UBUNTU-CVE-2020-16125

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Source
https://ubuntu.com/security/CVE-2020-16125
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-16125.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2020-16125
Upstream
Downstream
Related
Published
2020-11-03T00:00:00Z
Modified
2025-10-24T04:48:38Z
Severity
  • 7.2 (High) CVSS_V3 - CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H CVSS Calculator
  • 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

gdm3 versions before 3.36.2 or 3.38.2 would start gnome-initial-setup if gdm3 can't contact the accountservice service via dbus in a timely manner; on Ubuntu (and potentially derivatives) this could be be chained with an additional issue that could allow a local user to create a new privileged account.

References

Affected packages

Ubuntu:16.04:LTS / gdm3

Package

Name
gdm3
Purl
pkg:deb/ubuntu/gdm3@3.18.3-0ubuntu2.2?arch=source&distro=xenial

Affected ranges

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

Affected versions

3.*

3.18.0-2ubuntu1
3.18.0-2ubuntu2
3.18.0-2ubuntu3
3.18.0-2ubuntu4
3.18.2-1ubuntu1
3.18.2-1ubuntu2
3.18.3-0ubuntu1
3.18.3-0ubuntu2
3.18.3-0ubuntu2.1
3.18.3-0ubuntu2.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.18.3-0ubuntu2.2",
            "binary_name": "gdm"
        },
        {
            "binary_version": "3.18.3-0ubuntu2.2",
            "binary_name": "gdm3"
        },
        {
            "binary_version": "3.18.3-0ubuntu2.2",
            "binary_name": "gir1.2-gdm-1.0"
        },
        {
            "binary_version": "3.18.3-0ubuntu2.2",
            "binary_name": "libgdm-dev"
        },
        {
            "binary_version": "3.18.3-0ubuntu2.2",
            "binary_name": "libgdm1"
        }
    ]
}

Ubuntu:18.04:LTS / gdm3

Package

Name
gdm3
Purl
pkg:deb/ubuntu/gdm3@3.28.3-0ubuntu18.04.6?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.28.3-0ubuntu18.04.6

Affected versions

3.*

3.26.1-3ubuntu2
3.26.1-3ubuntu3
3.26.2.1-0ubuntu1
3.26.2.1-2ubuntu1
3.26.2.1-2ubuntu2
3.27.90-0ubuntu1
3.27.92-0ubuntu1
3.28.0-0ubuntu1
3.28.2-0ubuntu1.2
3.28.2-0ubuntu1.3
3.28.2-0ubuntu1.4
3.28.3-0ubuntu18.04.1
3.28.3-0ubuntu18.04.3
3.28.3-0ubuntu18.04.4

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "3.28.3-0ubuntu18.04.6",
            "binary_name": "gdm3"
        },
        {
            "binary_version": "3.28.3-0ubuntu18.04.6",
            "binary_name": "gir1.2-gdm-1.0"
        },
        {
            "binary_version": "3.28.3-0ubuntu18.04.6",
            "binary_name": "libgdm-dev"
        },
        {
            "binary_version": "3.28.3-0ubuntu18.04.6",
            "binary_name": "libgdm1"
        }
    ]
}

Ubuntu:20.04:LTS / gdm3

Package

Name
gdm3
Purl
pkg:deb/ubuntu/gdm3@3.36.3-0ubuntu0.20.04.2?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.36.3-0ubuntu0.20.04.2

Affected versions

3.*

3.34.1-1ubuntu1
3.36.3-0ubuntu0.20.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "3.36.3-0ubuntu0.20.04.2",
            "binary_name": "gdm3"
        },
        {
            "binary_version": "3.36.3-0ubuntu0.20.04.2",
            "binary_name": "gir1.2-gdm-1.0"
        },
        {
            "binary_version": "3.36.3-0ubuntu0.20.04.2",
            "binary_name": "libgdm-dev"
        },
        {
            "binary_version": "3.36.3-0ubuntu0.20.04.2",
            "binary_name": "libgdm1"
        }
    ]
}