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Rewterz Threat Alert – Defense Contractor Themed Spearphishing
October 1, 2019
Rewterz Threat Advisory – CVE-2019-6008 – ICS: Yokogawa Products Vulnerability
October 2, 2019

Rewterz Threat Advisory – CVE-2019-16928 – Exim string_vformat function buffer overflow Vulnerability

October 1, 2019

Severity

Medium

Analysis Summary

Exim is vulnerable to a heap-based buffer overflow, caused by improper bounds checking by the string_vformat function in string.c. By sending an overly-long EHLO string, a remote attacker could overflow a buffer and execute arbitrary code on the system.

Impact

Unauthorized Access

Affected Vendors

Exim

Affected Products

  • Exim Exim 4.92
  • Exim Exim 4.92.1
  • Exim Exim 4.92.2

Remediation

Upgrade to the latest version of Exim (4.92.3 or later)

  • 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
    • Blog
    • Threat Advisory
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