DEBIAN-CVE-2023-26249

Source
https://security-tracker.debian.org/tracker/CVE-2023-26249
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-26249.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2023-26249
Upstream
Published
2023-02-21T02:15:10Z
Modified
2026-09-15T09:01:02Z
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 5.6.0 enables attackers to consume its resources, launching amplification attacks and potentially causing a denial of service. Specifically, a single client query may lead to a hundred TCP connection attempts if a DNS server closes connections without providing a response.

References

Affected packages

Debian:12 / knot-resolver

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.6.0-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-26249.json"

Debian:13 / knot-resolver

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.6.0-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-26249.json"

Debian:14 / knot-resolver

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.6.0-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-26249.json"