Google addresses a new Chrome zero-day flaw actively exploited in the wild

September 14, 2021  By Pierluigi Paganini


Google Chrome 93.0.4577.82 for Windows, Mac, and Linux that addressed eleven security issues, including two zero-days actively exploited.

Google released Chrome 93.0.4577.82 for Windows, Mac, and Linux that fixed eleven security issues, including two zero-days vulnerabilities actively exploited in the wild.

This is the tenth zero-day vulnerability in Chrome fixed by Google that was exploited in attacks in the wild.

Below is the list of the other nine zero-day vulnerabilities addressed in Chrome in 2021:

Both zero-day vulnerabilities fixed in Chrome 93.0.4577.82 were disclosed to Google on September 8th, 2021. The first issue, tracked as CVE-2021-30632 is an out-of-bounds write that resides in the V8 JavaScript engine, while the CVE-2021-30633 flws is a use-after-free vulnerability that impacts the Indexed DB API. 

“Google is aware that exploits for CVE-2021-30632 and CVE-2021-30633 exist in the wild,” reads the release note published by the company.

Google did not provide details about the attacks either information about the threat actors exploiting the vulnerabilities. The two vulnerabilities were reported by anonymous researchers.

The two zero-day flaws could be exploited to trigger a DoS condition and under specific circumstances they can allow attackers to escape the sandbox, perform remote code execution, and carry out other malicious activities.

The full list of bugs addressed with the latest release is:

  • [$7500][1237533] High CVE-2021-30625: Use after free in Selection API. Reported by Marcin Towalski of Cisco Talos on 2021-08-06
  • [$7500][1241036] High CVE-2021-30626: Out of bounds memory access in ANGLE. Reported by Jeonghoon Shin of Theori on 2021-08-18
  • [$5000][1245786] High CVE-2021-30627: Type Confusion in Blink layout. Reported by Aki Helin of OUSPG on 2021-09-01
  • [$TBD][1241123] High CVE-2021-30628: Stack buffer overflow in ANGLE. Reported by Jaehun Jeong(@n3sk) of Theori on 2021-08-18
  • [$TBD][1243646] High CVE-2021-30629: Use after free in Permissions. Reported by Weipeng Jiang (@Krace) from Codesafe Team of Legendsec at Qi’anxin Group on 2021-08-26
  • [$TBD][1244568] High CVE-2021-30630: Inappropriate implementation in Blink . Reported by SorryMybad (@S0rryMybad) of Kunlun Lab on 2021-08-30
  • [$TBD][1246932] High CVE-2021-30631: Type Confusion in Blink layout. Reported by Atte Kettunen of OUSPG on 2021-09-06
  • [$TBD][1247763] High CVE-2021-30632: Out of bounds write in V8. Reported by Anonymous on 2021-09-08
  • [$TBD][1247766] High CVE-2021-30633: Use after free in Indexed DB API. Reported by Anonymous on 2021-09-08

Google urges its users to update their Google Chrome installs to the latest version immediately.

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Pierluigi Paganini

(SecurityAffairs – hacking, Google)

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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”.





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