Google Chrome Could Allow for Arbitrary Code Execution

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Fortify Security Team

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Mar 4, 2021

Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could allow for arbitrary code execution. Google Chrome is a web browser used to access the Internet. Successful exploitation of the most severe of these vulnerabilities could allow an attacker to execute arbitrary code in the context of the browser. Depending on the privileges associated with the application, an attacker could view, change, or delete data. If this application has been configured to have fewer user rights on the system, exploitation of the most severe of these vulnerabilities could have less impact than if it was configured with administrative rights.

THREAT INTELLIGENCE: There are currently no reports of these vulnerabilities being exploited in the wild.

SYSTEMS AFFECTED:

Google Chrome versions prior to 89.0.4389.72

RISK:
Government:

Large and medium government entities: High
Small government entities: Medium

Businesses:

Large and medium business entities: High
Small business entities: Medium

Home users: Low

TECHNICAL SUMMARY:

Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could allow for arbitrary code execution. These vulnerabilities can be exploited if a user visits, or is redirected to, a specially crafted web page. Details of the vulnerabilities are as follows:

Heap buffer overflow in OpenJPEG. [CVE-2020-27844]
Heap buffer overflow in TabStrip. [CVE-2021-21159]
Heap buffer overflow in WebAudio. [CVE-2021-21160]
Heap buffer overflow in TabStrip. [CVE-2021-21161]
Use after free in WebRTC. [CVE-2021-21162]
Insufficient data validation in Reader Mode. [CVE-2021-21163]
Insufficient data validation in Chrome for iOS. [CVE-2021-21164]
Object lifecycle issue in audio. [CVE-2021-21165]
Object lifecycle issue in audio. [CVE-2021-21166]
Use after free in bookmarks. [CVE-2021-21167]
Insufficient policy enforcement in appcache. [CVE-2021-21168]
Out of bounds memory access in V8. [CVE-2021-21169]
Incorrect security UI in Loader. [CVE-2021-21170]
Incorrect security UI in TabStrip and Navigation. [CVE-2021-21171]
Insufficient policy enforcement in File System API. [CVE-2021-21172]
Side-channel information leakage in Network Internals. [CVE-2021-21173]
Inappropriate implementation in Referrer. [CVE-2021-21174]
Inappropriate implementation in Site isolation. [CVE-2021-21175]
Inappropriate implementation in full screen mode. [CVE-2021-21176]
Insufficient policy enforcement in Autofill. [CVE-2021-21177]
Inappropriate implementation in Compositing. [CVE-2021-21178]
Use after free in Network Internals. [CVE-2021-21179]
Use after free in tab search. [CVE-2021-21180]
Side-channel information leakage in autofill. [CVE-2021-21181]
Insufficient policy enforcement in navigations. [CVE-2021-21182]
Inappropriate implementation in performance APIs. [CVE-2021-21183]
Inappropriate implementation in performance APIs. [CVE-2021-21184]
Insufficient policy enforcement in extensions. [CVE-2021-21185]
Insufficient policy enforcement in QR scanning. [CVE-2021-21186]
Insufficient data validation in URL formatting. [CVE-2021-21187]
Use after free in Blink. [CVE-2021-21188]
Insufficient policy enforcement in payments [CVE-2021-21189]
Uninitialized Use in PDFium. [CVE-2021-21190]

Successful exploitation of the most severe of these vulnerabilities could allow an attacker to execute arbitrary code in the context of the browser. Depending on the privileges associated with the application, an attacker could view, change, or delete data. If this application has been configured to have fewer user rights on the system, exploitation of the most severe of these vulnerabilities could have less impact than if it was configured with administrative rights.

RECOMMENDATIONS:

We recommend the following actions be taken:

Apply the stable channel update provided by Google to vulnerable systems immediately after appropriate testing.
Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.
Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from un-trusted sources.
Apply the Principle of Least Privilege to all systems and services.

REFERENCES:
Google:
https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html

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