CVE-2019-15612 Auth bypass in Nextcloud Server
Attackers can bypass two-factor authentication during password resets, potentially taking over user accounts on Nextcloud Server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-15612?
CVE-2019-15612 is a medium-severity authentication bypass vulnerability in Nextcloud Nextcloud Server, published on 4 Feb 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A bug in Nextcloud Server 15.0.2 causes pending 2FA logins to not be correctly expired when the password of the user is reset.
Weakness: CWE-384
Which versions are affected by CVE-2019-15612?
It affects 1 product.
Products include Nextcloud Nextcloud Server.
How do I fix CVE-2019-15612?
No fix has been published for CVE-2019-15612 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2019-15612 being exploited?
There is no known exploitation of CVE-2019-15612 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-782m-gpwm-4xfq.