CVE-2020-8621

MEDIUM

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

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-2020-8621

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

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

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

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

Details

Source: MITRE

Published: 2020-08-21

Updated: 2020-10-20

Type: CWE-20

Risk Information

CVSS v2.0

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 v3.0

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