CVE-2017-7358 EXPLOIT
7.3
HIGH · CVSS 3.0 · EPSS 2.7% (pctl 85)
Patch early
A public exploit exists.
Description
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.
Scoring
| CVSS | 7.3 (HIGH, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 2.67% — more likely to be exploited than 85% of all CVEs |
| Weakness | CWE-22 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2017-04-05 |
| Last modified | 2026-06-17 |
Affected (2)
| Vendor | Product |
|---|---|
| canonical | ubuntu linux |
| lightdm project | lightdm |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | LightDM (Ubuntu 16.04/16.10) - 'Guest Account' Local Privilege Escalation | 2017-04-25 |
References
- http://bazaar.launchpad.net/~lightdm-team/lightdm/trunk/revision/2478
- http://www.securityfocus.com/bid/97486
- https://launchpad.net/bugs/1677924
- https://lists.freedesktop.org/archives/lightdm/2017-April/001059.html
- https://www.exploit-db.com/exploits/41923/
- https://www.ubuntu.com/usn/usn-3255-1/
- http://bazaar.launchpad.net/~lightdm-team/lightdm/trunk/revision/2478
- http://www.securityfocus.com/bid/97486
- https://launchpad.net/bugs/1677924
- https://lists.freedesktop.org/archives/lightdm/2017-April/001059.html
- https://www.exploit-db.com/exploits/41923/
- https://www.ubuntu.com/usn/usn-3255-1/
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