CVE-2017-7358 Information

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.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Reference

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/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.3