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CVE-2024-22017 NodeJS CVE debrief

CVE-2024-22017 is a privilege escalation vulnerability in Node.js affecting libuv's io_uring implementation. The root cause is that libuv's internal io_uring operations, when initialized before a setuid() call, retain their original privilege level and are not affected by subsequent privilege drops. This allows a process to continue performing privileged operations even after setuid() has been called to drop privileges. The vulnerability affects Node.js versions 18.18.0 and later, 20.4.0 and later, and version 21. Siemens SINEC INS is affected as it incorporates vulnerable Node.js components. The CVSS 3.0 score of 7.3 (HIGH) reflects local attack vector, low attack complexity, high privileges required, no user interaction, changed scope, low confidentiality impact, high integrity impact, and low availability impact. CISA published advisory ICSA-24-319-08 on November 12, 2024, identifying this vulnerability in industrial control system contexts. Siemens has released a vendor fix in SINEC INS V1.0 SP2 Update 3 or later.

Vendor
NodeJS
Product
SINEC INS
CVSS
HIGH 7.3
CISA KEV
Not listed in stored evidence
Original CVE published
2024-11-12
Original CVE updated
2024-11-12
Advisory published
2024-11-12
Advisory updated
2024-11-12

Who should care

System administrators managing Siemens SINEC INS deployments in industrial environments; DevOps teams running Node.js applications with privilege separation requirements; security architects designing sandboxed or containerized Node.js workloads; ICS/OT security practitioners monitoring CISA advisories for critical infrastructure assets; developers implementing setuid()-based privilege drops in Node.js applications

Technical summary

The vulnerability exists in libuv's io_uring implementation used by Node.js. When io_uring is initialized prior to a setuid() call that attempts to drop privileges, the io_uring ring and associated kernel resources retain the original effective user ID. Subsequent io_uring operations submitted through this ring continue to execute with elevated privileges, bypassing the intended security boundary established by setuid(). This is a fundamental mismatch between the POSIX setuid() semantics and Linux io_uring's credential handling. The affected Node.js versions (18.18.0+, 20.4.0+, 21.x) enabled or defaulted to io_uring for certain asynchronous I/O operations. In Siemens SINEC INS, this vulnerability could allow processes that have attempted privilege reduction to maintain unintended elevated access to system resources.

Defensive priority

HIGH

Recommended defensive actions

  • Apply Siemens vendor fix: Update SINEC INS to V1.0 SP2 Update 3 or later version
  • Review Node.js runtime versions in all deployed applications against affected ranges (18.18.0+, 20.4.0+, 21.x)
  • Audit applications using setuid() privilege drops to ensure io_uring initialization occurs after privilege reduction
  • Implement defense-in-depth controls per CISA ICS recommended practices for industrial control systems
  • Monitor for anomalous privilege escalation attempts in Node.js-based applications
  • Validate that libuv io_uring operations respect intended privilege boundaries in custom Node.js builds

Evidence notes

Vulnerability description derived from CISA CSAF advisory ICSA-24-319-08 and Siemens security advisory SSA-915275. Affected product information confirmed through CSAF product tree with high confidence. CVSS vector AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:L indicates local exploitation with high integrity impact. Remediation guidance specifies vendor fix available in V1.0 SP2 Update 3 or later.

Official resources

2024-11-12