Nextcloud Server <24.0.10/25.0.4: Unintended File Download (CVE-2023-28844)
CVE-2023-28844 Published on March 31, 2023
User without download rights can download older version of that file in nextcloud server
Nextcloud server is an open source home cloud implementation. In affected versions users that should not be able to download a file can still download an older version and use that for uncontrolled distribution. This issue has been addressed in versions 24.0.10 and 25.0.4. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Vulnerability Analysis
CVE-2023-28844 is exploitable 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 high impact on confidentiality, with no 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-2023-28844 has been classified to as an Authorization vulnerability or weakness.
Products Associated with CVE-2023-28844
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Affected Versions
nextcloud security-advisories:- Version >= 25.0.0, < 25.0.4 is affected.
- Version < 24.0.10 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.