Vulnerabilities

A Vulnerability is a state in a computing system (or set of systems) which either (a) allows an attacker to execute commands as another user, (b) allows an attacker to access data that is contrary to the specified access restrictions for that data, (c) allows an attacker to pose as another entity, or (d) allows an attacker to conduct a denial of service.Advisories relating to Symantec products may be viewed here.

ISC BIND CVE-2019-6477 Remote Denial of Service Vulnerability

Risk:
Medium
Date Discovered:
November 20, 2019
Description:
ISC BIND is prone to a remote denial-of-service vulnerability. An attacker can exploit this issue to cause a denial-of-service condition.
Technologies Affected
  • ISC Bind 9.11.0
  • ISC Bind 9.11.2
  • ISC Bind 9.11.3
  • ISC Bind 9.11.4
  • ISC Bind 9.11.5
  • ISC Bind 9.11.6
  • ISC Bind 9.11.7
  • ISC Bind 9.11.8
  • 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 9.14.7
  • ISC Bind 9.15.0
  • ISC Bind 9.15.1
  • ISC Bind 9.15.4
  • ISC Bind 9.15.5
  • Redhat Enterprise Linux 7
  • Redhat Enterprise Linux 8
  • Ubuntu Ubuntu Linux 18.04 LTS
  • Ubuntu Ubuntu Linux 19.04
  • Ubuntu Ubuntu Linux 19.10
Recommendations
  • Block external access at the network boundary, unless external parties require service.
    Allow only trusted hosts and networks to connect to computers running the affected software. This will limit the potential for remote attackers to exploit this issue.
  • 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 includes but is not limited to malformed requests and unexplained incoming and outgoing traffic. 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.
References
Credits
The vendor reported this issue.
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