UBUNTU-CVE-2018-6536

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Source
https://ubuntu.com/security/CVE-2018-6536
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-6536.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2018-6536
Upstream
Published
2018-02-02T09:29:00Z
Modified
2025-10-24T04:46:54Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An issue was discovered in Icinga 2.x through 2.8.1. The daemon creates an icinga2.pid file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by leveraging access to this non-root account for icinga2.pid modification before a root script executes a "kill cat /pathname/icinga2.pid" command, as demonstrated by icinga2.init.d.cmake.

References

Affected packages

Ubuntu:16.04:LTS

icinga2

Package

Name
icinga2
Purl
pkg:deb/ubuntu/icinga2@2.4.1-2ubuntu1?arch=source&distro=xenial

Affected ranges

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

Affected versions

2.*

2.3.8-1build1
2.3.11-1
2.4.0-1
2.4.1-1
2.4.1-2
2.4.1-2ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.4.1-2ubuntu1",
            "binary_name": "icinga2"
        },
        {
            "binary_version": "2.4.1-2ubuntu1",
            "binary_name": "icinga2-bin"
        },
        {
            "binary_version": "2.4.1-2ubuntu1",
            "binary_name": "icinga2-classicui"
        },
        {
            "binary_version": "2.4.1-2ubuntu1",
            "binary_name": "icinga2-common"
        },
        {
            "binary_version": "2.4.1-2ubuntu1",
            "binary_name": "icinga2-ido-mysql"
        },
        {
            "binary_version": "2.4.1-2ubuntu1",
            "binary_name": "icinga2-ido-pgsql"
        },
        {
            "binary_version": "2.4.1-2ubuntu1",
            "binary_name": "icinga2-studio"
        },
        {
            "binary_version": "2.4.1-2ubuntu1",
            "binary_name": "libicinga2"
        },
        {
            "binary_version": "2.4.1-2ubuntu1",
            "binary_name": "vim-icinga2"
        }
    ]
}

Ubuntu:18.04:LTS

icinga2

Package

Name
icinga2
Purl
pkg:deb/ubuntu/icinga2@2.8.1-0ubuntu2?arch=source&distro=bionic

Affected ranges

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

Affected versions

2.*

2.7.0-1
2.8.1-0ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.8.1-0ubuntu2",
            "binary_name": "icinga2"
        },
        {
            "binary_version": "2.8.1-0ubuntu2",
            "binary_name": "icinga2-bin"
        },
        {
            "binary_version": "2.8.1-0ubuntu2",
            "binary_name": "icinga2-classicui"
        },
        {
            "binary_version": "2.8.1-0ubuntu2",
            "binary_name": "icinga2-common"
        },
        {
            "binary_version": "2.8.1-0ubuntu2",
            "binary_name": "icinga2-ido-mysql"
        },
        {
            "binary_version": "2.8.1-0ubuntu2",
            "binary_name": "icinga2-ido-pgsql"
        },
        {
            "binary_version": "2.8.1-0ubuntu2",
            "binary_name": "icinga2-studio"
        },
        {
            "binary_version": "2.8.1-0ubuntu2",
            "binary_name": "libicinga2"
        },
        {
            "binary_version": "2.8.1-0ubuntu2",
            "binary_name": "vim-icinga2"
        }
    ]
}

Ubuntu:20.04:LTS

icinga2

Package

Name
icinga2
Purl
pkg:deb/ubuntu/icinga2@2.11.2-1ubuntu3?arch=source&distro=focal

Affected ranges

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

Affected versions

2.*

2.10.5-1build1
2.11.2-1
2.11.2-1ubuntu1
2.11.2-1ubuntu2
2.11.2-1ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.11.2-1ubuntu3",
            "binary_name": "icinga2"
        },
        {
            "binary_version": "2.11.2-1ubuntu3",
            "binary_name": "icinga2-bin"
        },
        {
            "binary_version": "2.11.2-1ubuntu3",
            "binary_name": "icinga2-common"
        },
        {
            "binary_version": "2.11.2-1ubuntu3",
            "binary_name": "icinga2-ido-mysql"
        },
        {
            "binary_version": "2.11.2-1ubuntu3",
            "binary_name": "icinga2-ido-pgsql"
        },
        {
            "binary_version": "2.11.2-1ubuntu3",
            "binary_name": "vim-icinga2"
        }
    ]
}

Ubuntu:22.04:LTS

icinga2

Package

Name
icinga2
Purl
pkg:deb/ubuntu/icinga2@2.13.2-1build2?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*

2.12.3-1
2.13.1-1
2.13.2-1
2.13.2-1build1
2.13.2-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.13.2-1build2",
            "binary_name": "icinga2"
        },
        {
            "binary_version": "2.13.2-1build2",
            "binary_name": "icinga2-bin"
        },
        {
            "binary_version": "2.13.2-1build2",
            "binary_name": "icinga2-common"
        },
        {
            "binary_version": "2.13.2-1build2",
            "binary_name": "icinga2-ido-mysql"
        },
        {
            "binary_version": "2.13.2-1build2",
            "binary_name": "icinga2-ido-pgsql"
        },
        {
            "binary_version": "2.13.2-1build2",
            "binary_name": "vim-icinga2"
        }
    ]
}

Ubuntu:24.04:LTS

icinga2

Package

Name
icinga2
Purl
pkg:deb/ubuntu/icinga2@2.14.2-1build2?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*

2.13.8-1
2.14.1-1
2.14.2-1
2.14.2-1build1
2.14.2-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.14.2-1build2",
            "binary_name": "icinga2"
        },
        {
            "binary_version": "2.14.2-1build2",
            "binary_name": "icinga2-bin"
        },
        {
            "binary_version": "2.14.2-1build2",
            "binary_name": "icinga2-common"
        },
        {
            "binary_version": "2.14.2-1build2",
            "binary_name": "icinga2-ido-mysql"
        },
        {
            "binary_version": "2.14.2-1build2",
            "binary_name": "icinga2-ido-pgsql"
        },
        {
            "binary_version": "2.14.2-1build2",
            "binary_name": "vim-icinga2"
        }
    ]
}

Ubuntu:25.04

icinga2

Package

Name
icinga2
Purl
pkg:deb/ubuntu/icinga2@2.14.5-1?arch=source&distro=plucky

Affected ranges

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

Affected versions

2.*

2.14.2-1build2
2.14.3-1
2.14.4-1
2.14.5-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.14.5-1",
            "binary_name": "icinga2"
        },
        {
            "binary_version": "2.14.5-1",
            "binary_name": "icinga2-bin"
        },
        {
            "binary_version": "2.14.5-1",
            "binary_name": "icinga2-common"
        },
        {
            "binary_version": "2.14.5-1",
            "binary_name": "icinga2-ido-mysql"
        },
        {
            "binary_version": "2.14.5-1",
            "binary_name": "icinga2-ido-pgsql"
        },
        {
            "binary_version": "2.14.5-1",
            "binary_name": "vim-icinga2"
        }
    ]
}

Ubuntu:25.10

icinga2

Package

Name
icinga2
Purl
pkg:deb/ubuntu/icinga2@2.15.0-1?arch=source&distro=questing

Affected ranges

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

Affected versions

2.*

2.14.5-1
2.14.6-1
2.15.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.15.0-1",
            "binary_name": "icinga2"
        },
        {
            "binary_version": "2.15.0-1",
            "binary_name": "icinga2-bin"
        },
        {
            "binary_version": "2.15.0-1",
            "binary_name": "icinga2-common"
        },
        {
            "binary_version": "2.15.0-1",
            "binary_name": "icinga2-ido-mysql"
        },
        {
            "binary_version": "2.15.0-1",
            "binary_name": "icinga2-ido-pgsql"
        },
        {
            "binary_version": "2.15.0-1",
            "binary_name": "vim-icinga2"
        }
    ]
}