DEBIAN-CVE-2021-40083

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Source
https://security-tracker.debian.org/tracker/CVE-2021-40083
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-40083.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-40083
Upstream
Published
2021-08-25T01:15:11Z
Modified
2025-09-25T23:27:07.824752Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

Knot Resolver before 5.3.2 is prone to an assertion failure, triggerable by a remote attacker in an edge case (NSEC3 with too many iterations used for a positive wildcard proof).

References

Affected packages

Debian:11 / knot-resolver

Package

Name
knot-resolver
Purl
pkg:deb/debian/knot-resolver?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.3.1-1+deb11u1

Affected versions

5.*

5.3.1-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / knot-resolver

Package

Name
knot-resolver
Purl
pkg:deb/debian/knot-resolver?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.4.1-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / knot-resolver

Package

Name
knot-resolver
Purl
pkg:deb/debian/knot-resolver?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.4.1-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / knot-resolver

Package

Name
knot-resolver
Purl
pkg:deb/debian/knot-resolver?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.4.1-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}