CVE-2020-8621

high

Description

In BIND 9.14.0 -> 9.16.5, 9.17.0 -> 9.17.3, If a server is configured with both QNAME minimization and 'forward first' then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that 'forward only' are not affected.

References

https://kb.isc.org/docs/cve-2020-8621

https://security.netapp.com/advisory/ntap-20200827-0003/

https://usn.ubuntu.com/4468-1/

https://security.gentoo.org/glsa/202008-19

https://www.synology.com/security/advisory/Synology_SA_20_19

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html

Details

Source: MITRE

Published: 2020-08-21

Updated: 2022-04-28

Type: CWE-617

Risk Information

CVSS v2

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 7.5

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

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH