#VU42559 Out-of-bounds read in Google Chrome - CVE-2020-6555

Vulnerability identifier: #VU42559

Vulnerability risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2020-6555

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: Yes

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

Vendor: Google

Description

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

The vulnerability exists due to a boundary condition within the WebGL component in Google Chrome. A remote attacker can trick the victim into visiting a specially crafted web page, trigger an out-of-bounds read error and gain access to sensitive information.

Mitigation
Update to version 84.0.4147.125.

Vulnerable software versions

Google Chrome: 81.0.4044.113 - 84.0.4147.105

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External links
https://chromereleases.googleblog.com/2020/08/stable-channel-update-for-desktop.html
https://crbug.com/1105202

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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.