UBUNTU-CVE-2019-20839

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Source

https://ubuntu.com/security/CVE-2019-20839

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-20839.json

JSON Data

https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2019-20839

Upstream

CVE-2019-20839

Downstream

USN-4434-1

Related

USN-4434-1

Published

2020-06-17T16:15:00Z

Modified

2025-07-18T16:45:36Z

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

libvncclient/sockets.c in LibVNCServer before 0.9.13 has a buffer overflow via a long socket filename.

References

Affected packages

Ubuntu:Pro:14.04:LTS / x11vnc

Package

Name: x11vnc
Purl: pkg:deb/ubuntu/x11vnc@0.9.13-1.1?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.9.13-1.1

Ubuntu:16.04:LTS / libvncserver

Package

Name: libvncserver
Purl: pkg:deb/ubuntu/libvncserver@0.9.10+dfsg-3ubuntu0.16.04.5?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.9.10+dfsg-3ubuntu0.16.04.5

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

0.9.10+dfsg-3ubuntu0.16.04.3

0.9.10+dfsg-3ubuntu0.16.04.4

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libvncclient1",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.5"
        },
        {
            "binary_name": "libvncclient1-dbg",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.5"
        },
        {
            "binary_name": "libvncclient1-dbgsym",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.5"
        },
        {
            "binary_name": "libvncserver-config",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.5"
        },
        {
            "binary_name": "libvncserver-config-dbgsym",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.5"
        },
        {
            "binary_name": "libvncserver-dev",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.5"
        },
        {
            "binary_name": "libvncserver-dev-dbgsym",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.5"
        },
        {
            "binary_name": "libvncserver1",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.5"
        },
        {
            "binary_name": "libvncserver1-dbg",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.5"
        },
        {
            "binary_name": "libvncserver1-dbgsym",
            "binary_version": "0.9.10+dfsg-3ubuntu0.16.04.5"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / libvncserver

Package

Name: libvncserver
Purl: pkg:deb/ubuntu/libvncserver@0.9.11+dfsg-1ubuntu1.3?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.9.11+dfsg-1ubuntu1.3

Affected versions

0.*

0.9.11+dfsg-1

0.9.11+dfsg-1ubuntu1

0.9.11+dfsg-1ubuntu1.1

0.9.11+dfsg-1ubuntu1.2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libvncclient1",
            "binary_version": "0.9.11+dfsg-1ubuntu1.3"
        },
        {
            "binary_name": "libvncclient1-dbg",
            "binary_version": "0.9.11+dfsg-1ubuntu1.3"
        },
        {
            "binary_name": "libvncserver-config",
            "binary_version": "0.9.11+dfsg-1ubuntu1.3"
        },
        {
            "binary_name": "libvncserver-dev",
            "binary_version": "0.9.11+dfsg-1ubuntu1.3"
        },
        {
            "binary_name": "libvncserver1",
            "binary_version": "0.9.11+dfsg-1ubuntu1.3"
        },
        {
            "binary_name": "libvncserver1-dbg",
            "binary_version": "0.9.11+dfsg-1ubuntu1.3"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / libvncserver

Package

Name: libvncserver
Purl: pkg:deb/ubuntu/libvncserver@0.9.12+dfsg-9ubuntu0.2?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.9.12+dfsg-9ubuntu0.2

Affected versions

0.*

0.9.11+dfsg-1.3

0.9.12+dfsg-3ubuntu3

0.9.12+dfsg-6

0.9.12+dfsg-7

0.9.12+dfsg-8

0.9.12+dfsg-9

0.9.12+dfsg-9ubuntu0.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libvncclient1",
            "binary_version": "0.9.12+dfsg-9ubuntu0.2"
        },
        {
            "binary_name": "libvncclient1-dbgsym",
            "binary_version": "0.9.12+dfsg-9ubuntu0.2"
        },
        {
            "binary_name": "libvncserver-dev",
            "binary_version": "0.9.12+dfsg-9ubuntu0.2"
        },
        {
            "binary_name": "libvncserver1",
            "binary_version": "0.9.12+dfsg-9ubuntu0.2"
        },
        {
            "binary_name": "libvncserver1-dbgsym",
            "binary_version": "0.9.12+dfsg-9ubuntu0.2"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:Pro:20.04:LTS / veyon

Package

Name: veyon
Purl: pkg:deb/ubuntu/veyon@4.3.1+repack1-2build2?arch=source&distro=esm-apps/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.2.4+repack1-2

4.2.5+repack1-1

4.3.1+repack1-1

4.3.1+repack1-2

4.3.1+repack1-2build1

4.3.1+repack1-2build2

Ubuntu:22.04:LTS / veyon

Package

Name: veyon
Purl: pkg:deb/ubuntu/veyon@4.5.3+repack1-1build2?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.5.3+repack1-1build1

4.5.3+repack1-1build2

Ubuntu:24.04:LTS / veyon

Package

Name: veyon
Purl: pkg:deb/ubuntu/veyon@4.7.5+repack1-1ubuntu5?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.7.5+repack1-1build2

4.7.5+repack1-1ubuntu1

4.7.5+repack1-1ubuntu3

4.7.5+repack1-1ubuntu4

4.7.5+repack1-1ubuntu5

Ubuntu:25.04 / veyon

Package

Name: veyon
Purl: pkg:deb/ubuntu/veyon@4.7.5+repack1-1ubuntu6?arch=source&distro=plucky

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.7.5+repack1-1ubuntu6