Improper input validator in Nextcloud Server prior to 12.0.3 and 11.0.5 could lead to an attackers actions not being logged in the audit log.
Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Nextcloud_server | Nextcloud | 11.0.0 (including) | 11.0.5 (excluding) |
| Nextcloud_server | Nextcloud | 12.0.0 (including) | 12.0.3 (excluding) |
While logging all information may be helpful during development stages, it is important that logging levels be set appropriately before a product ships so that sensitive user data and system information are not accidentally exposed to potential attackers. Different log files may be produced and stored for: