CVE-2023-45148 Rate limiter not working reliable when Memcached is installed in Nextcloud
Attackers can bypass rate limiting protections in Nextcloud when Memcached is configured, potentially enabling brute-force attacks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-45148?
CVE-2023-45148 is a medium-severity vulnerability in Nextcloud Nextcloud Server, published on 16 Oct 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Nextcloud is an open source home cloud server. When Memcached is used as `memcache.distributed` the rate limiting in Nextcloud Server could be reset unexpectedly resetting the rate count earlier than intended. Users are advised to upgrade to versions 25.0.11, 26.0.6 or 27.1.0. Users unable to upgrade should change their config setting `memcache.distributed` to `\OC\Memcache\Redis` and install Redis instead of Memcached.
Weakness: CWE-307
Which versions are affected by CVE-2023-45148?
It affects 1 product.
Products include Nextcloud Nextcloud Server.
How do I fix CVE-2023-45148?
No fix has been published for CVE-2023-45148 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-45148 being exploited?
There is no known exploitation of CVE-2023-45148 in the wild and no public exploit code.
Other vulnerabilities in Nextcloud Nextcloud Server
- CVE-2021-32802 Preview generation used third-party library not suited for user-generated content in Nextcloud server
- CVE-2023-26482 Scope of workflow operations is not validated in nextcloud server
- CVE-2018-3775 Auth bypass in Nextcloud Server
- CVE-2023-35172 Nextcloud Server password reset endpoint is not brute force protected
- CVE-2023-32320 Nextcloud Server's brute force protection allows someone to send more requests than intended
Sources
Also known as GHSA-xmhp-7vr4-hp63.