#VU50751 Heap-based buffer overflow in Google Chrome - CVE-2021-21155

Vulnerability identifier: #VU50751

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-21155

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Google Chrome
Client/Desktop applications / Web browsers

Vendor: Google

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted HTML content in Tab Strip . A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Mitigation
Update to version 88.0.4324.182.

Vulnerable software versions

Google Chrome: 86.0.4240.183 - 88.0.4324.150

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External links
http://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_16.html
http://crbug.com/1175500

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.