CVEvulnerability

CVE-2020-8622

6.5 MEDIUM Published 2020-08-21 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-08-21
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
4.0 MEDIUM — AV:N/AC:L/Au:S/C:N/I:N/A:P
Weaknesses
CWE-617

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.

Affected configurations

• isc bind (>= 9.0.0 <= 9.11.21) • isc bind (>= 9.12.0 <= 9.16.5) • isc bind (>= 9.17.0 <= 9.17.3) • isc bind 9.9.3 • isc bind 9.11.21 • fedoraproject fedora 31 • fedoraproject fedora 32 • debian debian linux 9.0 • debian debian linux 10.0 • canonical ubuntu linux 12.04 • canonical ubuntu linux 14.04 • canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04 • canonical ubuntu linux 20.04 • netapp steelstore cloud integrated storage • opensuse leap 15.1 • opensuse leap 15.2 • synology dns server (< 2.2.2-5028) • oracle communications diameter signaling router (>= 8.0.0 <= 8.5.0)

Related

Weakness · CWE (1)

  • CWE-617 Reachable Assertion weakness

References