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Rewterz Threat Alert – Account Themed Malspam – Threat Indicators
March 26, 2019
Rewterz Threat Alert – FASTCash ISO 8583-Specific Windows Malware Identified
March 26, 2019

Rewterz Threat Advisory – Apache Tomcat SETTINGS Denial of Service Vulnerability

March 26, 2019

Severity

Low

Analysis Summary

CVE-2019-0199
The HTTP/2 implementation accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API’s blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.

Impact

Denial of Service

Affected Vendors

Apache Foundation

Affected Products

Apache Tomcat 8.x
Apache Tomcat 9.x

Remediation

Update to version 9.0.16 or 8.5.38.

  • Services
    • Asses
      • Compromise Assessment
      • APT Assessment
      • Penetration Testing
      • Secure Architecture Design & Review
      • Red Team Assessment
      • Purple Team Assessment
      • Social Engineering
      • Source Code Review
    • Respond
      • Incident Response
      • Incident Analysis
  • Transform
    • SOC Consultancy
    •     SOC Maturity Assessment
    •     SOC Model Evaluation
    •     SOC Gap Analysis
    •     SIEM Gap Analysis
    •     SIEM Optimization
    •     SOC Content Pack
  • Train
    • Security Awareness and Training
    • Tabletop Exercise
    • Simulated Cyber Attack Exercises
  • Managed Security
    • Managed Security Monitoring
      • Remote SOC
      • Onsite SOC
      • Hybrid SOC
    • Managed Security Services
      • Managed Detection and Response
      • Managed Endpoint Detection and Response
      • Managed Threat Intelligence
      • Managed Threat Hunting
      • Managed Risk-Based SOAR
      • Managed Penetration Testing
  • Solutions
  • Resources
    • Blog
    • Threat Advisory
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    • About Us
    • Careers
    • Contact
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