#VU56785 Improperly implemented security check for standard in Google Chromium - CVE-2021-37968

Vulnerability identifier: #VU56785

Vulnerability risk: High

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-37968

CWE-ID: CWE-358

Exploitation vector: Network

Exploit availability: No

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

Vendor: Google

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to incorrect implementation in Background Fetch API in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and gain access to sensitive information.

Mitigation
Update to version 94.0.4606.54.

Vulnerable software versions

Google Chromium: 94.0.4606.0 - 94.0.4606.12

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External links
https://chromereleases.googleblog.com/2021/09/stable-channel-update-for-desktop_21.html
https://crbug.com/1245053
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-37968

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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.