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PatchSiren cyber security CVE debrief

CVE-2023-32559 NodeJS CVE debrief

A privilege escalation vulnerability exists in the experimental policy mechanism in Node.js versions 16.x, 18.x, and 20.x. The deprecated `process.binding()` API can be exploited to bypass policy restrictions by requiring internal modules and leveraging `process.binding('spawn_sync')` to execute arbitrary code outside the boundaries defined in a `policy.json` file. Siemens SINEC INS is affected by this vulnerability. The vendor has released a fix in V1.0 SP2 Update 3 or later.

Vendor
NodeJS
Product
SINEC INS
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2024-02-13
Original CVE updated
2024-03-12
Advisory published
2024-02-13
Advisory updated
2024-03-12

Who should care

Organizations running Siemens SINEC INS with affected Node.js versions, industrial control system operators, and security teams responsible for Node.js application security should prioritize this update.

Technical summary

CVE-2023-32559 is a privilege escalation vulnerability in Node.js's experimental policy mechanism. The deprecated `process.binding()` API allows attackers to bypass policy restrictions by requiring internal modules and using `process.binding('spawn_sync')` to execute arbitrary code outside `policy.json` limits. Affected versions include Node.js 16.x, 18.x, and 20.x. Siemens SINEC INS incorporates affected Node.js components. The vulnerability has a CVSS 3.1 score of 7.5 (HIGH). Siemens has released V1.0 SP2 Update 3 or later to address this issue.

Defensive priority

HIGH

Recommended defensive actions

  • Apply the vendor-provided update to V1.0 SP2 Update 3 or later version for Siemens SINEC INS
  • Review and restrict access to systems running affected Node.js versions
  • Monitor for anomalous process spawning activity that may indicate exploitation attempts
  • Implement defense-in-depth strategies for industrial control systems per CISA guidance

Evidence notes

The vulnerability stems from the experimental Node.js policy mechanism, which can be circumvented using deprecated APIs. The affected product is Siemens SINEC INS. The vendor fix is available as V1.0 SP2 Update 3 or later.

Official resources

2024-11-12