388 – Insecure authentication method - NTLM
Description
The application uses the Legacy NTLM authentication protocol which can be vulnerable to several security flaws, including Relay attacks, Man in the Middle and brute force to obtain valid challenge results.
Impact
Obtain valid challenges to impersonate application users.
Recommendation
Avoid and restrict the use of NTLM as authentication mechanism, in favor of more recent and secure alternatives such as Kerberos, Smart Cards, OAuth, Bearer Authentication, forms, JWT, among others.
Threat
Anonymous attacker from adjacent network performing a MitM.
Expected Remediation Time
Score 4.0
Default score using CVSS 4.0. It may change depending on the context of the src.
Base 4.0
- Attack vector: A
- Attack complexity: H
- Attack Requirements: N
- Privileges required: N
- User interaction: A
- Confidentiality (VC): L
- Integrity (VI): L
- Availability (VA): N
- Confidentiality (SC): N
- Integrity (SI): N
- Availability (SA): N
Threat 4.0
- Exploit maturity: P