// For flags

CVE-2021-41181

Nextcloud Talk app exposes chat messages on lockscreen

Severity Score

2.4
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Nextcloud talk es un servicio de mensajería autogestionado. En versiones anteriores a la 12.3.0 la aplicación Nextcloud Android Talk no detectaba correctamente el estado de la pantalla de bloqueo cuando se recibía una llamada. Si un atacante conseguía acceder físicamente al teléfono bloqueado, y la víctima recibía una llamada, el atacante podía acceder a los mensajes y archivos del chat del usuario. Se recomienda actualizar la aplicación Nextcloud Android Talk a la versión 12.3.0. No se presentan medidas de mitigación conocidas

*Credits: N/A
CVSS Scores
Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-09-15 CVE Reserved
  • 2022-03-08 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-11-21 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-287: Improper Authentication
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Nextcloud
Search vendor "Nextcloud"
Talk
Search vendor "Nextcloud" for product "Talk"
< 12.3.0
Search vendor "Nextcloud" for product "Talk" and version " < 12.3.0"
android
Affected