CAPEC-474 — Signature Spoofing by Key Theft
CAPEC-474: Signature Spoofing by Key Theft
MITRE CAPEC attack pattern
| Status | Draft |
| Typical severity | High |
| Likelihood of attack | Medium |
| Catalogue | CAPEC 3.9 (2023-01-24) |
Description
An attacker obtains an authoritative or reputable signer's private signature key by theft and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
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-522
ATT&CK techniques: T1552.004
Prerequisites
- An authoritative or reputable signer is storing their private signature key with insufficient protection.
Skills required
- Low: Knowledge of common location methods and access methods to sensitive data
- High: Ability to compromise systems containing sensitive data
Mitigations
- Restrict access to private keys from non-supervisory accounts
- Restrict access to administrative personnel and processes only
- Ensure all remote methods are secured
- Ensure all services are patched and up to date