UBUNTU-CVE-2018-20022

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Source
https://ubuntu.com/security/CVE-2018-20022
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20022.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2018-20022
Upstream
Related
Published
2018-12-19T00:00:00Z
Modified
2025-07-14T07:14:55.274722Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

LibVNC before 2f5b2ad1c6c99b1ac6482c95844a84d66bb52838 contains multiple weaknesses CWE-665: Improper Initialization vulnerability in VNC client code that allows attacker to read stack memory and can be abuse for information disclosure. Combined with another vulnerability, it can be used to leak stack memory layout and in bypassing ASLR

References

Affected packages

Ubuntu:14.04:LTS / libvncserver

Package

Name
libvncserver
Purl
pkg:deb/ubuntu/libvncserver@0.9.9+dfsg-1ubuntu1.4?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.9.9+dfsg-1ubuntu1.4

Affected versions

0.*

0.9.9+dfsg-1
0.9.9+dfsg-1ubuntu1
0.9.9+dfsg-1ubuntu1.1
0.9.9+dfsg-1ubuntu1.2
0.9.9+dfsg-1ubuntu1.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.9+dfsg-1ubuntu1.4",
            "binary_name": "libvncserver-config"
        },
        {
            "binary_version": "0.9.9+dfsg-1ubuntu1.4",
            "binary_name": "libvncserver-config-dbgsym"
        },
        {
            "binary_version": "0.9.9+dfsg-1ubuntu1.4",
            "binary_name": "libvncserver-dev"
        },
        {
            "binary_version": "0.9.9+dfsg-1ubuntu1.4",
            "binary_name": "libvncserver-dev-dbgsym"
        },
        {
            "binary_version": "0.9.9+dfsg-1ubuntu1.4",
            "binary_name": "libvncserver0"
        },
        {
            "binary_version": "0.9.9+dfsg-1ubuntu1.4",
            "binary_name": "libvncserver0-dbg"
        },
        {
            "binary_version": "0.9.9+dfsg-1ubuntu1.4",
            "binary_name": "libvncserver0-dbgsym"
        },
        {
            "binary_version": "0.9.9+dfsg-1ubuntu1.4",
            "binary_name": "linuxvnc"
        },
        {
            "binary_version": "0.9.9+dfsg-1ubuntu1.4",
            "binary_name": "linuxvnc-dbgsym"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:Pro:14.04:LTS / tightvnc

Package

Name
tightvnc
Purl
pkg:deb/ubuntu/tightvnc@1.3.9-6.5+deb8u1build0.14.04.1~esm1?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.3.9-6.5+deb8u1build0.14.04.1~esm1

Affected versions

1.*

1.3.9-6.4
1.3.9-6.4ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.3.9-6.5+deb8u1build0.14.04.1~esm1",
            "binary_name": "tightvncserver"
        },
        {
            "binary_version": "1.3.9-6.5+deb8u1build0.14.04.1~esm1",
            "binary_name": "tightvncserver-dbgsym"
        },
        {
            "binary_version": "1.3.9-6.5+deb8u1build0.14.04.1~esm1",
            "binary_name": "xtightvncviewer"
        },
        {
            "binary_version": "1.3.9-6.5+deb8u1build0.14.04.1~esm1",
            "binary_name": "xtightvncviewer-dbgsym"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:16.04:LTS / italc

Package

Name
italc
Purl
pkg:deb/ubuntu/italc@1:2.0.2+dfsg1-4ubuntu0.1?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:2.0.2+dfsg1-4ubuntu0.1

Affected versions

1:2.*

1:2.0.2+dfsg1-3
1:2.0.2+dfsg1-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1",
            "binary_name": "italc-client"
        },
        {
            "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1",
            "binary_name": "italc-client-dbg"
        },
        {
            "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1",
            "binary_name": "italc-client-dbgsym"
        },
        {
            "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1",
            "binary_name": "italc-management-console"
        },
        {
            "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1",
            "binary_name": "italc-management-console-dbg"
        },
        {
            "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1",
            "binary_name": "italc-management-console-dbgsym"
        },
        {
            "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1",
            "binary_name": "italc-master"
        },
        {
            "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1",
            "binary_name": "italc-master-dbg"
        },
        {
            "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1",
            "binary_name": "italc-master-dbgsym"
        },
        {
            "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1",
            "binary_name": "libitalccore"
        },
        {
            "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1",
            "binary_name": "libitalccore-dbg"
        },
        {
            "binary_version": "1:2.0.2+dfsg1-4ubuntu0.1",
            "binary_name": "libitalccore-dbgsym"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:16.04:LTS / libvncserver

Package

Name
libvncserver
Purl
pkg:deb/ubuntu/libvncserver@0.9.10+dfsg-3ubuntu0.16.04.3?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.9.10+dfsg-3ubuntu0.16.04.3

Affected versions

0.*

0.9.10+dfsg-3
0.9.10+dfsg-3build1
0.9.10+dfsg-3ubuntu0.16.04.1
0.9.10+dfsg-3ubuntu0.16.04.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.3",
            "binary_name": "libvncclient1"
        },
        {
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.3",
            "binary_name": "libvncclient1-dbg"
        },
        {
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.3",
            "binary_name": "libvncclient1-dbgsym"
        },
        {
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.3",
            "binary_name": "libvncserver-config"
        },
        {
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.3",
            "binary_name": "libvncserver-config-dbgsym"
        },
        {
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.3",
            "binary_name": "libvncserver-dev"
        },
        {
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.3",
            "binary_name": "libvncserver-dev-dbgsym"
        },
        {
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.3",
            "binary_name": "libvncserver1"
        },
        {
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.3",
            "binary_name": "libvncserver1-dbg"
        },
        {
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.3",
            "binary_name": "libvncserver1-dbgsym"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:Pro:16.04:LTS / tightvnc

Package

Name
tightvnc
Purl
pkg:deb/ubuntu/tightvnc@1.3.10-0ubuntu3?arch=source&distro=esm-apps/xenial

Affected ranges

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

Affected versions

1.*

1.3.10-0ubuntu2
1.3.10-0ubuntu3

Ubuntu:18.04:LTS / italc

Package

Name
italc
Purl
pkg:deb/ubuntu/italc@1:3.0.3+dfsg1-3ubuntu0.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:3.0.3+dfsg1-3ubuntu0.1

Affected versions

1:3.*

1:3.0.3+dfsg1-1
1:3.0.3+dfsg1-2
1:3.0.3+dfsg1-2build1
1:3.0.3+dfsg1-2ubuntu1
1:3.0.3+dfsg1-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:3.0.3+dfsg1-3ubuntu0.1",
            "binary_name": "italc-client"
        },
        {
            "binary_version": "1:3.0.3+dfsg1-3ubuntu0.1",
            "binary_name": "italc-client-dbgsym"
        },
        {
            "binary_version": "1:3.0.3+dfsg1-3ubuntu0.1",
            "binary_name": "italc-management-console"
        },
        {
            "binary_version": "1:3.0.3+dfsg1-3ubuntu0.1",
            "binary_name": "italc-management-console-dbgsym"
        },
        {
            "binary_version": "1:3.0.3+dfsg1-3ubuntu0.1",
            "binary_name": "italc-master"
        },
        {
            "binary_version": "1:3.0.3+dfsg1-3ubuntu0.1",
            "binary_name": "italc-master-dbgsym"
        },
        {
            "binary_version": "1:3.0.3+dfsg1-3ubuntu0.1",
            "binary_name": "libitalccore"
        },
        {
            "binary_version": "1:3.0.3+dfsg1-3ubuntu0.1",
            "binary_name": "libitalccore-dbgsym"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / libvncserver

Package

Name
libvncserver
Purl
pkg:deb/ubuntu/libvncserver@0.9.11+dfsg-1ubuntu1.1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.9.11+dfsg-1ubuntu1.1

Affected versions

0.*

0.9.11+dfsg-1
0.9.11+dfsg-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.9.11+dfsg-1ubuntu1.1",
            "binary_name": "libvncclient1"
        },
        {
            "binary_version": "0.9.11+dfsg-1ubuntu1.1",
            "binary_name": "libvncclient1-dbg"
        },
        {
            "binary_version": "0.9.11+dfsg-1ubuntu1.1",
            "binary_name": "libvncserver-config"
        },
        {
            "binary_version": "0.9.11+dfsg-1ubuntu1.1",
            "binary_name": "libvncserver-dev"
        },
        {
            "binary_version": "0.9.11+dfsg-1ubuntu1.1",
            "binary_name": "libvncserver1"
        },
        {
            "binary_version": "0.9.11+dfsg-1ubuntu1.1",
            "binary_name": "libvncserver1-dbg"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:Pro:18.04:LTS / ssvnc

Package

Name
ssvnc
Purl
pkg:deb/ubuntu/ssvnc@1.0.29-3build1?arch=source&distro=esm-apps/bionic

Affected ranges

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

Affected versions

1.*

1.0.29-3
1.0.29-3build1

Ubuntu:Pro:18.04:LTS / tightvnc

Package

Name
tightvnc
Purl
pkg:deb/ubuntu/tightvnc@1.3.10-0ubuntu4?arch=source&distro=esm-apps/bionic

Affected ranges

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

Affected versions

1.*

1.3.10-0ubuntu3
1.3.10-0ubuntu4

Ubuntu:20.04:LTS / ssvnc

Package

Name
ssvnc
Purl
pkg:deb/ubuntu/ssvnc@1.0.29-5?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.29-5

Affected versions

1.*

1.0.29-4build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.0.29-5",
            "binary_name": "ssvnc"
        },
        {
            "binary_version": "1.0.29-5",
            "binary_name": "ssvnc-dbgsym"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:Pro:20.04:LTS / tightvnc

Package

Name
tightvnc
Purl
pkg:deb/ubuntu/tightvnc@1.3.10-0ubuntu5?arch=source&distro=esm-apps/focal

Affected ranges

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

Affected versions

1.*

1.3.10-0ubuntu5

Ubuntu:22.04:LTS / ssvnc

Package

Name
ssvnc
Purl
pkg:deb/ubuntu/ssvnc@1.0.29-5?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.29-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.0.29-5",
            "binary_name": "ssvnc"
        },
        {
            "binary_version": "1.0.29-5",
            "binary_name": "ssvnc-dbgsym"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:22.04:LTS / tightvnc

Package

Name
tightvnc
Purl
pkg:deb/ubuntu/tightvnc@1:1.3.10-5?arch=source&distro=jammy

Affected ranges

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

Affected versions

1:1.*

1:1.3.10-3
1:1.3.10-5

Ubuntu:24.04:LTS / tightvnc

Package

Name
tightvnc
Purl
pkg:deb/ubuntu/tightvnc@1:1.3.10-8?arch=source&distro=noble

Affected ranges

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

Affected versions

1:1.*

1:1.3.10-7
1:1.3.10-7build1
1:1.3.10-7build2
1:1.3.10-8

Ubuntu:25.04 / tightvnc

Package

Name
tightvnc
Purl
pkg:deb/ubuntu/tightvnc@1:1.3.10-9?arch=source&distro=plucky

Affected ranges

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

Affected versions

1:1.*

1:1.3.10-9