CVE-2022-24741 High memory usage in Nextcloud server
An attacker can cause a denial of service by uploading specially crafted files that exhaust server memory and CPU resources.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2022-24741?
CVE-2022-24741 is a low-severity denial of service vulnerability in Nextcloud Nextcloud Server, published on 9 Mar 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Nextcloud server is an open source, self hosted cloud style services platform. In affected versions an attacker can cause a denial of service by uploading specially crafted files which will cause the server to allocate too much memory / CPU. It is recommended that the Nextcloud Server is upgraded to 21.0.8 , 22.2.4 or 23.0.1. Users unable to upgrade should disable preview generation with the `'enable_previews'` config flag.
Which versions are affected by CVE-2022-24741?
It affects 1 product.
Products include Nextcloud Nextcloud Server.
How do I fix CVE-2022-24741?
No fix has been published for CVE-2022-24741 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-24741 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-24741 exists.
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-jf3h-xf4q-mh89.