CVE-2020-8619: Canonical Ubuntu Linux

Medium severity, CVSS 4.9. EPSS: 2.1% chance of exploitation in the next 30 days.

In ISC BIND9 versions BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -> 9.11.19-S1: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk ("*") character, this defect cannot be encountered. A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable.

Affected products

• Canonical Ubuntu Linux: version 20.04 only
• Debian Debian Linux: version 10.0 only
• Fedoraproject Fedora: version 31 only; version 32 only
• ISC BIND: from 9.11.14, up to and including 9.11.19; from 9.11.14-s1, up to and including 9.11.19-s1; from 9.14.9, up to and including 9.14.12; from 9.16.0, up to and including 9.16.3
• Netapp Steelstore Cloud Integrated Storage: affected versions not specified
• Opensuse Leap: version 15.1 only; version 15.2 only

Published 2020-06-17. Last modified 2026-09-01.