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Rewterz Threat Advisory – CVE 2019-1895 – Cisco Enterprise NFV Infrastructure Software VNC Authentication Bypass Vulnerability
August 8, 2019
Rewterz Threat Alert – Double Dragon APT41, a Dual Espionage and Cyber Crime Operation
August 8, 2019

Rewterz Threat Advisory – CVE 2019-1918 – Cisco IOS XR Software Intermediate System–to–Intermediate System Denial of Service Vulnerability

August 8, 2019

Severity

High

Analysis Summary

The vulnerability is due to incorrect processing of IS–IS link-state protocol data units (PDUs). An attacker could exploit this vulnerability by sending specific link-state PDUs to an affected system to be processed. A successful exploit could allow the attacker to cause incorrect calculations used in the weighted remote shared risk link groups (SRLG) or in the IGP Flexible Algorithm. It could also cause tracebacks to the logs or potentially cause the receiving device to crash the IS–IS process, resulting in a DoS condition.

Impact

Denial of service

Affected Vendors

Cisco

Affected Products

Cisco IOS XR Software releases later than 6.5.1 and earlier than 6.6.3.

Remediation

Cisco fixed this vulnerability in Cisco IOS XR Software Release 6.6.3.

  • 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
  • Company
    • About Us
    • Careers
    • Contact
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