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Insecure functionality - Pass the hash

Description​

It is possible to use the Pass The Hash technique to access resources within the domain.

Impact​

Use account hashes to access domain resources.

Recommendation​

Implement monitoring policies to detect the use of lateral movement techniques such as Pass The Hash.

Threat​

Attacker from internal network without authentication with domain user hashes.

Expected Remediation Time​

⌚ 60 minutes.

Score​

Default score using CVSS 3.1. It may change depending on the context of the vulnerability.

Base​

  • Attack vector: A
  • Attack complexity: H
  • Privileges required: N
  • User interaction: N
  • Scope: U
  • Confidentiality: H
  • Integrity: H
  • Availability: N

Temporal​

  • Exploit code madurity: X
  • Remediation level: X
  • Report confidence: X

Result​

  • Vector string: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:X/RL:X/RC:X
  • Score:
    • Base: 6.8
    • Temporal: 6.8
  • Severity:
    • Base: Medium
    • Temporal: Medium

Code Examples​

Compliant code​

Configure the server to avoid LM Hashing

Security Policy:
  Control Set:
    LSA:
      NoLMHash

Non compliant code​

The server configuration has LM hash storing allowed, which makes it vulnerable to brut force attacks

Security Policy:
  Control Set:
    LSA:
      LMHash

Requirements​