Remote code execution in Google Chrome

1) Heap-based buffer overflow

EUVDB-ID: #VU50372

Risk: Critical

CVSSv3.1: 8.4 [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]

CVE-ID: CVE-2021-21148

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Google Chrome: 86.0.4240.111 - 88.0.4324.146

CPE2.3

• cpe:2.3:a:google:google_chrome:88.0.4324.146:*:*:*:*:*:*:*
• cpe:2.3:a:google:google_chrome:88.0.4324.104:*:*:*:*:*:*:*
• cpe:2.3:a:google:google_chrome:88.0.4324.96:*:*:*:*:*:*:*

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.