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CVE-2020-8621

HIGH
Published 2020-08-21T20:50:18.959156Z
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CVSS Score

V3.1
7.5
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.020
probability
of exploitation in the wild

There is a 2.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.827
Higher than 82.7% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

ISC

BIND9

Affected Versions:

9.14.0

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-7vc6-qmjj-2j83

Advisory Details

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.

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2020-8621
WEB https://kb.isc.org/docs/cve-2020-8621
WEB https://security.gentoo.org/glsa/202008-19
WEB https://security.netapp.com/advisory/ntap-20200827-0003
WEB https://usn.ubuntu.com/4468-1
WEB https://www.synology.com/security/advisory/Synology_SA_20_19
WEB http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html
WEB http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html

Advisory provided by GitHub Security Advisory Database. Published: May 24, 2022, Modified: May 24, 2022

References

https://kb.isc.org/docs/cve-2020-8621
https://security.netapp.com/advisory/ntap-20200827-0003/
https://usn.ubuntu.com/4468-1/
https://security.gentoo.org/glsa/202008-19
https://www.synology.com/security/advisory/Synology_SA_20_19
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html
Published: 2020-08-21T20:50:18.959156Z
Last Modified: 2024-09-16T16:18:00.777Z
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