CVE-2023-45148

Name of the Vulnerable Software and Affected Versions Nextcloud versions prior to 25.0.11 Nextcloud versions prior to 26.0.6 Nextcloud versions prior to 27.1.0

Description The issue is related to the use of Memcached as memcache.distributed in Nextcloud, which can cause the rate limiting on the server to be reset unexpectedly, leading to the rate count being reset earlier than intended. This can be exploited by a remote attacker to cause a denial of service.

Recommendations For versions prior to 25.0.11, upgrade to version 25.0.11 or later. For versions prior to 26.0.6, upgrade to version 26.0.6 or later. For versions prior to 27.1.0, upgrade to version 27.1.0 or later. As a temporary workaround for users unable to upgrade, change the config setting memcache.distributed to OCMemcacheRedis and install Redis instead of Memcached.