CVE-2021-41181 Nextcloud Talk app exposes chat messages on lockscreen
An attacker with physical access to a locked Android device can view chat messages and files if an incoming call is received.
- 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-2021-41181?
CVE-2021-41181 is a low-severity vulnerability in nextcloud security-advisories, published on 8 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Nextcloud talk is a self hosting messaging service. In versions prior to 12.3.0 the Nextcloud Android Talk application did not properly detect the lockscreen state when a call was incoming. If an attacker got physical access to the locked phone, and the victim received a phone call the attacker could gain access to the chat messages and files of the user. It is recommended that the Nextcloud Android Talk App is upgraded to 12.3.0. There are no known workarounds.
Which versions are affected by CVE-2021-41181?
It affects 1 product.
Products include Nextcloud Talk.
How do I fix CVE-2021-41181?
No fix has been published for CVE-2021-41181 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-41181 being exploited?
There is no known exploitation of CVE-2021-41181 in the wild and no public exploit code.
Other vulnerabilities in nextcloud security-advisories
- CVE-2020-8180 Code injection in Nextcloud Talk
- CVE-2021-32689 Nextcloud Talk not properly disassociating users from chats after account deletion
- CVE-2023-39957 Path traversal allows tricking the Talk Android app into writing files into it's root directory
- CVE-2021-32676 Session Fixation in Nextcloud Talk
- CVE-2021-39222 XSS in Talk
Sources
Also known as GHSA-497c-c8hx-6qcf.