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Improper Certificate Validation


Severity High
Score 7.5/10


Improper validation of the Apple certificate URL in the Apple Game Center authentication adapter allows attackers to bypass authentication, making the server vulnerable to DoS attacks. The vulnerability has been fixed by improving the URL validation and adding additional checks of the resource the URL points to before downloading it. This vulnerability affects versions prior to 4.10.10, 5.0.x prior to 5.2.1 and 5.3.x prior to 5.3.0-alpha.8.

  • LOW
  • NONE
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  • HIGH

CWE-295 - Improper Certificate Validation

The authenticity component of a web system stems from the ability to validate “Digital certificates”, which (i) establish trust between two or more entities sharing data over a network; (ii) ensure data at rest and transit is secure from unauthorized access; and (iii) check the identity of the actors that interact with the system. An application with absent or ineffective certificate validation mechanisms allows malicious users, impersonating trusted hosts, to manipulate the communication path between the client and the host, resulting in unauthorized access to data and to the application’s internal environment, and potentially enabling man-in-the-middle attacks.

Advisory Timeline

  • Published