CVE-2020-8619 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html https://kb.isc.org/docs/cve-2020-8619 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CNFTTYJ5JJJJ6QG3AHXJGDIIEYMDFWFW/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EIOXMJX4N3LBKC65OXNBE52W4GAS7QEX/ https://security.netapp.com/advisory/ntap-20200625-0003/ https://usn.ubuntu.com/4399-1/ https://www.debian.org/security/2020/dsa-4752

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

4.9