Facebook Mcrouter Multiple Denial of Service Vulnerabilities



Date Discovered

December 4, 2019


Facebook Mcrouter is prone to multiple denial of service vulnerabilities. An attacker can exploit these issues to cause a denial of service condition.

Technologies Affected

  • Facebook Mcrouter 0.1.0
  • Facebook Mcrouter 0.10.0
  • Facebook Mcrouter 0.20.0
  • Facebook Mcrouter 0.30.0
  • Facebook Mcrouter 0.31.0
  • Facebook Mcrouter 0.32.0
  • Facebook Mcrouter 0.33.0
  • Facebook Mcrouter 0.34.0
  • Facebook Mcrouter 0.35.0
  • Facebook Mcrouter 0.36.0
  • Facebook Mcrouter 0.37.0
  • Facebook Mcrouter 0.38.0
  • Facebook Mcrouter 0.39.0
  • Facebook Mcrouter 0.40.0


Block external access at the network boundary, unless external parties require service.
Filter access to the affected computer at the network boundary if global access isn't needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Run all software as a nonprivileged user with minimal access rights.
To reduce the potential damage that successful exploits may achieve, run all nonadministrative software as a user with the least amount of privileges required to successfully operate.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This may indicate exploit attempts or activity that results from successful exploits.

Updates are available. Please see the references or vendor advisory for more information.



The vendor reported these issues.

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