UBUNTU-CVE-2020-10188

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Source
https://ubuntu.com/security/CVE-2020-10188
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10188.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-10188
Upstream
Downstream
USN (3)
Related
USN (3)
Published
2020-03-06T15:15:00Z
Modified
2026-05-20T16:04:07Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

utility.c in telnetd in netkit telnet through 0.17 allows remote attackers to execute arbitrary code via short writes or urgent data, because of a buffer overflow involving the netclear and nextitem functions.

References

Affected packages

Ubuntu:16.04:LTS
netkit-telnet-ssl

Package

Name
netkit-telnet-ssl
Purl
pkg:deb/ubuntu/netkit-telnet-ssl?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*
0.17.40+0.2-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "telnet-ssl",
            "binary_version":  "0.17.40+0.2-1"
        },
        {
            "binary_name":  "telnetd-ssl",
            "binary_version":  "0.17.40+0.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10188.json"
Ubuntu:18.04:LTS
inetutils

Package

Name
inetutils
Purl
pkg:deb/ubuntu/inetutils?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2:1.9.4-3ubuntu0.1

Affected versions

2:1.*
2:1.9.4-2build1
2:1.9.4-3

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "inetutils-ftp",
            "binary_version":  "2:1.9.4-3ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-ftpd",
            "binary_version":  "2:1.9.4-3ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-inetd",
            "binary_version":  "2:1.9.4-3ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-ping",
            "binary_version":  "2:1.9.4-3ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-syslogd",
            "binary_version":  "2:1.9.4-3ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-talk",
            "binary_version":  "2:1.9.4-3ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-talkd",
            "binary_version":  "2:1.9.4-3ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-telnet",
            "binary_version":  "2:1.9.4-3ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-telnetd",
            "binary_version":  "2:1.9.4-3ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-tools",
            "binary_version":  "2:1.9.4-3ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-traceroute",
            "binary_version":  "2:1.9.4-3ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10188.json"
netkit-telnet-ssl

Package

Name
netkit-telnet-ssl
Purl
pkg:deb/ubuntu/netkit-telnet-ssl?arch=source&distro=bionic

Affected ranges

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

Affected versions

0.*
0.17.41+0.2-3
0.17.41+0.2-3build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "telnet-ssl",
            "binary_version":  "0.17.41+0.2-3build1"
        },
        {
            "binary_name":  "telnetd-ssl",
            "binary_version":  "0.17.41+0.2-3build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10188.json"
Ubuntu:20.04:LTS
inetutils

Package

Name
inetutils
Purl
pkg:deb/ubuntu/inetutils?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2:1.9.4-11ubuntu0.1

Affected versions

2:1.*
2:1.9.4-10build1
2:1.9.4-11

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "inetutils-ftp",
            "binary_version":  "2:1.9.4-11ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-ftpd",
            "binary_version":  "2:1.9.4-11ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-inetd",
            "binary_version":  "2:1.9.4-11ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-ping",
            "binary_version":  "2:1.9.4-11ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-syslogd",
            "binary_version":  "2:1.9.4-11ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-talk",
            "binary_version":  "2:1.9.4-11ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-talkd",
            "binary_version":  "2:1.9.4-11ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-telnet",
            "binary_version":  "2:1.9.4-11ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-telnetd",
            "binary_version":  "2:1.9.4-11ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-tools",
            "binary_version":  "2:1.9.4-11ubuntu0.1"
        },
        {
            "binary_name":  "inetutils-traceroute",
            "binary_version":  "2:1.9.4-11ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10188.json"
netkit-telnet-ssl

Package

Name
netkit-telnet-ssl
Purl
pkg:deb/ubuntu/netkit-telnet-ssl?arch=source&distro=focal

Affected ranges

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

Affected versions

0.*
0.17.41+0.2-3.2
0.17.41+0.2-3.2build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "telnet-ssl",
            "binary_version":  "0.17.41+0.2-3.2build1"
        },
        {
            "binary_name":  "telnetd-ssl",
            "binary_version":  "0.17.41+0.2-3.2build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10188.json"
Ubuntu:22.04:LTS
netkit-telnet-ssl

Package

Name
netkit-telnet-ssl
Purl
pkg:deb/ubuntu/netkit-telnet-ssl?arch=source&distro=jammy

Affected ranges

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

Affected versions

0.*
0.17.41+0.2-3.3build1
0.17.41+0.2-3.3build2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "telnet-ssl",
            "binary_version":  "0.17.41+0.2-3.3build2"
        },
        {
            "binary_name":  "telnetd-ssl",
            "binary_version":  "0.17.41+0.2-3.3build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10188.json"
Ubuntu:24.04:LTS
netkit-telnet-ssl

Package

Name
netkit-telnet-ssl
Purl
pkg:deb/ubuntu/netkit-telnet-ssl?arch=source&distro=noble

Affected ranges

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

Affected versions

0.*
0.17.41+really0.17-4
0.17.41+really0.17-4build1
0.17.41+really0.17-4build2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "telnet-ssl",
            "binary_version":  "0.17.41+really0.17-4build2"
        },
        {
            "binary_name":  "telnetd-ssl",
            "binary_version":  "0.17.41+really0.17-4build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10188.json"
Ubuntu:25.10
netkit-telnet-ssl

Package

Name
netkit-telnet-ssl
Purl
pkg:deb/ubuntu/netkit-telnet-ssl?arch=source&distro=questing

Affected ranges

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

Affected versions

0.*
0.17.41+really0.17-5
0.17.41+really0.17-6

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "telnet-ssl",
            "binary_version":  "0.17.41+really0.17-6"
        },
        {
            "binary_name":  "telnetd-ssl",
            "binary_version":  "0.17.41+really0.17-6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10188.json"
Ubuntu:26.04:LTS
netkit-telnet-ssl

Package

Name
netkit-telnet-ssl
Purl
pkg:deb/ubuntu/netkit-telnet-ssl?arch=source&distro=resolute

Affected ranges

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

Affected versions

0.*
0.17.41+really0.17-6
0.17.41+really0.17-7

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "telnet-ssl",
            "binary_version":  "0.17.41+really0.17-7"
        },
        {
            "binary_name":  "telnetd-ssl",
            "binary_version":  "0.17.41+really0.17-7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10188.json"
Ubuntu:Pro:14.04:LTS
inetutils

Package

Name
inetutils
Purl
pkg:deb/ubuntu/inetutils?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2:1.9.2-1ubuntu0.1~esm2

Affected versions

2:1.*
2:1.9.1.306-0a482-1
2:1.9.1.363-bbc1-1
2:1.9.2-1
2:1.9.2-1ubuntu0.1~esm1

Ecosystem specific 

{
    "availability":  "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
    "binaries":  [
        {
            "binary_name":  "inetutils-ftp",
            "binary_version":  "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "inetutils-ftpd",
            "binary_version":  "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "inetutils-inetd",
            "binary_version":  "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "inetutils-ping",
            "binary_version":  "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "inetutils-syslogd",
            "binary_version":  "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "inetutils-talk",
            "binary_version":  "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "inetutils-talkd",
            "binary_version":  "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "inetutils-telnet",
            "binary_version":  "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "inetutils-telnetd",
            "binary_version":  "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "inetutils-tools",
            "binary_version":  "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name":  "inetutils-traceroute",
            "binary_version":  "2:1.9.2-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10188.json"
Ubuntu:Pro:16.04:LTS
inetutils

Package

Name
inetutils
Purl
pkg:deb/ubuntu/inetutils?arch=source&distro=esm-apps%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2:1.9.4-1ubuntu0.1~esm1

Affected versions

2:1.*
2:1.9.4-1
2:1.9.4-1build1

Ecosystem specific 

{
    "availability":  "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries":  [
        {
            "binary_name":  "inetutils-ftp",
            "binary_version":  "2:1.9.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "inetutils-ftpd",
            "binary_version":  "2:1.9.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "inetutils-inetd",
            "binary_version":  "2:1.9.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "inetutils-ping",
            "binary_version":  "2:1.9.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "inetutils-syslogd",
            "binary_version":  "2:1.9.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "inetutils-talk",
            "binary_version":  "2:1.9.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "inetutils-talkd",
            "binary_version":  "2:1.9.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "inetutils-telnet",
            "binary_version":  "2:1.9.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "inetutils-telnetd",
            "binary_version":  "2:1.9.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "inetutils-tools",
            "binary_version":  "2:1.9.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "inetutils-traceroute",
            "binary_version":  "2:1.9.4-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10188.json"