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Insecure service configuration - Wireless Certificates

Description​

Certificates provide a more secure form of network authentication. These could be stealed for a malware for use communications fraud and data exfiltration, furthermore, non-existent or faulty validation of the access point certificate, allows attackers to obtain the challenge response values used in authentication. Attackers could use this data to bruteforce the password hash for the legitimate network.

Impact​

  • Falsify business services, corrupting the trust provided by a valid certificate, so that sensitive communications can be decrypted.
  • Exploit for entry due to unsecured or lightly protected wireless access.

Recommendation​

Install correct certificates on servers, revoke vulnerable ones and validate new keys and certificates are installed and working.

Threat​

Authenticated attacker from the Internet.

Expected Remediation Time​

⌚ 30 minutes.

Score​

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

Base​

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

Temporal​

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

Result​

  • Vector string: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:X/RL:X/RC:X
  • Score:
    • Base: 5.4
    • Temporal: 5.4
  • Severity:
    • Base: Medium
    • Temporal: Medium

Code Examples​

Compliant code​

All services use secure configurations and protocols

Defaults:
  policyProject: 'DefaultPolicies'
  Policies:
    MQEndpoint: 'MQEndpoint'
    remoteDefaultQueueManager: '{MQClientPolicy}:MQEndpoint'
  RestAdminListener:
    requireClientCert: true
  BrokerRegistry:
    mqKeyRepository: /startup/ssl/keystore
    ResourceManagers: JVM: jvmSystemProperty: '-Dcom.ibm.fxr.passfileenc=n'
  Log:
    consoleLog: true
    outputFormat: 'ibmjson'
  AdminLog:
    enabled: true
    consoleLog: true
  Protocol:
    tls: enabled
    version: 1.2

Non compliant code​

A service is configured with poor security protocols, such as ssl

Defaults:
  policyProject: 'DefaultPolicies'
  Policies:
    MQEndpoint: 'MQEndpoint'
    remoteDefaultQueueManager: '{MQClientPolicy}:MQEndpoint'
  RestAdminListener:
    requireClientCert: false
  BrokerRegistry:
    mqKeyRepository: /startup/ssl/keystore
    ResourceManagers: JVM: jvmSystemProperty: '-Dcom.ibm.fxr.passfileenc=n'
  Log:
    consoleLog: true
    outputFormat: 'ibmjson'
  AdminLog:
    enabled: true
    consoleLog: true
  Protocol:
    ssl: enabled

Requirements​

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