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symantecSymantec Security ResponseSMNTC-110575
HistoryOct 16, 2019 - 12:00 a.m.

ISC BIND CVE-2019-6475 Authentication Bypass Vulnerability

Symantec Security Response






ISC BIND is prone to an authentication-bypass vulnerability. An attacker can exploit this issue to perform unauthorized actions. This may aid in further attacks. ISC BIND versions 9.14.0 through 9.14.6, and 9.15.0 through 9.15.4 are vulnerable.

Technologies Affected

  • ISC Bind 9.14.0
  • ISC Bind 9.14.1
  • ISC Bind 9.14.2
  • ISC Bind 9.14.3
  • ISC Bind 9.14.6
  • ISC Bind 9.15.0
  • ISC Bind 9.15.1
  • ISC Bind 9.15.4


Run all software as a nonprivileged user with minimal access rights.
When possible, run all software as a user with minimal privileges and limited access to system resources. Use additional precautions such as restrictive environments to insulate software that may potentially handle malicious content.

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.