Permissions Bypass in Nextcloud Guests App 2.x before 2.4.1/2.5.1/3.0.1
CVE-2024-22402 Published on January 18, 2024
Improper handling of request URLs in Nextcloud Guests app allows guest users to bypass app allowlist
Nextcloud guests app is a utility to create guest users which can only see files shared with them. In affected versions users were able to load the first page of apps they were actually not allowed to access. Depending on the selection of apps installed this may present a permissions bypass. It is recommended that the Guests app is upgraded to 2.4.1, 2.5.1 or 3.0.1. There are no known workarounds for this vulnerability.
Vulnerability Analysis
CVE-2024-22402 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 and integrity, and no impact on availability.
Weakness Type
Improper Preservation of Permissions
The software does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.
Products Associated with CVE-2024-22402
Want to know whenever a new CVE is published for Nextcloud Guests? stack.watch will email you.
Affected Versions
nextcloud security-advisories:- Version >= 2.4.0, < 2.4.1 is affected.
- Version >= 2.5.0, < 2.5.1 is affected.
- Version >= 3.0.0, < 3.0.1 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.