LightDM CVE-2017-8900 Local Security Bypass Vulnerability

Bugtraq ID:	98554
Class:	Design Error
CVE:	CVE-2017-8900
Remote:	No
Local:	Yes
Published:	Feb 09 2017 12:00AM
Updated:	May 23 2017 04:27PM
Credit:	Tyler Hicks
Vulnerable:	Ubuntu Ubuntu Linux 17.04 Ubuntu Ubuntu Linux 16.10 freedesktop.org LightDM 1.17.2 freedesktop.org LightDM 1.16.6 freedesktop.org LightDM 1.16.5 freedesktop.org LightDM 1.16.4 freedesktop.org LightDM 1.16.3 freedesktop.org LightDM 1.16.2 freedesktop.org LightDM 1.16.1 freedesktop.org LightDM 1.16 freedesktop.org LightDM 1.14.4 freedesktop.org LightDM 1.14.3 freedesktop.org LightDM 1.14.2 freedesktop.org LightDM 1.14.1 freedesktop.org LightDM 1.14 freedesktop.org LightDM 1.8.4 freedesktop.org LightDM 1.8 freedesktop.org LightDM 1.7.14 freedesktop.org LightDM 1.7.13 freedesktop.org LightDM 1.6.2 freedesktop.org LightDM 1.6.1 freedesktop.org LightDM 1.4.3 freedesktop.org LightDM 1.4.2 freedesktop.org LightDM 1.22.0 freedesktop.org LightDM 1.0.6 freedesktop.org LightDM 1.0.5 freedesktop.org LightDM 1.0.4
Not Vulnerable:

LightDM CVE-2017-8900 Local Security Bypass Vulnerability

LightDM is prone to a local security-bypass vulnerability.

An attacker with physical access to the system can exploit this issue to bypass certain security restrictions and perform unauthorized actions. Successful exploits may lead to other attacks.

LightDM 1.22.0 and prior versions are vulnerable.

LightDM CVE-2017-8900 Local Security Bypass Vulnerability

Currently, we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

LightDM CVE-2017-8900 Local Security Bypass Vulnerability

References:

• Guest session processes are not confined in 16.10 and newer releases (Ubuntu)
  
• Light Display Manager (LightDM) Homepage (Freedesktop.org)