CVE-2024-52520: Nextcloud Server < 28.0.10 SSRF via HEAD (Open-Graph)
CVE-2024-52520 Published on November 15, 2024
Nextcloud Server's link reference provider can be tricked into downloading bigger files than intended
Nextcloud Server is a self hosted personal cloud system. Due to a pre-flighted HEAD request, the link reference provider could be tricked into downloading bigger websites than intended, to find open-graph data. It is recommended that the Nextcloud Server is upgraded to 28.0.10 or 29.0.7 and Nextcloud Enterprise Server is upgraded to 27.1.11.8, 28.0.10 or 29.0.7.
Vulnerability Analysis
CVE-2024-52520 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 no impact on confidentiality and integrity, and a high impact on availability.
Weakness Types
What is a Resource Exhaustion Vulnerability?
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
CVE-2024-52520 has been classified to as a Resource Exhaustion vulnerability or weakness.
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2024-52520 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2024-52520
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Affected Versions
nextcloud security-advisories:- Version >= 28.0.0, < 28.0.10 is affected.
- Version >= 29.0.0, < 29.0.7 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.