Attacker Value
Unknown
CVE-2020-8617
CVE-2020-8617
(Last updated November 08, 2023) ▾
MITRE ATT&CK
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Metasploit Module
Description
Using a specially-crafted message, an attacker may potentially cause a BIND server to reach an inconsistent state if the attacker knows (or successfully guesses) the name of a TSIG key used by the server. Since BIND, by default, configures a local session key even on servers whose configuration does not otherwise make use of it, almost all current BIND servers are vulnerable. In releases of BIND dating from March 2018 and after, an assertion check in tsig.c detects this inconsistent state and deliberately exits. Prior to the introduction of the check the server would continue operating in an inconsistent state, with potentially harmful results.
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CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
5.9 Medium
Impact Score:
3.6
Exploitability Score:
2.2
Attack Vector (AV):
Network
Attack Complexity (AC):
High
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High
General Information
Vendors
- canonical,
- debian,
- fedoraproject,
- isc,
- opensuse
Products
- bind,
- bind 9.10.5,
- bind 9.10.7,
- bind 9.11.3,
- bind 9.11.5,
- bind 9.11.6,
- bind 9.11.7,
- bind 9.11.8,
- bind 9.12.4,
- bind 9.9.3,
- debian linux 10.0,
- debian linux 8.0,
- debian linux 9.0,
- fedora 31,
- fedora 32,
- leap 15.1,
- leap 15.2,
- ubuntu linux 12.04,
- ubuntu linux 14.04,
- ubuntu linux 16.04,
- ubuntu linux 18.04,
- ubuntu linux 19.10,
- ubuntu linux 20.04
Metasploit Modules
References
Advisory
