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 src.

Base

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

Temporal

• Exploit code maturity: 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

Score 4.0

Default score using CVSS 4.0. It may change depending on the context of the src.

Base 4.0

• Attack vector: N
• Attack complexity: L
• Attack Requirements: N
• Privileges required: L
• User interaction: N
• Confidentiality (VC): L
• Integrity (VI): L
• Availability (VA): N
• Confidentiality (SC): N
• Integrity (SI): N
• Availability (SA): N

Threat 4.0

• Exploit maturity: X

Result 4.0

• Vector string: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X
• Score:
• CVSS-BT: 5.3
• Severity:
• CVSS-BT: Medium

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

• 089.Limit validity of certificates
• 090.Use valid certificates
• 093.Use consistent certificates
• 266.Disable insecure functionalities

Fixes

Free trial

Search for vulnerabilities in your apps for free with Fluid Attacks' automated security testing! Start your 21-day free trial and discover the benefits of the Continuous Hacking Essential plan. If you prefer the Advanced plan, which includes the expertise of Fluid Attacks' hacking team, fill out this contact form.