CVE-2020-8295 Denial of service in Nextcloud Server
An attacker can cause a denial of service by exploiting a flawed check during the password reset process in Nextcloud Server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-8295?
CVE-2020-8295 is a high-severity denial of service vulnerability in Nextcloud Nextcloud Server, published on 26 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A wrong check in Nextcloud Server 19 and prior allowed to perform a denial of service attack when resetting the password for a user.
Weakness: CWE-400
Which versions are affected by CVE-2020-8295?
It affects 1 product.
Products include Nextcloud Nextcloud Server.
How do I fix CVE-2020-8295?
Upgrade to a fixed version.
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-2020-8295 being exploited?
There is no known exploitation of CVE-2020-8295 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-m9wc-h684-m6rq.