Related Vulnerabilities: CVE-2019-18634  

A flaw was found in the Sudo before version 1.8.31 application when the ’pwfeedback' option is set to true on the sudoers file. An authenticated user can use this vulnerability to trigger a stack-based buffer overflow under certain conditions even without Sudo privileges. The buffer overflow may allow an attacker to expose or corrupt memory information, crash the Sudo application, or possibly inject code to be run as a root user.

Severity High

Remote No

Type Privilege escalation

Description

A flaw was found in the Sudo before version 1.8.31 application when the ’pwfeedback' option is set to true on the sudoers file. An authenticated user can use this vulnerability to trigger a stack-based buffer overflow under certain conditions even without Sudo privileges. The buffer overflow may allow an attacker to expose or corrupt memory information, crash the Sudo application, or possibly inject code to be run as a root user.

AVG-1093 sudo 1.8.30-1 1.8.31-1 High Fixed

06 Feb 2020 ASA-202002-2 AVG-1093 sudo High privilege escalation

https://www.sudo.ws/alerts/pwfeedback.html
https://www.sudo.ws/repos/sudo/rev/84640592b0ff