CVE-2020-8617
Scores
EPSS
Percentile: 92.6%
CVSS
CVSS Score: 7.5/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Privileges Required
None (N)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Unchanged (U)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
None (N)
Measures the impact to the confidentiality of information
Integrity Impact
None (N)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
High (H)
Measures the impact to the availability of the impacted component
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Medium
Describes the conditions beyond the attacker's control
Authentication
None (N)
Describes the level of privileges an attacker must possess
Confidentiality Impact
None (N)
Measures the impact to the confidentiality of information
Integrity Impact
None (N)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
Partial
Measures the impact to the availability of the impacted component
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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Sources
CWEs
Related Vulnerabilities
Exploits
Vulnerable Software (30)
Type: Configuration
Product: bind
Operating System: rhel 6
{ "fixed": "9.8.2-0.68.rc1.el6_10.7"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel 6.5
{ "fixed": "9.8.2-0.23.rc1.el6_5.9"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel 6.6
{ "fixed": "9.8.2-0.30.rc1.el6_6.11"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel 7
{ "fixed": "9.11.4-16.P2.el7_8.6"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel 7.2
{ "fixed": "9.9.4-29.el7_2.9"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel 7.3
{ "fixed": "9.9.4-50.el7_3.4"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel 7.3
{ "fixed": "9.9.4-50.el7_3.4"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel 7.3
{ "fixed": "9.9.4-50.el7_3.4"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel 7.4
{ "fixed": "9.9.4-51.el7_4.4"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel 7.4
{ "fixed": "9.9.4-51.el7_4.4"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel 7.4
{ "fixed": "9.9.4-51.el7_4.4"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel 7.6
{ "fixed": "9.9.4-74.el7_6.4"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel 7.7
{ "fixed": "9.11.4-9.P2.el7_7.1"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel
{ "fixed": "9.11.13-5.el8_2"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel 8
{ "fixed": "9.11.13-5.el8_2"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel
{ "fixed": "9.11.4-19.P2.el8_0"}
Source: redhat
Type: Configuration
Product: bind
Operating System: rhel
{ "fixed": "9.11.4-26.P2.el8_1.3"}
Source: redhat
Type: Configuration
Product: bind9
Operating System: ubuntu bionic 18.04
{ "fixed": "1:9.11.3+dfsg-1ubuntu1.12"}
Source: ubuntu
Type: Configuration
Product: bind9
Operating System: ubuntu eoan 19.10
{ "fixed": "1:9.11.5.P4+dfsg-5.1ubuntu2.2"}
Source: ubuntu
Type: Configuration
Product: bind9
Operating System: debian
{ "fixed": "1:9.16.3-1"}
Source: debian