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CVE-2024-35211 Siemens CVE debrief

CVE-2024-35211 is a MEDIUM severity vulnerability (CVSS 5.5) affecting Siemens SINEC Traffic Analyzer (6GK8822-1BG01-0BA0). The affected web server sets session cookies without security attributes (Secure, HttpOnly, or SameSite) after successful authentication. This weakness exposes session tokens to potential interception or manipulation, particularly in network-sniffing scenarios or cross-site request forgery attacks. The vulnerability was published on June 11, 2024, with the advisory last modified on May 6, 2025. Siemens has released a vendor fix in version 1.2 or later.

Vendor
Siemens
Product
SINEC Traffic Analyzer (6GK8822-1BG01-0BA0)
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2024-06-11
Original CVE updated
2025-05-06
Advisory published
2024-06-11
Advisory updated
2025-05-06

Who should care

Organizations operating Siemens SINEC Traffic Analyzer in industrial network environments, OT security teams managing network monitoring infrastructure, and compliance officers responsible for secure session management controls in critical infrastructure sectors.

Technical summary

The SINEC Traffic Analyzer web server fails to set essential cookie security attributes on session tokens post-authentication. Missing Secure, HttpOnly, and SameSite flags expose sessions to: (1) man-in-the-middle interception when transmitted over unencrypted channels, (2) client-side script access enabling XSS-based token theft, and (3) cross-site request forgery via unintended cross-origin cookie transmission. The CVSS 3.1 score of 5.5 reflects local attack requirements with high confidentiality impact potential.

Defensive priority

medium

Recommended defensive actions

  • Apply vendor fix: Update SINEC Traffic Analyzer to version 1.2 or later
  • Implement network segmentation to limit exposure of the web management interface
  • Enforce HTTPS-only access to the web server to mitigate cookie transmission risks
  • Monitor for anomalous session activity and unauthorized access attempts
  • Review and apply CISA ICS recommended practices for defense-in-depth strategies

Evidence notes

The vulnerability description is sourced from CISA CSAF advisory ICSA-24-165-13, which references Siemens Security Advisory SSA-196737. The CVSS 3.1 vector (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) indicates local attack vector with low attack complexity, requiring low privileges but no user interaction, resulting in high confidentiality impact.

Sources and references

Verified primary and authoritative sources

  • CVE-2024-35211 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2024-35211

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

  • CVE-2024-35211 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2024-35211

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

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2024/icsa-24-165-13.json

    cisa_csaf

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/csaf/ssa-196737.json

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://cert-portal.siemens.com/productcert/html/ssa-196737.html

    Reference

  • Source reference

    Unverified legacy reference

    URL: https://www.cisa.gov/news-events/ics-advisories/icsa-24-165-13

    Reference

  • Source reference

    Unverified legacy reference

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

    Reference

  • Source reference

    Unverified legacy reference

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

    Reference

  • Source reference

    Unverified legacy reference

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

    Reference

  • 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

    Reference

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.