UBUNTU-CVE-2025-40780

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Source
https://ubuntu.com/security/CVE-2025-40780
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-40780.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-40780
Upstream
  • CVE-2025-40780
Downstream
USN (2)
Related
USN (2)
Published
2025-10-22T00:00:00Z
Modified
2026-10-12T20:15:05Z
Severity
  • 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use. This issue affects BIND 9 versions 9.16.0 through 9.16.50, 9.18.0 through 9.18.39, 9.20.0 through 9.20.13, 9.21.0 through 9.21.12, 9.16.8-S1 through 9.16.50-S1, 9.18.11-S1 through 9.18.39-S1, and 9.20.9-S1 through 9.20.13-S1.

References

Affected packages

Ubuntu:18.04:LTS
isc-dhcp

Package

Name
isc-dhcp
Purl
pkg:deb/ubuntu/isc-dhcp?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.3.5-3ubuntu2
4.3.5-3ubuntu3
4.3.5-3ubuntu4
4.3.5-3ubuntu5
4.3.5-3ubuntu6
4.3.5-3ubuntu7
4.3.5-3ubuntu7.1
4.3.5-3ubuntu7.2
4.3.5-3ubuntu7.3
4.3.5-3ubuntu7.4

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "isc-dhcp-client",
            "binary_version":  "4.3.5-3ubuntu7.4"
        },
        {
            "binary_name":  "isc-dhcp-client-ddns",
            "binary_version":  "4.3.5-3ubuntu7.4"
        },
        {
            "binary_name":  "isc-dhcp-common",
            "binary_version":  "4.3.5-3ubuntu7.4"
        },
        {
            "binary_name":  "isc-dhcp-relay",
            "binary_version":  "4.3.5-3ubuntu7.4"
        },
        {
            "binary_name":  "isc-dhcp-server",
            "binary_version":  "4.3.5-3ubuntu7.4"
        },
        {
            "binary_name":  "isc-dhcp-server-ldap",
            "binary_version":  "4.3.5-3ubuntu7.4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-40780.json"
Ubuntu:20.04:LTS
bind9-libs

Package

Name
bind9-libs
Purl
pkg:deb/ubuntu/bind9-libs?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:9.*
1:9.11.16+dfsg-3~build1
1:9.11.16+dfsg-3~ubuntu1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libbind9-161",
            "binary_version":  "1:9.11.16+dfsg-3~ubuntu1"
        },
        {
            "binary_name":  "libdns-export1109",
            "binary_version":  "1:9.11.16+dfsg-3~ubuntu1"
        },
        {
            "binary_name":  "libdns1109",
            "binary_version":  "1:9.11.16+dfsg-3~ubuntu1"
        },
        {
            "binary_name":  "libirs-export161",
            "binary_version":  "1:9.11.16+dfsg-3~ubuntu1"
        },
        {
            "binary_name":  "libirs161",
            "binary_version":  "1:9.11.16+dfsg-3~ubuntu1"
        },
        {
            "binary_name":  "libisc-export1105",
            "binary_version":  "1:9.11.16+dfsg-3~ubuntu1"
        },
        {
            "binary_name":  "libisc1105",
            "binary_version":  "1:9.11.16+dfsg-3~ubuntu1"
        },
        {
            "binary_name":  "libisccc-export161",
            "binary_version":  "1:9.11.16+dfsg-3~ubuntu1"
        },
        {
            "binary_name":  "libisccc161",
            "binary_version":  "1:9.11.16+dfsg-3~ubuntu1"
        },
        {
            "binary_name":  "libisccfg-export163",
            "binary_version":  "1:9.11.16+dfsg-3~ubuntu1"
        },
        {
            "binary_name":  "libisccfg163",
            "binary_version":  "1:9.11.16+dfsg-3~ubuntu1"
        },
        {
            "binary_name":  "liblwres161",
            "binary_version":  "1:9.11.16+dfsg-3~ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-40780.json"
Ubuntu:22.04:LTS
bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:9.18.39-0ubuntu0.22.04.2

Affected versions

1:9.*
1:9.16.15-1ubuntu1
1:9.16.15-1ubuntu2
1:9.16.15-1ubuntu3
1:9.18.0-2ubuntu1
1:9.18.0-2ubuntu2
1:9.18.0-2ubuntu3
1:9.18.1-1ubuntu1
1:9.18.1-1ubuntu1.1
1:9.18.1-1ubuntu1.2
1:9.18.1-1ubuntu1.3
1:9.18.12-0ubuntu0.22.04.1
1:9.18.12-0ubuntu0.22.04.2
1:9.18.12-0ubuntu0.22.04.3
1:9.18.18-0ubuntu0.22.04.1
1:9.18.18-0ubuntu0.22.04.2
1:9.18.24-0ubuntu0.22.04.1
1:9.18.28-0ubuntu0.22.04.1
1:9.18.30-0ubuntu0.22.04.1
1:9.18.30-0ubuntu0.22.04.2
1:9.18.39-0ubuntu0.22.04.1

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "bind9",
            "binary_version":  "1:9.18.39-0ubuntu0.22.04.2"
        },
        {
            "binary_name":  "bind9-dnsutils",
            "binary_version":  "1:9.18.39-0ubuntu0.22.04.2"
        },
        {
            "binary_name":  "bind9-host",
            "binary_version":  "1:9.18.39-0ubuntu0.22.04.2"
        },
        {
            "binary_name":  "bind9-libs",
            "binary_version":  "1:9.18.39-0ubuntu0.22.04.2"
        },
        {
            "binary_name":  "bind9-utils",
            "binary_version":  "1:9.18.39-0ubuntu0.22.04.2"
        },
        {
            "binary_name":  "bind9utils",
            "binary_version":  "1:9.18.39-0ubuntu0.22.04.2"
        },
        {
            "binary_name":  "dnsutils",
            "binary_version":  "1:9.18.39-0ubuntu0.22.04.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-40780.json"
bind9-libs

Package

Name
bind9-libs
Purl
pkg:deb/ubuntu/bind9-libs?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:9.*
1:9.11.19+dfsg-2.1ubuntu1
1:9.11.19+dfsg-2.1ubuntu2
1:9.11.19+dfsg-2.1ubuntu3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libbind9-161",
            "binary_version":  "1:9.11.19+dfsg-2.1ubuntu3"
        },
        {
            "binary_name":  "libdns-export1110",
            "binary_version":  "1:9.11.19+dfsg-2.1ubuntu3"
        },
        {
            "binary_name":  "libdns1110",
            "binary_version":  "1:9.11.19+dfsg-2.1ubuntu3"
        },
        {
            "binary_name":  "libirs-export161",
            "binary_version":  "1:9.11.19+dfsg-2.1ubuntu3"
        },
        {
            "binary_name":  "libirs161",
            "binary_version":  "1:9.11.19+dfsg-2.1ubuntu3"
        },
        {
            "binary_name":  "libisc-export1105",
            "binary_version":  "1:9.11.19+dfsg-2.1ubuntu3"
        },
        {
            "binary_name":  "libisc1105",
            "binary_version":  "1:9.11.19+dfsg-2.1ubuntu3"
        },
        {
            "binary_name":  "libisccc-export161",
            "binary_version":  "1:9.11.19+dfsg-2.1ubuntu3"
        },
        {
            "binary_name":  "libisccc161",
            "binary_version":  "1:9.11.19+dfsg-2.1ubuntu3"
        },
        {
            "binary_name":  "libisccfg-export163",
            "binary_version":  "1:9.11.19+dfsg-2.1ubuntu3"
        },
        {
            "binary_name":  "libisccfg163",
            "binary_version":  "1:9.11.19+dfsg-2.1ubuntu3"
        },
        {
            "binary_name":  "liblwres161",
            "binary_version":  "1:9.11.19+dfsg-2.1ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-40780.json"
Ubuntu:24.04:LTS
bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:9.18.39-0ubuntu0.24.04.2

Affected versions

1:9.*
1:9.18.18-0ubuntu2
1:9.18.21-0ubuntu1
1:9.18.24-0ubuntu3
1:9.18.24-0ubuntu4
1:9.18.24-0ubuntu5
1:9.18.28-0ubuntu0.24.04.1
1:9.18.30-0ubuntu0.24.04.1
1:9.18.30-0ubuntu0.24.04.2
1:9.18.39-0ubuntu0.24.04.1

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "bind9",
            "binary_version":  "1:9.18.39-0ubuntu0.24.04.2"
        },
        {
            "binary_name":  "bind9-dnsutils",
            "binary_version":  "1:9.18.39-0ubuntu0.24.04.2"
        },
        {
            "binary_name":  "bind9-host",
            "binary_version":  "1:9.18.39-0ubuntu0.24.04.2"
        },
        {
            "binary_name":  "bind9-libs",
            "binary_version":  "1:9.18.39-0ubuntu0.24.04.2"
        },
        {
            "binary_name":  "bind9-utils",
            "binary_version":  "1:9.18.39-0ubuntu0.24.04.2"
        },
        {
            "binary_name":  "bind9utils",
            "binary_version":  "1:9.18.39-0ubuntu0.24.04.2"
        },
        {
            "binary_name":  "dnsutils",
            "binary_version":  "1:9.18.39-0ubuntu0.24.04.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-40780.json"
isc-dhcp

Package

Name
isc-dhcp
Purl
pkg:deb/ubuntu/isc-dhcp?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.4.3-P1-2ubuntu5
4.4.3-P1-4ubuntu1
4.4.3-P1-4ubuntu2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "isc-dhcp-client",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-client-ddns",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-common",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-keama",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-relay",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-server",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-server-ldap",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-40780.json"
Ubuntu:25.10
bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:9.20.11-1ubuntu2.1

Affected versions

1:9.*
1:9.20.4-3ubuntu1
1:9.20.4-3ubuntu2
1:9.20.4-3ubuntu3
1:9.20.9-2ubuntu1
1:9.20.10-1ubuntu1
1:9.20.11-1ubuntu1
1:9.20.11-1ubuntu2

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "bind9",
            "binary_version":  "1:9.20.11-1ubuntu2.1"
        },
        {
            "binary_name":  "bind9-dnsutils",
            "binary_version":  "1:9.20.11-1ubuntu2.1"
        },
        {
            "binary_name":  "bind9-host",
            "binary_version":  "1:9.20.11-1ubuntu2.1"
        },
        {
            "binary_name":  "bind9-libs",
            "binary_version":  "1:9.20.11-1ubuntu2.1"
        },
        {
            "binary_name":  "bind9-utils",
            "binary_version":  "1:9.20.11-1ubuntu2.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-40780.json"
isc-dhcp

Package

Name
isc-dhcp
Purl
pkg:deb/ubuntu/isc-dhcp?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.4.3-P1-4ubuntu2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "isc-dhcp-client",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-client-ddns",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-common",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-keama",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-relay",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-server",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-server-ldap",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-40780.json"
Ubuntu:26.04:LTS
bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:9.20.11-1ubuntu3

Affected versions

1:9.*
1:9.20.11-1ubuntu2

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "bind9",
            "binary_version":  "1:9.20.11-1ubuntu3"
        },
        {
            "binary_name":  "bind9-dnsutils",
            "binary_version":  "1:9.20.11-1ubuntu3"
        },
        {
            "binary_name":  "bind9-host",
            "binary_version":  "1:9.20.11-1ubuntu3"
        },
        {
            "binary_name":  "bind9-libs",
            "binary_version":  "1:9.20.11-1ubuntu3"
        },
        {
            "binary_name":  "bind9-utils",
            "binary_version":  "1:9.20.11-1ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-40780.json"
isc-dhcp

Package

Name
isc-dhcp
Purl
pkg:deb/ubuntu/isc-dhcp?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.4.3-P1-4ubuntu2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "isc-dhcp-client",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-client-ddns",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-common",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-keama",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-relay",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-server",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        },
        {
            "binary_name":  "isc-dhcp-server-ldap",
            "binary_version":  "4.4.3-P1-4ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-40780.json"
Ubuntu:Pro:20.04:LTS
bind9

Package

Name
bind9
Purl
pkg:deb/ubuntu/bind9?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1:9.18.30-0ubuntu0.20.04.2+esm1

Affected versions

1:9.*
1:9.11.5.P4+dfsg-5.1ubuntu2
1:9.11.5.P4+dfsg-5.1ubuntu3
1:9.11.5.P4+dfsg-5.1ubuntu4
1:9.11.5.P4+dfsg-5.1ubuntu5
1:9.11.14+dfsg-1ubuntu1
1:9.11.14+dfsg-3ubuntu1
1:9.16.0-1ubuntu3
1:9.16.0-1ubuntu4
1:9.16.0-1ubuntu5
1:9.16.1-0ubuntu1
1:9.16.1-0ubuntu2
1:9.16.1-0ubuntu2.1
1:9.16.1-0ubuntu2.2
1:9.16.1-0ubuntu2.3
1:9.16.1-0ubuntu2.4
1:9.16.1-0ubuntu2.6
1:9.16.1-0ubuntu2.7
1:9.16.1-0ubuntu2.8
1:9.16.1-0ubuntu2.9
1:9.16.1-0ubuntu2.10
1:9.16.1-0ubuntu2.11
1:9.16.1-0ubuntu2.12
1:9.16.1-0ubuntu2.14
1:9.16.1-0ubuntu2.15
1:9.16.1-0ubuntu2.16
1:9.16.48-0ubuntu0.20.04.1
1:9.18.28-0ubuntu0.20.04.1
1:9.18.30-0ubuntu0.20.04.1
1:9.18.30-0ubuntu0.20.04.2

Ecosystem specific 

{
    "availability":  "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries":  [
        {
            "binary_name":  "bind9",
            "binary_version":  "1:9.18.30-0ubuntu0.20.04.2+esm1"
        },
        {
            "binary_name":  "bind9-dnsutils",
            "binary_version":  "1:9.18.30-0ubuntu0.20.04.2+esm1"
        },
        {
            "binary_name":  "bind9-host",
            "binary_version":  "1:9.18.30-0ubuntu0.20.04.2+esm1"
        },
        {
            "binary_name":  "bind9-libs",
            "binary_version":  "1:9.18.30-0ubuntu0.20.04.2+esm1"
        },
        {
            "binary_name":  "bind9-utils",
            "binary_version":  "1:9.18.30-0ubuntu0.20.04.2+esm1"
        },
        {
            "binary_name":  "bind9utils",
            "binary_version":  "1:9.18.30-0ubuntu0.20.04.2+esm1"
        },
        {
            "binary_name":  "dnsutils",
            "binary_version":  "1:9.18.30-0ubuntu0.20.04.2+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-40780.json"