Race condition in screen-resolution-extra (Ubuntu package) - CVE-2018-8885
Published: April 4, 2018
Vulnerability identifier: #VU11502
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-8885
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Canonical Ltd.
Affected software:
screen-resolution-extra (Ubuntu package)
screen-resolution-extra (Ubuntu package)
Detailed vulnerability description
The vulnerability allows a local attacker to bypass security restrictions on the target system.
The weakness exists in screenresolution-mechanism due to improper use of the PolicyKit D-Bus API. A local attacker can trigger race condition via a setuid or pkexec process that is mishandled in a PolicyKitService._check_permission call and bypass security restrictions.
The weakness exists in screenresolution-mechanism due to improper use of the PolicyKit D-Bus API. A local attacker can trigger race condition via a setuid or pkexec process that is mishandled in a PolicyKitService._check_permission call and bypass security restrictions.
How to mitigate CVE-2018-8885
Install update from vendor's website.