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Rewterz Threat Update – Computer hardware giant GIGABYTE hit by RansomEXX Ransomware
August 7, 2021
Rewterz Threat Alert – DanaBot Trojan – Active IOCs
August 9, 2021

Rewterz Threat Advisory –CVE-2021-33037 – Apache Tomcat Security Vulnerability

August 9, 2021

Severity

Medium

Analysis Summary

CVE-2021-33037

Apache Tomcat did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: – Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; – Tomcat honored the identify encoding; and – Tomcat did not ensure that, if present, the chunked encoding was the final encoding.

Impact

  • Bypass Security
  • Unauthorized Access

Affected Vendors

Apache Tomcat

Affected Products

  • BIG-IP (all modules)
  • BIG-IQ Centralized Management
  • Traffix SDC

Remediation

Upgrade to the latest version of Apache Tomcat available from the Apache Web site.

https://support.f5.com/csp/article/K32469285
  • Services
    • Assess
      • 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
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