UBUNTU-CVE-2026-63418

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Source
https://ubuntu.com/security/CVE-2026-63418
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63418.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-63418
Upstream
Published
2026-11-03T18:18:00Z
Modified
2026-11-05T11:46:35Z
Severity
  • 7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Monitoring Plugins is a suite of plugins for monitoring applications. From 3.0.0-rc1 until 3.0.1, check_icmp stores the number of hosts supplied through -H or --Host on the command line, or through --extra-opts files containing Host= entries, in an unsigned short. More than 65,535 hosts wrap the counter, causing process_arguments() to allocate an undersized hosts array and then write subsequent entries out of bounds before main() calls setuid(getuid()). On installations where check_icmp is setuid root, a local low-privileged attacker can corrupt heap memory while the process still has root privileges; reliable privilege escalation has not been demonstrated. Installations that use cap_net_raw file capabilities instead of setuid are not exposed to the privilege-escalation consequence. This issue is fixed in version 3.0.1.

References

Affected packages

Ubuntu:16.04:LTS
monitoring-plugins

Package

Name
monitoring-plugins
Purl
pkg:deb/ubuntu/monitoring-plugins?arch=source&distro=xenial

Affected ranges

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

Affected versions

2.*
2.1.2-2ubuntu1
2.1.2-2ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "monitoring-plugins",
            "binary_version": "2.1.2-2ubuntu2"
        },
        {
            "binary_name": "monitoring-plugins-basic",
            "binary_version": "2.1.2-2ubuntu2"
        },
        {
            "binary_name": "monitoring-plugins-common",
            "binary_version": "2.1.2-2ubuntu2"
        },
        {
            "binary_name": "monitoring-plugins-standard",
            "binary_version": "2.1.2-2ubuntu2"
        },
        {
            "binary_name": "nagios-plugins",
            "binary_version": "2.1.2-2ubuntu2"
        },
        {
            "binary_name": "nagios-plugins-basic",
            "binary_version": "2.1.2-2ubuntu2"
        },
        {
            "binary_name": "nagios-plugins-common",
            "binary_version": "2.1.2-2ubuntu2"
        },
        {
            "binary_name": "nagios-plugins-extra",
            "binary_version": "2.1.2-2ubuntu2"
        },
        {
            "binary_name": "nagios-plugins-standard",
            "binary_version": "2.1.2-2ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63418.json"
Ubuntu:18.04:LTS
monitoring-plugins

Package

Name
monitoring-plugins
Purl
pkg:deb/ubuntu/monitoring-plugins?arch=source&distro=bionic

Affected ranges

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

Affected versions

2.*
2.2-3ubuntu1
2.2-3ubuntu2
2.2-3ubuntu3
2.2-3ubuntu3.18.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "monitoring-plugins",
            "binary_version": "2.2-3ubuntu3.18.04.1"
        },
        {
            "binary_name": "monitoring-plugins-basic",
            "binary_version": "2.2-3ubuntu3.18.04.1"
        },
        {
            "binary_name": "monitoring-plugins-common",
            "binary_version": "2.2-3ubuntu3.18.04.1"
        },
        {
            "binary_name": "monitoring-plugins-standard",
            "binary_version": "2.2-3ubuntu3.18.04.1"
        },
        {
            "binary_name": "nagios-plugins",
            "binary_version": "2.2-3ubuntu3.18.04.1"
        },
        {
            "binary_name": "nagios-plugins-basic",
            "binary_version": "2.2-3ubuntu3.18.04.1"
        },
        {
            "binary_name": "nagios-plugins-common",
            "binary_version": "2.2-3ubuntu3.18.04.1"
        },
        {
            "binary_name": "nagios-plugins-standard",
            "binary_version": "2.2-3ubuntu3.18.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63418.json"
Ubuntu:20.04:LTS
monitoring-plugins

Package

Name
monitoring-plugins
Purl
pkg:deb/ubuntu/monitoring-plugins?arch=source&distro=focal

Affected ranges

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

Affected versions

2.*
2.2-6build2
2.2-6ubuntu1
2.2-6ubuntu1.1
2.2-6ubuntu1.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "monitoring-plugins",
            "binary_version": "2.2-6ubuntu1.2"
        },
        {
            "binary_name": "monitoring-plugins-basic",
            "binary_version": "2.2-6ubuntu1.2"
        },
        {
            "binary_name": "monitoring-plugins-common",
            "binary_version": "2.2-6ubuntu1.2"
        },
        {
            "binary_name": "monitoring-plugins-standard",
            "binary_version": "2.2-6ubuntu1.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63418.json"
Ubuntu:22.04:LTS
monitoring-plugins

Package

Name
monitoring-plugins
Purl
pkg:deb/ubuntu/monitoring-plugins?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*
2.3.1-1ubuntu2
2.3.1-1ubuntu3
2.3.1-1ubuntu4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "monitoring-plugins",
            "binary_version": "2.3.1-1ubuntu4"
        },
        {
            "binary_name": "monitoring-plugins-basic",
            "binary_version": "2.3.1-1ubuntu4"
        },
        {
            "binary_name": "monitoring-plugins-common",
            "binary_version": "2.3.1-1ubuntu4"
        },
        {
            "binary_name": "monitoring-plugins-standard",
            "binary_version": "2.3.1-1ubuntu4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63418.json"
Ubuntu:24.04:LTS
monitoring-plugins

Package

Name
monitoring-plugins
Purl
pkg:deb/ubuntu/monitoring-plugins?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*
2.3.3-6ubuntu1
2.3.5-1ubuntu1
2.3.5-1ubuntu2
2.3.5-1ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "monitoring-plugins",
            "binary_version": "2.3.5-1ubuntu3"
        },
        {
            "binary_name": "monitoring-plugins-basic",
            "binary_version": "2.3.5-1ubuntu3"
        },
        {
            "binary_name": "monitoring-plugins-common",
            "binary_version": "2.3.5-1ubuntu3"
        },
        {
            "binary_name": "monitoring-plugins-standard",
            "binary_version": "2.3.5-1ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63418.json"
Ubuntu:26.04:LTS
monitoring-plugins

Package

Name
monitoring-plugins
Purl
pkg:deb/ubuntu/monitoring-plugins?arch=source&distro=resolute

Affected ranges

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

Affected versions

2.*
2.4.0-1ubuntu1
2.4.0-1ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "monitoring-plugins",
            "binary_version": "2.4.0-1ubuntu2"
        },
        {
            "binary_name": "monitoring-plugins-basic",
            "binary_version": "2.4.0-1ubuntu2"
        },
        {
            "binary_name": "monitoring-plugins-common",
            "binary_version": "2.4.0-1ubuntu2"
        },
        {
            "binary_name": "monitoring-plugins-standard",
            "binary_version": "2.4.0-1ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63418.json"
Ubuntu:26.10
monitoring-plugins

Package

Name
monitoring-plugins
Purl
pkg:deb/ubuntu/monitoring-plugins?arch=source&distro=stonking

Affected ranges

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

Affected versions

2.*
2.4.0-1ubuntu2
2.4.0-1ubuntu4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "monitoring-plugins",
            "binary_version": "2.4.0-1ubuntu4"
        },
        {
            "binary_name": "monitoring-plugins-basic",
            "binary_version": "2.4.0-1ubuntu4"
        },
        {
            "binary_name": "monitoring-plugins-common",
            "binary_version": "2.4.0-1ubuntu4"
        },
        {
            "binary_name": "monitoring-plugins-standard",
            "binary_version": "2.4.0-1ubuntu4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63418.json"