CWE-253Incorrect Check of Function Return Value

Description

The product incorrectly checks a return value from a function, which prevents it from detecting errors or exceptional conditions.

Important and common functions will return some value about the success of its actions. This will alert the program whether or not to handle any errors caused by that function.

Common consequences

• Availability,Integrity→Unexpected State,DoS: Crash, Exit, or Restart
  An unexpected return value could place the system in a state that could lead to a crash or other unintended behaviors.

Potential mitigations

• Architecture and Design
  Use a language or compiler that uses exceptions and requires the catching of those exceptions.
• Implementation
  Properly check all functions which return a value.
• Implementation
  When designing any function make sure you return a value or throw an exception in case of an error.

Related CWEs

Recent CVEs classified under this CWE