Description:

A vulnerability was found in the ISC BIND software. A remote attacker could send specially crafted queries to trigger an assertion failure which could cause the BIND to exit.

Affected Systems:

• BIND 9.11.0 to 9.11.7
• BIND 9.11.3-S1 to 9.11.7-S1
• BIND 9.12.0 to 9.12.4-P1
• BIND 9.13.x
• BIND 9.14.0 to 9.14.2
• BIND 9.15.0

Impact:

Successful exploitation could lead to a denial of service condition on an affected system.

Recommendation:

Internet Systems Consortium (ISC) has released the following patches to solve the problem:

• BIND 9.11.8
• BIND 9.11.8-S1
• BIND 9.12.4-P2
• BIND 9.14.3
• BIND 9.15.1

http://www.isc.org/downloads/

More Information:

https://kb.isc.org/docs/cve-2019-6471
https://www.hkcert.org/my_url/en/alert/19062101
https://www.us-cert.gov/ncas/current-activity/2019/06/19/ISC-Releases-BIND-Security-Updates
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6471