UBUNTU-CVE-2018-14345

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Source
https://ubuntu.com/security/CVE-2018-14345
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-14345.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-14345
Upstream
Published
2018-07-17T14:29:00Z
Modified
2025-10-24T04:47:08Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An issue was discovered in SDDM through 0.17.0. If configured with ReuseSession=true, the password is not checked for users with an already existing session. Any user with access to the system D-Bus can therefore unlock any graphical session. This is related to daemon/Display.cpp and helper/backend/PamBackend.cpp.

References

Affected packages

Ubuntu:16.04:LTS / sddm

Package

Name
sddm
Purl
pkg:deb/ubuntu/sddm@0.13.0-1ubuntu5?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*

0.11.0-0ubuntu11
0.11.0-0ubuntu12
0.13.0-1ubuntu1
0.13.0-1ubuntu3
0.13.0-1ubuntu4
0.13.0-1ubuntu5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.13.0-1ubuntu5",
            "binary_name": "sddm"
        },
        {
            "binary_version": "0.13.0-1ubuntu5",
            "binary_name": "sddm-theme-circles"
        },
        {
            "binary_version": "0.13.0-1ubuntu5",
            "binary_name": "sddm-theme-elarun"
        },
        {
            "binary_version": "0.13.0-1ubuntu5",
            "binary_name": "sddm-theme-maldives"
        },
        {
            "binary_version": "0.13.0-1ubuntu5",
            "binary_name": "sddm-theme-maui"
        }
    ]
}

Ubuntu:18.04:LTS / sddm

Package

Name
sddm
Purl
pkg:deb/ubuntu/sddm@0.17.0-1ubuntu7?arch=source&distro=bionic

Affected ranges

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

Affected versions

0.*

0.14.0-4ubuntu1
0.14.0-4ubuntu2
0.17.0-1ubuntu1
0.17.0-1ubuntu2
0.17.0-1ubuntu3
0.17.0-1ubuntu4
0.17.0-1ubuntu5
0.17.0-1ubuntu6
0.17.0-1ubuntu7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.17.0-1ubuntu7",
            "binary_name": "sddm"
        },
        {
            "binary_version": "0.17.0-1ubuntu7",
            "binary_name": "sddm-theme-debian-elarun"
        },
        {
            "binary_version": "0.17.0-1ubuntu7",
            "binary_name": "sddm-theme-debian-maui"
        },
        {
            "binary_version": "0.17.0-1ubuntu7",
            "binary_name": "sddm-theme-elarun"
        },
        {
            "binary_version": "0.17.0-1ubuntu7",
            "binary_name": "sddm-theme-maldives"
        },
        {
            "binary_version": "0.17.0-1ubuntu7",
            "binary_name": "sddm-theme-maui"
        },
        {
            "binary_version": "0.17.0-1ubuntu7",
            "binary_name": "sddm-theme-maya"
        }
    ]
}