Nextcloud Server Auth Bypass: External Storage Credentials Mod (<=27.1.0)
CVE-2023-48303 Published on November 21, 2023
Nextcloud Server admins can change authentication details of user configured external storage
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Server and Nextcloud Enterprise Server, admins can change authentication details of user configured external storage. Nextcloud Server and Nextcloud Enterprise Server versions 25.0.11, 26.0.6, and 27.1.0 contain a patch for this issue. No known workarounds are available.
Vulnerability Analysis
CVE-2023-48303 can be exploited with network access, requires user interaction and 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 no impact on confidentiality and integrity, and a small impact on 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-2023-48303 has been classified to as an Authorization vulnerability or weakness.
Products Associated with CVE-2023-48303
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Affected Versions
nextcloud security-advisories:- Version >= 25.0.0, < 25.0.11 is affected.
- Version >= 26.0.0, < 26.0.6 is affected.
- Version >= 27.0.0, < 27.1.0 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.