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PatchSiren cyber security CVE debrief

CVE-2024-27982 NodeJS CVE debrief

A vulnerability in the HTTP server of Siemens SINEC INS allows malformed headers to cause HTTP request smuggling. Specifically, when a space is placed before a Content-Length header, the header is not interpreted correctly, enabling attackers to smuggle a second request within the body of the first. This flaw was published on November 12, 2024, and carries a CVSS 3.1 score of 6.1 (Medium severity). The attack vector is network-based, requires low attack complexity, no privileges, and user interaction, with scope changed and low impacts to confidentiality and integrity. Siemens has released a vendor fix in V1.0 SP2 Update 3 or later. No known exploitation in ransomware campaigns has been reported, and this CVE is not listed in CISA's Known Exploited Vulnerabilities catalog.

Vendor
NodeJS
Product
SINEC INS
CVSS
MEDIUM 6.1
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

Organizations operating Siemens SINEC INS in industrial network environments, particularly those with HTTP-based management interfaces exposed to untrusted networks or complex proxy/load balancer architectures. Security teams responsible for ICS/OT infrastructure and compliance with CISA ICS security guidance should prioritize this patch. Network defenders monitoring for HTTP anomalies and request smuggling techniques should include this vulnerability in their detection coverage.

Technical summary

CVE-2024-27982 is an HTTP request smuggling vulnerability in Siemens SINEC INS. The flaw occurs when a space character precedes the Content-Length header, causing incorrect header interpretation that allows attackers to embed a second HTTP request within the body of a first request. This can lead to request routing errors, cache poisoning, or unauthorized access to backend resources depending on the architecture of the affected deployment. The vulnerability is rated CVSS 3.1 6.1 (Medium) with network attack vector, low complexity, no required privileges, user interaction required, changed scope, and low confidentiality and integrity impacts.

Defensive priority

medium

Recommended defensive actions

  • Apply the vendor-provided update to SINEC INS V1.0 SP2 Update 3 or later as specified in the Siemens security advisory.
  • Review and implement CISA ICS recommended practices for industrial control systems defense in depth.
  • Monitor HTTP traffic for anomalous request patterns that may indicate attempted request smuggling.
  • Validate that upstream and downstream HTTP parsers in your architecture handle header parsing consistently to reduce smuggling risk.

Evidence notes

The vulnerability description and affected product information are derived from CISA CSAF source ICSA-24-319-08, which references Siemens security advisory SSA-915275. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N is provided in the source advisory.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-27982 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-27982

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2024-27982 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-27982

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • CVE-2024-27982

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2024/icsa-24-319-08.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-915275.json

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-915275.html

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-24-319-08

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/resources-tools/resources/ics-recommended-practices

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/topics/industrial-control-systems

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf

    Supplemental source

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.