USN-6225-1

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Source
https://ubuntu.com/security/notices/USN-6225-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6225-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-6225-1
Upstream
Related
Published
2023-07-13T02:20:36.356146Z
Modified
2025-09-08T16:37:49Z
Summary
knot-resolver vulnerability
Details

It was discovered that Knot Resolver did not correctly handle certain client options. A remote attacker could send requests to malicous domains and cause a denial of service.

References

Affected packages

Ubuntu:Pro:16.04:LTS / knot-resolver

Package

Name
knot-resolver
Purl
pkg:deb/ubuntu/knot-resolver@1.0.0~beta3-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.0~beta3-1ubuntu0.1~esm1

Affected versions

1.*

1.0.0~beta2-123-g6134920-1
1.0.0~beta3-1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "knot-resolver",
            "binary_version": "1.0.0~beta3-1ubuntu0.1~esm1"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / knot-resolver

Package

Name
knot-resolver
Purl
pkg:deb/ubuntu/knot-resolver@2.1.1-1ubuntu0.1~esm2?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.1.1-1ubuntu0.1~esm2

Affected versions

1.*

1.3.3-1
1.5.0-4
1.5.1-1
1.5.2-1

2.*

2.0.0-3
2.1.0-1
2.1.0-2
2.1.1-1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "knot-resolver",
            "binary_version": "2.1.1-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "knot-resolver-module-http",
            "binary_version": "2.1.1-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "libkres-dev",
            "binary_version": "2.1.1-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "libkres6",
            "binary_version": "2.1.1-1ubuntu0.1~esm2"
        }
    ]
}

Ubuntu:20.04:LTS / knot-resolver

Package

Name
knot-resolver
Purl
pkg:deb/ubuntu/knot-resolver@3.2.1-3ubuntu2.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.2.1-3ubuntu2.1

Affected versions

3.*

3.2.1-3
3.2.1-3ubuntu1
3.2.1-3ubuntu2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "knot-resolver",
            "binary_version": "3.2.1-3ubuntu2.1"
        },
        {
            "binary_name": "knot-resolver-module-http",
            "binary_version": "3.2.1-3ubuntu2.1"
        }
    ]
}

Ubuntu:Pro:22.04:LTS / knot-resolver

Package

Name
knot-resolver
Purl
pkg:deb/ubuntu/knot-resolver@5.4.4-1ubuntu0.1~esm1?arch=source&distro=esm-apps/jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
5.4.4-1ubuntu0.1~esm1

Affected versions

5.*

5.3.1-1
5.4.2-1
5.4.3-1
5.4.4-1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "knot-resolver",
            "binary_version": "5.4.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "knot-resolver-module-http",
            "binary_version": "5.4.4-1ubuntu0.1~esm1"
        }
    ]
}