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New Chrome 0-day Under Active Attacks – Update Your Browser Now

Attention readers, if you are using Google Chrome browser on your Windows, Mac, or Linux computers, you need to update your web browsing software immediately to the latest version Google released earlier today.

Google released Chrome version 86.0.4240.111 today to patch several security high-severity issues, including a zero-day vulnerability that has been exploited in the wild by attackers to hijack targeted computers.

Tracked as CVE-2020-15999, the actively exploited vulnerability is a type of memory-corruption flaw called heap buffer overflow in Freetype, a popular open source software development library for rendering fonts that comes packaged with Chrome.

"The issue is that libpng uses the original 32-bit values, which are saved in `png_struct`. Therefore, if the original width and/or height are greater than 65535, the allocated buffer won't be able to fit the bitmap," Glazunov explained.

Google released Chrome 86.0.4240.111 as Chrome's "stable" version, which is available to all users, not just to opted-in early adopters, saying that the company is aware of reports that "an exploit for CVE-2020-15999 exists in the wild," but did not reveal further details of the active attacks.

Besides the FreeType zero-day vulnerability, Google also patched four other flaws in the latest Chrome update, three of which are high-risk vulnerabilities—an inappropriate implementation bug in Blink, a use after free bug in Chrome's media, and use after free bug in PDFium—and one medium-risk use after free issue in browser's printing function.

Although the Chrome web browser automatically notifies users about the latest available version, users are recommended to manually trigger the update process by going to "Help → About Google Chrome" from the menu.


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