CVE-2023-31222
Published: 29 June 2023
Summary
CVE-2023-31222 is a critical-severity Deserialization of Untrusted Data (CWE-502) vulnerability in Medtronic Paceart Optima. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 3.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2023-31222 is a deserialization of untrusted data vulnerability (CWE-502) in the Microsoft Messaging Queuing Service component of Medtronic Paceart Optima versions 1.11 and earlier running on Windows. The flaw carries a CVSS 3.1 base score of 9.8 and permits an unauthenticated network attacker to affect cardiac device data managed by the Paceart Optima system.
An attacker with network access can supply malicious serialized objects to the queuing service, resulting in deletion, theft, or modification of patient cardiac data or use of the compromised system for further network penetration within a healthcare delivery organization.
Medtronic’s security bulletin for the Paceart Optima system addresses the issue and directs customers to the vendor for mitigation guidance and available updates.
The EPSS score for this CVE rose from a low baseline to a peak of 0.2853, indicating that exploitation interest emerged after public disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-35537
Vulnerability details
Deserialization of untrusted data in Microsoft Messaging Queuing Service in Medtronic's Paceart Optima versions 1.11 and earlier on Windows allows an unauthorized user to impact a healthcare delivery organization’s Paceart Optima system cardiac device causing data to be deleted, stolen,…
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or modified, or the Paceart Optima system being used for further network penetration via network connectivity.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing supplies malicious serialized objects, detecting unsafe deserialization and supporting corrective actions.
Evaluation of untrusted data handling (deserialization testing) reveals unsafe processing, which the required remediation process addresses.
Untrusted serialized data can be deserialized and observed inside the chamber, blocking gadget-chain exploitation outside the sandbox.
Validates or rejects untrusted serialized data before deserialization occurs.
Identifies and blocks malicious code introduced through deserialization of untrusted data at system boundaries.
Integrity verification of serialized information can detect tampering before deserialization occurs.
Provenance of associated data allows detection of untrusted sources before deserialization or processing occurs.