VULNERABILITY INTELLIGENCE
CVE-2020-8622
CVSS score6.5 MEDIUM
EPSS probability5.90%
CISA KEVNot currently listed
Published2020-08-21
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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.
Weakness classification
- CWE-617: Reachable Assertion
Primary references
- security-officer@isc.org — Mailing List, Third Party Advisory
- security-officer@isc.org — Mailing List, Third Party Advisory
- security-officer@isc.org — Vendor Advisory
- security-officer@isc.org — Mailing List, Third Party Advisory
- security-officer@isc.org
- security-officer@isc.org
- security-officer@isc.org — Third Party Advisory
- security-officer@isc.org — Third Party Advisory
- security-officer@isc.org — Third Party Advisory
- security-officer@isc.org — Third Party Advisory
- security-officer@isc.org — Third Party Advisory
- security-officer@isc.org — Patch, Third Party Advisory