Heap-based buffer overflow in Google Chrome - CVE-2021-21148

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the V8 engine in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

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

How to mitigate CVE-2021-21148

Sources

• https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_4.html
• https://crbug.com/1170176