#VU24810 Stack-based buffer overflow in Sudo - CVE-2019-18634
Published: January 31, 2020 / Updated: August 1, 2021
Vulnerability identifier: #VU24810
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2019-18634
CWE-ID: CWE-121
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vulnerable software:
Sudo
Sudo
Software vendor:
Sudo
Sudo
Description
The vulnerability allows a local user to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the getln() function in tgetpass.c, if pwfeedback is enabled in /etc/sudoers. A local user can trigger stack-based buffer overflow and execute arbitrary code on the target system with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.