CVE-2020-8622

CVE Details

Release Date:	2020-08-21
Impact:	None	What is this?

Description

In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit.

See more information about CVE-2020-8622 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	6.5
Vector String:	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Version:	3.0
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 6 (bind)	ELSA-2020-4183	2020-10-08
Oracle Linux version 7 (bind)	ELSA-2020-5011	2020-11-17
Oracle Linux version 8 (bind)	ELSA-2020-4500	2020-11-10
Oracle VM version 3.3 (bind)	OVMSA-2020-0045	2020-10-08
Oracle VM version 3.4 (bind)	OVMSA-2020-0045	2020-10-08