Light Display Manager (aka LightDM) 1.4.x before 1.4.3, 1.6.x before 1.6.2, and 1.7.x…
Priority LOW 11CWE-264Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Partial · None · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-264.
Summary
Light Display Manager (aka LightDM) 1.4.x before 1.4.3, 1.6.x before 1.6.2, and 1.7.x before 1.7.14 uses 0664 permissions for the temporary .Xauthority file, which allows local users to obtain sensitive information by reading the file.
Why it matters now
EPSS 0.00368 30th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 19
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:robert_ancell:lightdm:1.4.0:*:*:*:*:*:*:* | 1.4.0 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.4.1:*:*:*:*:*:*:* | 1.4.1 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.4.2:*:*:*:*:*:*:* | 1.4.2 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.6.0:*:*:*:*:*:*:* | 1.6.0 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.6.1:*:*:*:*:*:*:* | 1.6.1 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.7.0:*:*:*:*:*:*:* | 1.7.0 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.7.1:*:*:*:*:*:*:* | 1.7.1 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.7.2:*:*:*:*:*:*:* | 1.7.2 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.7.3:*:*:*:*:*:*:* | 1.7.3 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.7.4:*:*:*:*:*:*:* | 1.7.4 | Vulnerable | Robert Ancell |
- cpe:2.3:a:robert_ancell:lightdm:1.4.0:*:*:*:*:*:*:* Versions 1.4.0 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.4.1:*:*:*:*:*:*:* Versions 1.4.1 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.4.2:*:*:*:*:*:*:* Versions 1.4.2 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.6.0:*:*:*:*:*:*:* Versions 1.6.0 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.6.1:*:*:*:*:*:*:* Versions 1.6.1 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.7.0:*:*:*:*:*:*:* Versions 1.7.0 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.7.1:*:*:*:*:*:*:* Versions 1.7.1 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.7.2:*:*:*:*:*:*:* Versions 1.7.2 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.7.3:*:*:*:*:*:*:* Versions 1.7.3 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.7.4:*:*:*:*:*:*:* Versions 1.7.4 Vulnerable ·Robert Ancell
Show 9 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:robert_ancell:lightdm:1.7.5:*:*:*:*:*:*:* | 1.7.5 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.7.6:*:*:*:*:*:*:* | 1.7.6 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.7.7:*:*:*:*:*:*:* | 1.7.7 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.7.8:*:*:*:*:*:*:* | 1.7.8 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.7.9:*:*:*:*:*:*:* | 1.7.9 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.7.10:*:*:*:*:*:*:* | 1.7.10 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.7.11:*:*:*:*:*:*:* | 1.7.11 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.7.12:*:*:*:*:*:*:* | 1.7.12 | Vulnerable | Robert Ancell |
| cpe:2.3:a:robert_ancell:lightdm:1.7.13:*:*:*:*:*:*:* | 1.7.13 | Vulnerable | Robert Ancell |
- cpe:2.3:a:robert_ancell:lightdm:1.7.5:*:*:*:*:*:*:* Versions 1.7.5 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.7.6:*:*:*:*:*:*:* Versions 1.7.6 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.7.7:*:*:*:*:*:*:* Versions 1.7.7 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.7.8:*:*:*:*:*:*:* Versions 1.7.8 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.7.9:*:*:*:*:*:*:* Versions 1.7.9 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.7.10:*:*:*:*:*:*:* Versions 1.7.10 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.7.11:*:*:*:*:*:*:* Versions 1.7.11 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.7.12:*:*:*:*:*:*:* Versions 1.7.12 Vulnerable ·Robert Ancell
- cpe:2.3:a:robert_ancell:lightdm:1.7.13:*:*:*:*:*:*:* Versions 1.7.13 Vulnerable ·Robert Ancell
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2013-4331
- 2026-10-03 Alias added: GHSA-p375-56p4-h24r
References
More Robert Ancell Lightdm vulnerabilities
- TI-2012-01017 lightdm before 1.0.9 does not properly close file descriptors before opening a child… CVSS 2.0MEDIUM 4.6
- TI-2013-03909 LightDM 1.7.5 through 1.8.3 and 1.9.x before 1.9.2 does not apply the AppArmor profile to… CVSS 2.0LOW 3.3
- TI-2012-00867 debian/guest-account in Light Display Manager (lightdm) 1.0.x before 1.0.6 and 1.1.x… CVSS 2.0LOW 2.1
- TI-2011-03623 LightDM before 1.0.6 allows local users to change ownership of arbitrary files via a symlink attack on ~/.Xauthority. CVSS 2.0LOW 1.9
- TI-2011-02783 dmrc.c in Light Display Manager (aka LightDM) before 1.1.1 allows local users to read… CVSS 2.0LOW 1.9
Sources
- CVE-2013-4331 · CVE Program
- CVE-2013-4331 · NVD
- FIRST EPSS
- GHSA-p375-56p4-h24r · GitHub Advisory Database · CC BY 4.0
- CVE-2013-4331 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences