TalkTalk 3.3.6 Android App contains improper access control vulnerabilities in multiple API endpoints. By modifying request parameters, attackers may obtain sensitive user information (such as device identifiers and birthdays) and access private group information, including join credentials. Successful exploitation may result in privacy breaches and unauthorized access to restricted resources.
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
Access control involves the use of several protection mechanisms such as:
When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses: