Is CVE-2020-8621 actively exploited?

CVE-2020-8621 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2020-8621?

CVE-2020-8621 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2020-8621?

Patch guidance is available from isc security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2020-8621.

Fix CVE-2020-8621 - HIGH isc bind

Q: Which products are affected by CVE-2020-8621?

9 products: isc bind, isc bind, opensuse leap, opensuse leap, canonical ubuntu linux, and 4 more.

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-617

Metadata

Primary Vendor: ISC
Published: 8/21/2020
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

isc : bindisc : bindopensuse : leapopensuse : leapcanonical : ubuntu_linuxcanonical : ubuntu_linuxcanonical : ubuntu_linuxsynology : dns_servernetapp : steelstore_cloud_integrated_storage

Remediation Guidance

Executive Summary

View on NIST NVD