USN-5732-1

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Source
https://ubuntu.com/security/notices/USN-5732-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5732-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-5732-1
Upstream
Related
Published
2022-11-17T17:38:45Z
Modified
2026-04-24T09:32:13.791326Z
Summary
unbound vulnerability
Details

It was discovered that Unbound incorrectly handled delegations with a large number of non-responsive nameservers. A remote attacker could possibly use this issue to cause Unbound to consume resources, leading to a denial of service.

References

Affected packages

Ubuntu:18.04:LTS / unbound

Package

Name
unbound
Purl
pkg:deb/ubuntu/unbound@1.6.7-1ubuntu2.6?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.7-1ubuntu2.6

Affected versions

1.*
1.6.5-1
1.6.7-1
1.6.7-1build1
1.6.7-1ubuntu1
1.6.7-1ubuntu2
1.6.7-1ubuntu2.1
1.6.7-1ubuntu2.2
1.6.7-1ubuntu2.3
1.6.7-1ubuntu2.4
1.6.7-1ubuntu2.5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libunbound2",
            "binary_version": "1.6.7-1ubuntu2.6"
        },
        {
            "binary_name": "python-unbound",
            "binary_version": "1.6.7-1ubuntu2.6"
        },
        {
            "binary_name": "python3-unbound",
            "binary_version": "1.6.7-1ubuntu2.6"
        },
        {
            "binary_name": "unbound",
            "binary_version": "1.6.7-1ubuntu2.6"
        },
        {
            "binary_name": "unbound-anchor",
            "binary_version": "1.6.7-1ubuntu2.6"
        },
        {
            "binary_name": "unbound-host",
            "binary_version": "1.6.7-1ubuntu2.6"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:18.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5732-1.json"

Ubuntu:20.04:LTS / unbound

Package

Name
unbound
Purl
pkg:deb/ubuntu/unbound@1.9.4-2ubuntu1.4?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.9.4-2ubuntu1.4

Affected versions

1.*
1.9.0-2ubuntu1
1.9.0-2ubuntu2
1.9.4-2
1.9.4-2ubuntu1
1.9.4-2ubuntu1.1
1.9.4-2ubuntu1.2
1.9.4-2ubuntu1.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libunbound8",
            "binary_version": "1.9.4-2ubuntu1.4"
        },
        {
            "binary_name": "python-unbound",
            "binary_version": "1.9.4-2ubuntu1.4"
        },
        {
            "binary_name": "python3-unbound",
            "binary_version": "1.9.4-2ubuntu1.4"
        },
        {
            "binary_name": "unbound",
            "binary_version": "1.9.4-2ubuntu1.4"
        },
        {
            "binary_name": "unbound-anchor",
            "binary_version": "1.9.4-2ubuntu1.4"
        },
        {
            "binary_name": "unbound-host",
            "binary_version": "1.9.4-2ubuntu1.4"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:20.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5732-1.json"

Ubuntu:22.04:LTS / unbound

Package

Name
unbound
Purl
pkg:deb/ubuntu/unbound@1.13.1-1ubuntu5.3?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.13.1-1ubuntu5.3

Affected versions

1.*
1.13.1-1ubuntu1
1.13.1-1ubuntu3
1.13.1-1ubuntu5
1.13.1-1ubuntu5.1
1.13.1-1ubuntu5.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libunbound8",
            "binary_version": "1.13.1-1ubuntu5.3"
        },
        {
            "binary_name": "python3-unbound",
            "binary_version": "1.13.1-1ubuntu5.3"
        },
        {
            "binary_name": "unbound",
            "binary_version": "1.13.1-1ubuntu5.3"
        },
        {
            "binary_name": "unbound-anchor",
            "binary_version": "1.13.1-1ubuntu5.3"
        },
        {
            "binary_name": "unbound-host",
            "binary_version": "1.13.1-1ubuntu5.3"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map 
{
    "cves": [],
    "ecosystem": "Ubuntu:22.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5732-1.json"