Nextcloud Talk <=15.0.3 Vulnerability: Unauth Access to Members
CVE-2023-28845 Published on March 31, 2023
Chat room membership disclosed via autocompletion in Nextcloud talk
Nextcloud talk is a video & audio conferencing app for Nextcloud. In affected versions the talk app does not properly filter access to a conversations member list. As a result an attacker could use this vulnerability to gain information about the members of a Talk conversation, even if they themselves are not members. It is recommended that the Nextcloud Talk is upgraded to 14.0.9 or 15.0.4. There are no known workarounds for this vulnerability.
Vulnerability Analysis
CVE-2023-28845 can be exploited with network access, requires user interaction and a 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 Authorization Vulnerability?
The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CVE-2023-28845 has been classified to as an Authorization vulnerability or weakness.
Products Associated with CVE-2023-28845
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Affected Versions
nextcloud security-advisories:- Version >= 15.0.0, < 15.0.4 is affected.
- Version >= 14.0.0, < 14.0.9 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.