UBUNTU-CVE-2026-77692

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Source
https://ubuntu.com/security/CVE-2026-77692
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-77692.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-77692
Upstream
  • CVE-2026-77692
Published
2026-09-16T14:17:00Z
Modified
2026-10-12T20:15:06Z
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
  • Ubuntu - medium
Summary
[none]
Details

An attacker can cause named to abort by sending a crafted DNS-over-HTTPS request with a cryptographically invalid SIG(0) record, and then closing the transport connection prematurely. This issue affects BIND 9 versions 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, and 9.20.9-S1 through 9.20.27-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/2026/UBUNTU-CVE-2026-77692.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/2026/UBUNTU-CVE-2026-77692.json"
Ubuntu:22.04:LTS
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/2026/UBUNTU-CVE-2026-77692.json"
Ubuntu:24.04:LTS
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/2026/UBUNTU-CVE-2026-77692.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

Affected versions

1:9.*
1:9.20.11-1ubuntu2
1:9.20.11-1ubuntu3
1:9.20.18-1ubuntu1
1:9.20.18-1ubuntu2
1:9.20.18-1ubuntu2.1
1:9.20.24-1ubuntu0.1
1:9.20.24-1ubuntu0.2
1:9.20.24-1ubuntu0.3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "bind9",
            "binary_version":  "1:9.20.24-1ubuntu0.3"
        },
        {
            "binary_name":  "bind9-dnsutils",
            "binary_version":  "1:9.20.24-1ubuntu0.3"
        },
        {
            "binary_name":  "bind9-host",
            "binary_version":  "1:9.20.24-1ubuntu0.3"
        },
        {
            "binary_name":  "bind9-libs",
            "binary_version":  "1:9.20.24-1ubuntu0.3"
        },
        {
            "binary_name":  "bind9-utils",
            "binary_version":  "1:9.20.24-1ubuntu0.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-77692.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/2026/UBUNTU-CVE-2026-77692.json"