CVE-2022-39330 Database resource exhaustion for logged-in users via sharee recommendations with circles
A logged-in attacker can cause system slowdowns by generating excessive database and CPU load via sharee recommendations in the Circles app.
- 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-2022-39330?
CVE-2022-39330 is a medium-severity denial of service vulnerability in Nextcloud Nextcloud Server, published on 27 Oct 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 the file server software for Nextcloud, a self-hosted productivity platform. Nextcloud Server prior to versions 23.0.10 and 24.0.6 and Nextcloud Enterprise Server prior to versions 22.2.10, 23.0.10, and 24.0.6 are vulnerable to a logged-in attacker slowing down the system by generating a lot of database/cpu load. Nextcloud Server versions 23.0.10 and 24.0.6 and Nextcloud Enterprise Server versions 22.2.10, 23.0.10, and 24.0.6 contain patches for this issue. As a workaround, disable the Circles app.
Weakness: CWE-400
Which versions are affected by CVE-2022-39330?
It affects 2 products.
Products include Nextcloud Nextcloud Enterprise Server, Nextcloud Nextcloud Server.
How do I fix CVE-2022-39330?
No fix has been published for CVE-2022-39330 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-2022-39330 being exploited?
There is no known exploitation of CVE-2022-39330 in the wild and no public exploit code.
Other vulnerabilities in Nextcloud Nextcloud Server
- CVE-2022-36074 Authentication headers exposed on by Nextcloud Server
- CVE-2022-39364 Exception logging in Sharepoint app reveals clear-text connection details
- CVE-2022-39329 Profile of disabled user stays accessible
- CVE-2022-39211 Server-Side Request Forgery (SSRF) via potential filter bypass in Nextcloud Server
Sources
Also known as GHSA-wxx7-w5p4-7x4c.