Google Warns 2 Billion Chrome Users
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This year Chrome users have been worst affected by the number of attacks and yet again Google warns 2 billion Chrome users of another serious security issue. 

Google in a blog post mentioned the zero-day vulnerabilities, this being the sixteenth zero-day attack of the year.  Hackers have managed to exploit the flaw before Google released a fix for it. 

The current zero-day vulnerability is dangerous as it affects Windows, Mac, and Linux users. Google revealed the four high threat level vulnerabilities and warned its users to take immediate actions. 

Google has restricted information of additional attacks in a bid to buy time for its Chrome users. Though the search giant has released some of the vulnerabilities and rated the threat level as critically dangerous: 

  • Critical – CVE-2021-4098: Insufficient data validation in Mojo. Reported by Sergei Glazunov of Google Project Zero on 2021-10-26
  • High – CVE-2021-4099: Use after free in Swiftshader. Reported by Aki Helin of Solita on 2021-11-16
  • High – CVE-2021-4100: Object lifecycle issue in ANGLE. Reported by Aki Helin of Solita on 2021-11-19
  • High – CVE-2021-4101: Heap buffer overflow in Swiftshader. Reported by Abraruddin Khan and Omair  on 2021-10-21
  • High – CVE-2021-4102: Use after free in V8. Reported by Anonymous on 2021-12-09

The current attack is different from the earlier attacks as it is not following the pre-established norms of attack.  The vulnerability along with Chrome browser is also likely to affect other Chrome-based browsers like Microsoft Edge, Amazon Silk, Brave, Opera, and Samsung Internet.

Hackers have been known to use various methods like  ‘Use-After-Free’ (UAF) exploits and  Heap buffer overflow flaws alias ‘Heap Smashing’ to carry out attacks.

How to Stay Safe?

Google has released a new version of Chrome 96.0.4664.110, this will be rolled out over the coming days/weeks. This means you may not be able to protect yourself immediately. 

Update Google Chrome Browser

  1. Navigate to Settings > Help > About Google Chrome
  2. If your Chrome browser is listed as 96.0.4664.110 or higher, you are safe. 
  3. If your browser is not updated, it would be important you check regularly for the new version. 
  4. Once your browser has updated, restart it to ensure the browser is protected. This is an important step for users as if you forget you will be vulnerable to the attack.

The number of such attacks is continuously increasing this year, Google confirmed these were more than in the whole of 2020. To stay safe Chrome users are better off checking your browser version and updating it ASAP. 

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