CWE-354: Improper Validation of Integrity Check Value
Weakness ID: 354
The software does not validate or incorrectly validates the integrity check values or "checksums" of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.
Improper validation of checksums before use results in an unnecessary risk that can easily be mitigated. The protocol specification describes the algorithm used for calculating the checksum. It is then a simple matter of implementing the calculation and verifying that the calculated checksum and the received checksum match. Improper verification of the calculated checksum and the received checksum can lead to far greater consequences.
Time of Introduction
Architecture and Design
Technical Impact: Modify application
Integrity checks usually use a secret key that helps authenticate the
data origin. Skipping integrity checking generally opens up the
possibility that new data from an invalid source can be injected.
Technical Impact: Other
Data that is parsed and used may be corrupted.
Technical Impact: Hide activities; Other
Without a checksum check, it is impossible to determine if any changes
have been made to the data after it was sent.