Video Frame Leakage in Nextcloud Talk 13.0.7/14.0.3 (CVE-2022-39212)
CVE-2022-39212 Published on September 17, 2022
Last video frame is still sent after video is disabled in a call in Nextcloud Talk
Nextcloud Talk is an open source chat, video & audio calls client for the Nextcloud platform. In affected versions an attacker could see the last video frame of any participant who has video disabled but a camera selected. It is recommended that the Nextcloud Talk app is upgraded to 13.0.8 or 14.0.4. Users unable to upgrade should select "None" as camera before joining the call.
Vulnerability Analysis
CVE-2022-39212 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Weakness Type
What is an Information Disclosure Vulnerability?
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CVE-2022-39212 has been classified to as an Information Disclosure vulnerability or weakness.
Products Associated with CVE-2022-39212
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Affected Versions
nextcloud security-advisories:- Version < 13.0.8 is affected.
- Version >= 14.0.0, < 14.0.4 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.