Zero-day vulnerability in Google Chrome

Improper control of a resource through its lifetime
CVE-2021-21166

Vulnerability details

Advisory: SB2021030223 - Multiple vulnerabilities in Google Chrome

Vulnerable component: Google Chrome

CVE-ID: CVE-2021-21166

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: -

Description:

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to improper control of object lifetime in audio in Google Chrome. A remote attacker can trick the victim to visit a specially crafted webpage, trigger a stack-based buffer overflow and execute arbitrary code on the system.

Note, the vulnerability is being actively exploited in the wild.

External links:

https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html


About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.