CAPEC Definitions / CAPEC-485
CAPEC-485: Signature Spoofing by Key Recreation
An attacker obtains an authoritative or reputable signer's private signature key by exploiting a cryptographic weakness in the signature algorithm or pseudorandom number generation and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
Extended Description
No Extended Description.
Mitigations
Ensure cryptographic elements have been sufficiently tested for weaknesses.
Relationships with other CAPECs
CAPEC-473: Signature Spoof
Prerequisites
An authoritative signer is using a weak method of random number generation or weak signing software that causes key leakage or permits key inference.
An authoritative signer is using a signature algorithm with a direct weakness or with poorly chosen parameters that enable the key to be recovered using signatures from that signer.
Related Weaknesses
CWE-330: Use of Insufficiently Random Values
