An Improper Certificate Validation issue was discovered in Smiths Medical Medfusion 4000 Wireless Syringe Infusion Pump, Version 1.1, 1.5, a

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• smiths-medical medfusion 4000 wireless syringe infusion pump1.1
• smiths-medical medfusion 4000 wireless syringe infusion pump1.5
• smiths-medical medfusion 4000 wireless syringe infusion pump1.6

Versions reported by the vendor

Affected version ranges reported by the assigning authority (icscert). Independent of NVD's CPE analysis and usually ahead of it.

• n/a Smiths Medical Medfusion 4000 Wireless Syringe Infusion Pump

  • Smiths Medical Medfusion 4000 Wireless Syringe Infusion Pumpaffected

Other highest-scoring records for the same primary product.

• CVE-2017-12718A Classic Buffer Overflow issue was discovered in Smiths Medical Medfusion 4000 Wireless Syringe Infusion Pump, Version 1.1, 1.5, and 1.6.
  36Monitor
• CVE-2017-12720An Improper Access Control issue was discovered in Smiths Medical Medfusion 4000 Wireless Syringe Infusion Pump, Version 1.1, 1.5, and 1.6.
  33Monitor
• CVE-2017-12724A Use of Hard-coded Credentials issue was discovered in Smiths Medical Medfusion 4000 Wireless Syringe Infusion Pump, Version 1.1, 1.5, and
  32Monitor
• CVE-2017-12726A Use of Hard-coded Password issue was discovered in Smiths Medical Medfusion 4000 Wireless Syringe Infusion Pump, Version 1.1, 1.5, and 1.6
  29Monitor
• CVE-2017-12725A Use of Hard-coded Credentials issue was discovered in Smiths Medical Medfusion 4000 Wireless Syringe Infusion Pump, Version 1.1, 1.5, and
  22Monitor
• CVE-2017-12722An Out-of-bounds Read issue was discovered in Smiths Medical Medfusion 4000 Wireless Syringe Infusion Pump, Version 1.1, 1.5, and 1.6.
  22Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

A certificate validation error is silently swallowed instead of terminating the connection. Often, code added for a test environment makes its way into production.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1override fun checkServerTrusted(chain: Array<X509Certificate>, type: String) {2  // Left empty for the test environment3}

1val client = OkHttpClient.Builder()2  .certificatePinner(3    CertificatePinner.Builder()4      .add("api.sirius.example", "sha256/…")5      .build()6  ).build()

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.