CVE-2018-3775 Auth bypass in Nextcloud Server
Attackers with valid credentials can bypass two-factor authentication in Nextcloud Server, leading to unauthorized account access.
- 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-2018-3775?
CVE-2018-3775 is a high-severity authentication bypass vulnerability in Nextcloud Nextcloud Server, published on 12 Aug 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Improper Authentication in Nextcloud Server prior to version 12.0.3 would allow an attacker that obtained user credentials to bypass the 2 Factor Authentication.
Weakness: CWE-287
Which versions are affected by CVE-2018-3775?
It affects 1 product.
Products include Nextcloud Nextcloud Server.
How do I fix CVE-2018-3775?
No fix has been published for CVE-2018-3775 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-2018-3775 being exploited?
There is no known exploitation of CVE-2018-3775 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-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
- CVE-2021-32656 Trusted servers exchange can be triggered by attacker
Sources
Also known as GHSA-2v55-qcx6-c482.