CVE-2019-15615 Auth bypass in Nextcloud Android
Attackers can bypass the Nextcloud Android app lock screen by changing the device system time to the past.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-15615?
CVE-2019-15615 is a medium-severity authentication bypass vulnerability in Nextcloud Android, 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 wrong check for the system time in the Android App 3.9.0 causes a bypass of the lock protection when changing the time of the system to the past.
Which versions are affected by CVE-2019-15615?
It affects 1 product.
Products include Nextcloud Nextcloud.
How do I fix CVE-2019-15615?
No fix has been published for CVE-2019-15615 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-2019-15615 being exploited?
There is no known exploitation of CVE-2019-15615 in the wild and no public exploit code.
Other vulnerabilities in Nextcloud Android
- CVE-2019-5454 SQL injection in com.nextcloud.client
- CVE-2021-43863 SQL Injection in FileContentProvider (GHSL-2021-1007)
- CVE-2019-5450 Cross-site scripting in com.nextcloud.client
- CVE-2019-5455 Auth bypass in com.nextcloud.client
- CVE-2021-22905 Information disclosure in Nextcloud Android App (com.nextcloud.client)
Sources
Also known as GHSA-68x5-pgwq-vm7v.