Vulnerability Details : CVE-2020-8621

In BIND 9.14.0 -> 9.16.5, 9.17.0 -> 9.17.3, If a server is configured with both QNAME minimization and 'forward first' then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that 'forward only' are not affected.
Published 2020-08-21 21:15:12
Updated 2022-04-28 18:27:41
Source Internet Systems Consortium (ISC)
View at NVD,   CVE.org

Products affected by CVE-2020-8621

Threat overview for CVE-2020-8621

Top countries where our scanners detected CVE-2020-8621
Top open port discovered on systems with this issue 53
IPs affected by CVE-2020-8621 179,130
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2020-8621!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2020-8621

EPSS FAQ
1.11%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 85 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-8621

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
 MEDIUM AV:N/AC:M/Au:N/C:N/I:N/A:P
8.6
2.9
 NIST
7.5
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
 NIST
7.5
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
 Internet Systems Consortium (ISC)

CWE ids for CVE-2020-8621

  • The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-8621

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