Vulnerability Details CVE-2023-28833
Nextcloud server is an open source home cloud implementation. In affected versions admins of a server were able to upload a logo or a favicon and to provided a file name which was not restricted and could overwrite files in the appdata directory. Administrators may have access to overwrite these files by other means but this method could be exploited by tricking an admin into uploading a maliciously named file. It is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. Users unable to upgrade should avoid ingesting logo files from untrusted sources.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 37.0%
CVSS Severity
CVSS v3 Score 2.4
References
Products affected by CVE-2023-28833
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cpe:2.3:a:nextcloud:nextcloud_server:23.0.0
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cpe:2.3:a:nextcloud:nextcloud_server:23.0.12.11
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cpe:2.3:a:nextcloud:nextcloud_server:23.0.12.12
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cpe:2.3:a:nextcloud:nextcloud_server:23.0.12.5
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cpe:2.3:a:nextcloud:nextcloud_server:23.0.12.6
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cpe:2.3:a:nextcloud:nextcloud_server:23.0.12.7
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cpe:2.3:a:nextcloud:nextcloud_server:23.0.12.8
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cpe:2.3:a:nextcloud:nextcloud_server:23.0.12.9
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cpe:2.3:a:nextcloud:nextcloud_server:24.0.0
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cpe:2.3:a:nextcloud:nextcloud_server:24.0.9
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cpe:2.3:a:nextcloud:nextcloud_server:25.0.0
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cpe:2.3:a:nextcloud:nextcloud_server:25.0.2
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cpe:2.3:a:nextcloud:nextcloud_server:25.0.3