Update Chrome browser now to avoid an exploit already in the wild

Cisco Amine
3 min readDec 1, 2023

Update Chrome browser now to avoid an exploit already in the wild

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If you are a Chrome user on Mac, Linux, or Windows, it is crucial to update your browser immediately to protect yourself from a zero-day vulnerability that has been actively exploited. Google has released a critical security update to address this issue, and it is essential to stay proactive in securing your system.

The Zero-day Vulnerability

The vulnerability, known as CVE-2023–6345, is an integer overflow weakness that affects Skia, an open-source 2D graphics library within the Chrome graphics engine. Although Google has not provided extensive details about the exploit, it is confirmed that an exploit for CVE-2023–6345 exists in the wild. This means that malicious actors have been taking advantage of this vulnerability to potentially access personal data and deploy malicious code.

Sandbox escapes, which can be facilitated through this exploit, allow attackers to infect vulnerable systems with malicious code and steal sensitive user information. The severity of this vulnerability cannot be understated, as it puts users at risk of data theft and other cyberattacks.

Google’s Response

Google’s Threat Analysis Group (TAG) discovered the CVE-2023–6345 vulnerability on November 24th. As is customary with many tech companies, Google has chosen to keep specific details of the exploit under wraps to prevent attackers from exploiting unprotected Chrome users further. This approach ensures that users are not exposed to additional risks while the necessary fixes are being implemented.

Google has released a Chrome stable channel update to address the vulnerability. The update, version 119.0.6045.199, is being rolled out over the coming days and weeks. If you have already set your Chrome browser to update automatically, you may not need to take any action. However, it is advisable for all other users to manually update their browsers to the latest version within the Google Chrome settings.

How to Update Chrome

To update your Chrome browser manually, follow these steps:

  1. Open Chrome and click on the three-dot menu icon in the top right corner of the browser window.
  2. From the dropdown menu, select “Settings.”
  3. In the Settings tab, click on “About Chrome” or “About Google Chrome.”
  4. Chrome will automatically check for updates and start downloading the latest version if available.
  5. Once the download is complete, you will be prompted to relaunch the browser to complete the update.

Ensure that you restart Chrome after the update to activate the new version and ensure that you are protected against the CVE-2023–6345 vulnerability.

Additional Vulnerabilities Fixed

In addition to addressing the CVE-2023–6345 vulnerability, Google has fixed six other security vulnerabilities in this update. These vulnerabilities include:

  • CVE-2023–6348: Type confusion vulnerability in Spellcheck.
  • CVE-2023–6347: Use-after-free vulnerability in Mojo.
  • CVE-2023–6346: Use-after-free vulnerability in WebAudio.
  • CVE-2023–6350: Out of bounds memory access vulnerability in libavif.
  • CVE-2023–6351: Use-after-free vulnerability in libavif.

It is essential to keep your browser up to date to protect yourself from these vulnerabilities as well.

Chrome’s Ongoing Efforts

Google’s prompt response to the CVE-2023–6345 vulnerability highlights the company’s commitment to ensuring the security of its users. This is not the first time Google has encountered zero-day vulnerabilities in its Chrome browser. In fact, this year alone, Google has addressed a total of seven zero-day vulnerabilities, including CVE-2023–2033, CVE-2023–2136, CVE-2023–3079, CVE-2023–4762, CVE-2023–4863, and CVE-2023–5217.

Google’s continuous efforts to identify and patch such vulnerabilities demonstrate their dedication to protecting users from potential cyber threats. It is crucial for users to remain vigilant and update their browsers regularly to take advantage of these security fixes.

Conclusion

The recent discovery and exploitation of the CVE-2023–6345 vulnerability in the Chrome browser highlight the importance of keeping your software up to date. By ensuring that you have the latest version of Chrome installed, you can protect yourself from potential data theft and other cyberattacks.

Remember to regularly check for updates and enable automatic updates whenever possible. By taking these proactive measures, you can stay one step ahead of potential threats and keep your online experience secure.

Don’t wait any longer — update your Chrome browser now to avoid falling victim to the actively exploited zero-day vulnerability. Your security and peace of mind are worth the effort.

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