-bad-free, openEuler:24.03-LTS-SP3: gstreamer1-plugins-bad-free, openEuler:24.03-LTS-SP4: gstreamer1-plugins-bad-free

GStreamer is a pipeline-based multi media framework that links together a wide variety of media processing systems to complete complex workflows, based on graphs of filters which operate on media data. This package contains plug-ins that are not tested well enough yet, or the code is not of good enough quality. Security Fix(es):

A logic vulnerability was found in GStreamer's webrtcbin component. The _check_sdp_crypto() function contains an inverted boolean condition that causes it to accept remote SDP offers or answers that lack the required a=fingerprint attribute, while incorrectly rejecting those that include it. An attacker with the ability to intercept and modify WebRTC signaling messages could exploit this to bypass the SDP-level DTLS certificate fingerprint binding, weakening defenses against man-in-the-middle attacks on media streams.(CVE-2026-14935)

A stack buffer overflow vulnerability was found in GStreamer's DTLS plugin. During a DTLS handshake, the peer certificate Subject Distinguished Name is printed into a fixed-size 2048-byte stack buffer without bounds checking. A remote unauthenticated attacker can send a certificate with an oversized Subject DN that exceeds the buffer, causing a stack buffer overflow and process crash, resulting in denial of service.(CVE-2026-59692)

Security update for gstreamer-plugins-bad

Security update for gstreamer-plugins-bad

Affected: Ubuntu:Pro:14.04:LTS: gst-plugins-bad1.0, Ubuntu:Pro:16.04:LTS: gst-plugins-bad1.0, Ubuntu:Pro:18.04:LTS: gst-plugins-bad1.0, Ubuntu:Pro:20.04:LTS: gst-plugins-bad1.0, Ubuntu:Pro:22.04:LTS: gst-plugins-bad1.0, Ubuntu:Pro:24.04:LTS: gst-plugins-bad1.0, Ubuntu:25.10: gst-plugins-bad1.0, Ubuntu:26.04:LTS: gst-plugins-bad1.0

A logic vulnerability was found in GStreamer's webrtcbin component. The _check_sdp_crypto() function contains an inverted boolean condition that causes it to accept remote SDP offers or answers that lack the required a=fingerprint attribute, while incorrectly rejecting those that include it. An attacker with the ability to intercept and modify WebRTC signaling messages could exploit this to bypass the SDP-level DTLS certificate fingerprint binding, weakening defenses against man-in-the-middle attacks on media streams.

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in GStreamer ausnutzen, um Sicherheitsvorkehrungen zu umgehen.