CAPEC-475 — Signature Spoofing by Improper Validation
CAPEC-475: Signature Spoofing by Improper Validation
MITRE CAPEC attack pattern
| Status | Draft |
| Typical severity | High |
| Likelihood of attack | Low |
| Catalogue | CAPEC 3.9 (2023-01-24) |
Description
An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.
Where this sits in the chain
A finding maps to a weakness (CWE), a weakness is exploited by an attack pattern (CAPEC), and an attack pattern shows up in ATT&CK as observed adversary behaviour. This page is the middle hop.
Weaknesses exploited: CWE-295, CWE-327, CWE-347
Prerequisites
- Recipient is using a weak cryptographic signature verification algorithm or a weak implementation of a cryptographic signature verification algorithm, or the configuration of the recipient's application accepts the use of keys generated using cryptographically weak signature verification algorithms.
Skills required
- High: Cryptanalysis of signature verification algorithm
- High: Reverse engineering and cryptanalysis of signature verification algorithm implementation
Mitigations
- Use programs and products that contain cryptographic elements that have been thoroughly tested for flaws in the signature verification routines.