In LightDM through 1.22.0, a directory traversal issue in debian/guest-account.sh allows…
Priority LOW 37CWE-22Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
In LightDM through 1.22.0, a directory traversal issue in debian/guest-account.sh allows local attackers to own arbitrary directory path locations and escalate privileges to root when the guest user logs out.
Why it matters now
EPSS 0.02669 85th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
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 · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:lightdm_project:lightdm:*:*:*:*:*:*:*:* | up to 1.22.0 | Vulnerable | Lightdm Project |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:16.10:*:*:*:*:*:*:* | 16.10 | Vulnerable | Canonical |
- cpe:2.3:a:lightdm_project:lightdm:*:*:*:*:*:*:*:* Versions up to 1.22.0 Vulnerable ·Lightdm Project
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:16.10:*:*:*:*:*:*:* Versions 16.10 Vulnerable ·Canonical
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-7358
- 2026-10-03 Alias added: GHSA-487j-vfqw-h49x
References
Sources
- CVE-2017-7358 · CVE Program
- CVE-2017-7358 · NVD
- FIRST EPSS
- GHSA-487j-vfqw-h49x · GitHub Advisory Database · CC BY 4.0
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