#VU55874 Race condition in Google Chrome - CVE-2021-30603

Vulnerability identifier: #VU55874

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-2021-30603

CWE-ID: CWE-362

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 the affected system.

The vulnerability exists due to a race condition in WebAudio. A remote attacker can trick the victim to visit a specially crafted webpage and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Google Chrome: 90.0.4430.72 - 92.0.4515.131

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External links
https://chromereleases.googleblog.com/2021/08/stable-channel-update-for-desktop.html
https://bugs.chromium.org/p/chromium/issues/detail?id=1233564
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-30603

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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.