{"id":43667,"date":"2021-10-29T15:42:31","date_gmt":"2021-10-29T15:42:31","guid":{"rendered":"https:\/\/packetstormsecurity.com\/news\/view\/32770\/Google-Fixes-Two-High-Severity-Zero-Day-Flaws-In-Chrome.html"},"modified":"2021-10-29T15:42:31","modified_gmt":"2021-10-29T15:42:31","slug":"google-fixes-two-high-severity-zero-day-flaws-in-chrome","status":"publish","type":"post","link":"https:\/\/www.threatshub.org\/blog\/google-fixes-two-high-severity-zero-day-flaws-in-chrome\/","title":{"rendered":"Google Fixes Two High Severity Zero Day Flaws In Chrome"},"content":{"rendered":"<div><img decoding=\"async\" src=\"https:\/\/www.zdnet.com\/a\/img\/resize\/ae6dde29f4169536dfcbb4378c12ec3788c82be5\/2020\/10\/27\/8dbe6a3a-f155-43c4-9d3a-b887ec216a18\/istock-1154834209.jpg?width=770&amp;height=578&amp;fit=crop&amp;auto=webp\" class=\"ff-og-image-inserted\"><\/div>\n<p>It&#8217;s time to update Chrome and once again, for the third month in a row, Google has fixed two previously unknown &#8216;zero-day&#8217; bugs in the world&#8217;s most popular desktop browser.<\/p>\n<p>Google disclosed that it had patched the two high-severity zero-day flaws in release notes for the stable release of Chrome version 95.0.4638.69 for Windows, Mac and Linux. Any version number higher than that will have the fixes.<\/p>\n<div class=\"relatedContent alignRight\">\n<h3 class=\"heading\"> <span class=\"int\">ZDNet Recommends<\/span> <\/h3>\n<\/p><\/div>\n<p>It&#8217;s a good idea to check out <a href=\"https:\/\/support.google.com\/chrome\/answer\/95414?hl=en&amp;co=GENIE.Platform=Desktop#:~:text=Go%20to%20%22About%20Google%20Chrome,Chrome%20to%20apply%20the%20update\" target=\"_blank\" rel=\"noopener noreferrer\" data-component=\"externalLink\">Google&#8217;s support page for Chrome updates<\/a>, which explains how Chrome can be set to automatically update when patches become available. Otherwise, Chrome has an &#8216;Update&#8217; button that is coloured red if an update is at least a week old, indicating that it should be installed.<\/p>\n<p><strong>SEE: <\/strong><a href=\"https:\/\/www.zdnet.com\/article\/this-new-ransomware-encrypts-your-data-and-makes-some-nasty-threats-too\/\"><strong>This new ransomware encrypts your data and makes some nasty threats, too<\/strong><\/a><\/p>\n<p>The two zero-day flaws &#8212; which are being exploited by attackers now &#8212; are being tracked with the identifiers CVE-2021-38000 and CVE-2021-38003. Both were found by Google&#8217;s Threat Analysis Group (TAG), which tracks state-sponsored and cyber-criminal exploit activity.&nbsp;<\/p>\n<p>The second of the two zero-days was also reported by Samuel Gro\u00df from Google Project Zero on 26 October, indicating how fast Google is responding to zero-day discoveries.<\/p>\n<p>CVE-2021-38000 is a design flaw due to &#8220;insufficient validation of untrusted input in Intents&#8221;. It was reported by TAG on September 15.<\/p>\n<section class=\"sharethrough-top placeholder\"> <\/section>\n<p>CVE-2021-38003 &#8212; a memory corruption flaw, <a href=\"https:\/\/docs.google.com\/spreadsheets\/d\/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY\/view#gid=2129022708\" target=\"_blank\" rel=\"noopener noreferrer\" data-component=\"externalLink\">according to Google Project Zero&#8217;s zero-day tracker<\/a> &#8212; is described vaguely as &#8220;inappropriate implementation in V8&#8221;. V8 is <a href=\"https:\/\/www.zdnet.com\/article\/bugs-in-chromes-javascript-engine-can-lead-to-powerful-exploits-this-project-aims-to-stop-them\/\">Chrome&#8217;s powerful JavaScript engine that Gro\u00df hopes to shore up<\/a> with additional sandboxing protections. As he <a href=\"https:\/\/docs.google.com\/document\/d\/1FM4fQmIhEqPG8uGp5o9A-mnPB5BOeScZYpkHjo0KKA8\/edit#heading=h.calchrb3vnqq\" target=\"_blank\" rel=\"noopener noreferrer\" data-component=\"externalLink\">noted in his proposal<\/a>, V8 bugs allow attackers to create &#8220;unusually powerful exploits&#8221; that are hard to mitigate with existing security technologies.<\/p>\n<p>&#8220;Google is aware that exploits for CVE-2021-38000 and CVE-2021-38003 exist in the wild,&#8221; <a href=\"https:\/\/chromereleases.googleblog.com\/2021\/10\/stable-channel-update-for-desktop_28.html\" target=\"_blank\" rel=\"noopener noreferrer nofollow\" data-component=\"externalLink\">Google said in release notes<\/a>. The update will roll out over the coming days or weeks, according to Google.&nbsp;<\/p>\n<p>There are eight, mostly memory-related, security fixes in this Chrome update. The currently listed high-severity flaws include a <a href=\"https:\/\/encyclopedia.kaspersky.com\/glossary\/use-after-free\/\" target=\"_blank\" rel=\"noopener noreferrer nofollow\" data-component=\"externalLink\">use-after-free<\/a> in Sign-in, another use-after-free in Chrome&#8217;s garbage collection, insufficient data validation in Chrome&#8217;s New Tab page, a type confusion in V8, and a use-after-free in Web Transport.<\/p>\n<p><strong>SEE: <\/strong><a href=\"https:\/\/www.zdnet.com\/article\/cloud-security-in-2021-a-business-guide-to-essential-tools-and-best-practices\/\"><strong>Cloud security in 2021: A business guide to essential tools and best practices<\/strong><\/a><\/p>\n<p>This Chrome release marks the 14th zero-day flaw Google has patched in Chrome this year. The <a href=\"https:\/\/www.zdnet.com\/article\/google-patches-two-chrome-zero-days\/\">10th was in mid-September<\/a> when it patched two zero-days. It patched two <a href=\"http:\/\/v\" target=\"_blank\" rel=\"noopener noreferrer nofollow\" data-component=\"externalLink\">more zero-days at the end of September<\/a> and a further two on Thursday.<\/p>\n<p>Google hasn&#8217;t attributed the exploits to any hacking group.&nbsp;<\/p>\n<p>That Google has patched an unusually high number of zero-day flaws in Chrome in 2021 could be interpreted in several ways. The more that get discovered and the quicker they&#8217;re fixed via updates is good for end-users. Once patched, the exploit is less valuable. This could mean defenders are getting better at spotting zero-days.<\/p>\n<p>On the other hand, Google Project Zero has seen an <a href=\"https:\/\/www.zdnet.com\/article\/google-details-recent-malware-campaigns-amid-uptick-in-zero-day-attacks\/\" target=\"_blank\" rel=\"noopener\">uptick in zero-days affecting major platforms like Chrome, Windows, and iOS in the past year<\/a>. The reason for that could be the commercialisation of the zero-day exploit market, providing a shortcut to the acquisition of exploits that otherwise require skills to develop.<\/p>\n<p> READ MORE <a href=\"https:\/\/packetstormsecurity.com\/news\/view\/32770\/Google-Fixes-Two-High-Severity-Zero-Day-Flaws-In-Chrome.html\">HERE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>READ MORE HERE&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[60],"tags":[9004],"class_list":["post-43667","post","type-post","status-publish","format-standard","hentry","category-packet-storm","tag-headlineflawgooglepatchzero-daychrome"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Google Fixes Two High Severity Zero Day 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