Google addresses High-Severity sandbox escape issues in Chrome

Google has patched three serious flaws in Chrome that can be exploited to escape the sandbox of the popular web browser.

Google has addressed three serious vulnerabilities affecting its Chrome browser that can be exploited to escape the built-in sandbox.

The tech giant released Chrome 77 update in September that addressed two use-after-free vulnerabilities that could lead to sandbox escape. The two flaws have been reported by Man Yue Mo of the Semmle Security Research Team that was rewarded of $20,000 each.

This month Google released Chrome 78 along with a Chrome 77 update that address three other “high severity” vulnerabilities reported by the same researchers. Chrome 78 addressed a total of 37 vulnerabilities.

The vulnerabilities are a use-after-free issue in the audio component tracked as CVE-2019-13695, a use-after-free in the media component tracked as CVE-2019-13699, and a buffer overrun in the Blink browser engine tracked as CVE-2019-13700.

An attacker could exploit the vulnerabilities to execute arbitrary code inside the sandbox and potentially escape it, they could be chained with other flaws to compromise the target computer.

Google awarded the researchers with $15,000, $20,000 and $15,000, respectively.

Semmle donated the overall awards ($95,000) to an unnamed organization, let’s remember that Google doubles the amount of bug bounty if the researchers donate them to a registered charity.

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Pierluigi Paganini

(SecurityAffairs – iCloud, zero-day)

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Pierluigi Paganini

Pierluigi Paganini is member of the ENISA (European Union Agency for Network and Information Security) Threat Landscape Stakeholder Group and Cyber G7 Group, he is also a Security Evangelist, Security Analyst and Freelance Writer. Editor-in-Chief at "Cyber Defense Magazine", Pierluigi is a cyber security expert with over 20 years experience in the field, he is Certified Ethical Hacker at EC Council in London. The passion for writing and a strong belief that security is founded on sharing and awareness led Pierluigi to find the security blog "Security Affairs" recently named a Top National Security Resource for US. Pierluigi is a member of the "The Hacker News" team and he is a writer for some major publications in the field such as Cyber War Zone, ICTTF, Infosec Island, Infosec Institute, The Hacker News Magazine and for many other Security magazines. Author of the Books "The Deep Dark Web" and “Digital Virtual Currency and Bitcoin”.