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CVE-2020-8621

nvd nist
Published: Aug 21, 2020Modified: Jun 17, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: NVD

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.

Affected (9)

Products: Isc: Bind · Opensuse: Leap · Canonical: Ubuntu Linux · +2 more
Show all products
Isc: Bind · Opensuse: Leap · Canonical: Ubuntu Linux · Synology: Dns Server · Netapp: Steelstore Cloud Integrated Storage
Isc
1 product
Bind
Opensuse
1 product
Leap
Canonical
1 product
Ubuntu Linux
Synology
1 product
Dns Server
Netapp
1 product
Steelstore Cloud Integrated Storage
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Isc
Bind
From 9.14.0 to 9.16.5
Bind
From 9.17.0 to 9.17.3
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
Opensuse
Leap
Version 15.1
Leap
Version 15.2
Configuration C
3 vulnerable
Vulnerable SoftwareAffected Versions
Canonical
Ubuntu Linux
Version 16.04
Ubuntu Linux
Version 18.04
Ubuntu Linux
Version 20.04
Configuration D
1 vulnerable
Vulnerable SoftwareAffected Versions
Dns Server
Before 2.2.2-5027
Configuration E
1 vulnerable
Vulnerable SoftwareAffected Versions
Steelstore Cloud Integrated Storage
All versions

Related CWEs

CWE-617
Reachable Assertion
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.

References (14)

Source: security-officer@isc.org
Mailing ListThird Party Advisory
Source: security-officer@isc.org
Mailing ListThird Party Advisory
Source: security-officer@isc.org
Vendor Advisory
Source: security-officer@isc.org
Third Party Advisory
Source: security-officer@isc.org
Third Party Advisory
Source: security-officer@isc.org
Third Party Advisory
Source: security-officer@isc.org
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.