#VU57130 Heap-based buffer overflow in Google Chromium - CVE-2021-37979

Vulnerability identifier: #VU57130

Vulnerability risk: High

CVSSv4.0: 7.3 [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:P/U:Amber]

CVE-ID: CVE-2021-37979

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Google Chromium
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 WebRTC. 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 94.0.4606.81.

Vulnerable software versions

Google Chromium: 94.0.4606.0 - 94.0.4606.71

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External links
https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop.html
https://crbug.com/1247260
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-37979

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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. However, proof of concept for this vulnerability is available.