Attacker Value
Unknown
CVE-2020-8622
CVE-2020-8622
(Last updated November 08, 2023) ▾
MITRE ATT&CK
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Credential Access
Techniques
Validation
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.
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CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
6.5 Medium
Impact Score:
3.6
Exploitability Score:
2.8
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High
General Information
Vendors
- canonical,
- debian,
- fedoraproject,
- isc,
- netapp,
- opensuse,
- oracle,
- synology
Products
- bind,
- bind 9.11.21,
- bind 9.9.3,
- communications diameter signaling router,
- debian linux 10.0,
- debian linux 9.0,
- dns server,
- fedora 31,
- fedora 32,
- leap 15.1,
- leap 15.2,
- steelstore cloud integrated storage -,
- ubuntu linux 12.04,
- ubuntu linux 14.04,
- ubuntu linux 16.04,
- ubuntu linux 18.04,
- ubuntu linux 20.04
References
Advisory
Miscellaneous
