USN-7666-1

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Source
https://ubuntu.com/security/notices/USN-7666-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7666-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-7666-1
Upstream
Related
Published
2025-07-22T15:58:09.898779Z
Modified
2025-10-13T04:42:15Z
Summary
unbound vulnerabilities
Details

Xiang Li discovered that Unbound incorrectly handled EDNS Client Subnet (ECS) in certain configurations. A remote attacker could possibly use this issue to perform a cache poisoning attack called Rebirthday Attack.

References

Affected packages

Ubuntu:22.04:LTS / unbound

Package

Name
unbound
Purl
pkg:deb/ubuntu/unbound@1.13.1-1ubuntu5.11?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.13.1-1ubuntu5.11

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
1.13.1-1ubuntu5.3
1.13.1-1ubuntu5.4
1.13.1-1ubuntu5.5
1.13.1-1ubuntu5.7
1.13.1-1ubuntu5.8
1.13.1-1ubuntu5.10

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libunbound-dev",
            "binary_version": "1.13.1-1ubuntu5.11"
        },
        {
            "binary_name": "libunbound8",
            "binary_version": "1.13.1-1ubuntu5.11"
        },
        {
            "binary_name": "python3-unbound",
            "binary_version": "1.13.1-1ubuntu5.11"
        },
        {
            "binary_name": "unbound",
            "binary_version": "1.13.1-1ubuntu5.11"
        },
        {
            "binary_name": "unbound-anchor",
            "binary_version": "1.13.1-1ubuntu5.11"
        },
        {
            "binary_name": "unbound-host",
            "binary_version": "1.13.1-1ubuntu5.11"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7666-1.json"

cves_map

{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2025-5994",
            "severity": [
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/R:U/V:C"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:24.04:LTS / unbound

Package

Name
unbound
Purl
pkg:deb/ubuntu/unbound@1.19.2-1ubuntu3.5?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.19.2-1ubuntu3.5

Affected versions

1.*

1.17.1-2
1.18.0-2ubuntu1
1.18.0-2ubuntu2
1.19.1-1ubuntu1
1.19.2-1ubuntu1
1.19.2-1ubuntu3
1.19.2-1ubuntu3.1
1.19.2-1ubuntu3.2
1.19.2-1ubuntu3.3
1.19.2-1ubuntu3.4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libunbound-dev",
            "binary_version": "1.19.2-1ubuntu3.5"
        },
        {
            "binary_name": "libunbound8",
            "binary_version": "1.19.2-1ubuntu3.5"
        },
        {
            "binary_name": "python3-unbound",
            "binary_version": "1.19.2-1ubuntu3.5"
        },
        {
            "binary_name": "unbound",
            "binary_version": "1.19.2-1ubuntu3.5"
        },
        {
            "binary_name": "unbound-anchor",
            "binary_version": "1.19.2-1ubuntu3.5"
        },
        {
            "binary_name": "unbound-host",
            "binary_version": "1.19.2-1ubuntu3.5"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7666-1.json"

cves_map

{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "id": "CVE-2025-5994",
            "severity": [
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/R:U/V:C"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:25.04 / unbound

Package

Name
unbound
Purl
pkg:deb/ubuntu/unbound@1.22.0-1ubuntu1.1?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.22.0-1ubuntu1.1

Affected versions

1.*

1.20.0-1ubuntu2
1.20.0-1ubuntu2.1
1.20.0-1ubuntu2.2
1.22.0-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libunbound-dev",
            "binary_version": "1.22.0-1ubuntu1.1"
        },
        {
            "binary_name": "libunbound8",
            "binary_version": "1.22.0-1ubuntu1.1"
        },
        {
            "binary_name": "python3-unbound",
            "binary_version": "1.22.0-1ubuntu1.1"
        },
        {
            "binary_name": "unbound",
            "binary_version": "1.22.0-1ubuntu1.1"
        },
        {
            "binary_name": "unbound-anchor",
            "binary_version": "1.22.0-1ubuntu1.1"
        },
        {
            "binary_name": "unbound-host",
            "binary_version": "1.22.0-1ubuntu1.1"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7666-1.json"

cves_map

{
    "ecosystem": "Ubuntu:25.04",
    "cves": [
        {
            "id": "CVE-2025-5994",
            "severity": [
                {
                    "type": "CVSS_V4",
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/R:U/V:C"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}