{"id":74521,"date":"2018-01-23T16:20:52","date_gmt":"2018-01-24T00:20:52","guid":{"rendered":"https:\/\/www.intego.com\/mac-security-blog\/?p=74521"},"modified":"2018-01-23T16:20:52","modified_gmt":"2018-01-24T00:20:52","slug":"macos-sierra-os-x-el-capitan-updates-patch-meltdown-flaw","status":"publish","type":"post","link":"https:\/\/www.intego.com\/mac-security-blog\/macos-sierra-os-x-el-capitan-updates-patch-meltdown-flaw\/","title":{"rendered":"macOS Sierra, OS X El Capitan Updates Patch Meltdown Flaw"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-9911\" src=\"https:\/\/www.intego.com\/mac-security-blog\/wp-content\/uploads\/2013\/01\/Apple-Security-Update-Header.png\" alt=\"Apple software security updates\" width=\"660\" height=\"370\" srcset=\"https:\/\/www.intego.com\/mac-security-blog\/wp-content\/uploads\/2013\/01\/Apple-Security-Update-Header.png 660w, https:\/\/www.intego.com\/mac-security-blog\/wp-content\/uploads\/2013\/01\/Apple-Security-Update-Header-150x84.png 150w, https:\/\/www.intego.com\/mac-security-blog\/wp-content\/uploads\/2013\/01\/Apple-Security-Update-Header-300x168.png 300w, https:\/\/www.intego.com\/mac-security-blog\/wp-content\/uploads\/2013\/01\/Apple-Security-Update-Header-657x368.png 657w\" sizes=\"auto, (max-width: 660px) 100vw, 660px\" \/><\/p>\n<p>Apple has just released macOS High Sierra 10.13.3, Security Update 2018-001 Sierra and Security Update 2018-001 El Capitan, Safari 11.0.3, iOS 11.2.5, watchOS 4.2.2 and\u00a0tvOS 11.2.5. These updates fix a vast array of security bugs, most prominently for macOS Sierra and OS X El Capitan as the updates patch the <a href=\"https:\/\/www.intego.com\/mac-security-blog\/meltdown-and-spectre-what-apple-users-need-to-know\/\" target=\"_blank\">Meltdown flaw<\/a>.<\/p>\n<p>Ensuring your software is always up-to-date is one of the best ways to maintain your Apple product&#8217;s security, so without further ado, following is a list of key details in each update as well as where you can obtain them for your Apple device.<\/p>\n<h3>macOS High Sierra 10.13.3, Security Update 2018-001 Sierra, Security Update 2018-001 El Capitan<\/h3>\n<p>These updates are available for macOS High Sierra 10.13.2, macOS Sierra 10.12.6, and OS X El Capitan 10.11.6.<\/p>\n<p>The most notable security updates are\u00a0available for\u00a0macOS Sierra and OS X El Capitan, which include\u00a0patches for the Meltdown flaw.\u00a0Another\u00a0bug fix mentioned in <a href=\"https:\/\/support.apple.com\/en-us\/HT208465\" target=\"_blank\">Apple&#8217;s security notice<\/a>\u00a0is related to Messages, where &#8220;processing a maliciously crafted text message may lead to application denial of service.&#8221; Stay tuned\u00a0tomorrow morning for a new\u00a0episode of the <a href=\"http:\/\/podcast.intego.com\" target=\"_blank\">Intego Mac Podcast<\/a> in which Kirk and Josh take a deeper look at\u00a0these kinds of Message-based bugs.<\/p>\n<p>Altogether, 17 security issues were addressed in the above mentioned operating system updates. For the full list of security issues addressed by these updates, <a href=\"https:\/\/support.apple.com\/en-us\/HT208465\" target=\"_blank\" rel=\"noopener\">have a look here<\/a>.<\/p>\n<p>Mac users can download and install\u00a0macOS High Sierra 10.13.3, Security Update 2018-001 (Sierra), and Security Update 2018-001 (El Capitan) from the Mac App Store, or you can get them from Apple&#8217;s official website.<\/p>\n<p><strong>Apple.com Downloads<\/strong><\/p>\n<ul>\n<li><a href=\"https:\/\/support.apple.com\/kb\/DL1952?viewlocale=en_US&amp;locale=en_US\" target=\"_blank\">macOS High Sierra 10.13.3 Update for iMac Pro<\/a><\/li>\n<li><a href=\"https:\/\/support.apple.com\/kb\/DL1953?viewlocale=en_US&amp;locale=en_US\" target=\"_blank\">macOS High Sierra 10.13.3 Combo Update<\/a><\/li>\n<li><a href=\"https:\/\/support.apple.com\/kb\/DL1956?viewlocale=en_US&amp;locale=en_US\" target=\"_blank\">Security Update 2018-001 (Sierra)<\/a><\/li>\n<li><a href=\"https:\/\/support.apple.com\/kb\/DL1955?viewlocale=en_US&amp;locale=en_US\" target=\"_blank\">Security Update 2018-001 (El Capitan)<\/a><\/li>\n<\/ul>\n<p>Note that macOS High Sierra 10.13.3 includes Safari 11.0.3, but Sierra and El Capitan users will see this as a separate download in the Mac App Store.<\/p>\n<h3>Safari 11.0.3<\/h3>\n<p>Safari 11.0.3 is a minor update that includes just 3 fixes for WebKit, all addressing the same vulnerability.<\/p>\n<blockquote><p><strong>WebKit<br \/>\n<\/strong>Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.3<br \/>\nImpact: Processing maliciously crafted web content may lead to arbitrary code execution<br \/>\nDescription: Multiple memory corruption issues were addressed with improved memory handling.<\/p><\/blockquote>\n<p>Further security release notes may be published at a later date, so keep an eye on <a href=\"https:\/\/support.apple.com\/en-us\/HT208475\" target=\"_blank\" rel=\"noopener\">this page<\/a> for more details.<\/p>\n<h3>iOS 11.2.5<\/h3>\n<p>iOS 11.2.5\u00a0is available for iPhone 5s and later, iPad Air and later, and iPod touch 6th generation.<\/p>\n<p>A total of 13 security bugs were patched in iOS 11.2.5, many of which were also\u00a0addressed in macOS. Most notably, Apple tackled\u00a0a bug that allowed a <a href=\"https:\/\/www.macrumors.com\/2018\/01\/16\/malicious-link-ios-mac-freezes\/\" target=\"_blank\" rel=\"noopener\">malicious link to crash the Messages app<\/a>.<\/p>\n<p>The full list of security issues addressed can be found <a href=\"https:\/\/support.apple.com\/en-us\/HT208463\" target=\"_blank\" rel=\"noopener\">here<\/a>. iOS users can download iOS 11.2.5 over the air by going to <strong>Settings<\/strong> &gt; <strong>General<\/strong> &gt; <strong>Software Update<\/strong>. You can also connect your iOS device to your Mac and let iTunes do the update for you.<\/p>\n<h3>watchOS 4.2.2<\/h3>\n<p>watchOS 4.2.2 is available for\u00a0all Apple Watch models.<\/p>\n<p>A total of 12 security issues were addressed, including a\u00a0fix for the malicious link that could crash Messages.<\/p>\n<p>The full list of security issues addressed can be found <a href=\"https:\/\/support.apple.com\/en-us\/HT208464\" target=\"_blank\" rel=\"noopener\">here<\/a>. Apple watchOS users can download and install watchOS 4.2.2 by connecting the watch to its charger, and then on your\u00a0iPhone open\u00a0<strong>Apple Watch app<\/strong> &gt; <strong>My Watch tab<\/strong> &gt; <strong>General<\/strong> &gt; <strong>Software Update<\/strong>.<\/p>\n<h3>tvOS 11.2.5<\/h3>\n<p>tvOS 11.2.5 is available for Apple TV 4K and Apple TV (4th generation).<\/p>\n<p>The same security issues that Apple patched in iOS 11.2.5 and watchOS 4.2.2 were also patched in\u00a0tvOS 11.2.5, excluding a\u00a0&#8220;LinkPresentation&#8221; flaw that does not impact\u00a0tvOS.<\/p>\n<p>The full list of security issues addressed can be found <a href=\"https:\/\/support.apple.com\/en-us\/HT208462\" target=\"_blank\" rel=\"noopener\">here<\/a>. Apple TV users can update to\u00a0tvOS 11.2.5 directly from your\u00a0Apple TV by going to <strong>Settings<\/strong> &gt; <strong>System<\/strong> &gt; <strong>Update Software<\/strong>.<\/p>\n<p>While much\u00a0can be said about the current state of macOS and Apple&#8217;s quality assurance testing before the company releases software updates, it is still best to install these updates as soon as you can to maintain your Apple product&#8217;s security.\u00a0After all, with the <a href=\"https:\/\/www.intego.com\/mac-security-blog\/meltdown-and-spectre-what-apple-users-need-to-know\/\" target=\"_blank\">Meltdown and Spectre vulnerabilities<\/a> now patched across the board for all Apple supported operating systems and hardware, these are\u00a0two less things Mac users have to worry about.\u00a0Of course, having a <a href=\"https:\/\/www.intego.com\/mac-security-blog\/data-backup-plan-how-to-implement-the-3-2-1-backup-strategy\/\" target=\"_blank\">good backup of your data<\/a> is important before doing any kind of updates, so make sure you do so\u00a0first.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Apple has just released macOS High Sierra 10.13.3, Security Update 2018-001 Sierra and Security Update 2018-001 El Capitan, Safari 11.0.3, iOS 11.2.5, watchOS 4.2.2 and\u00a0tvOS 11.2.5. These updates fix a vast array of security bugs, most prominently for macOS Sierra and OS X El Capitan as the updates patch the Meltdown flaw. Ensuring your software [&hellip;]<\/p>\n","protected":false},"author":79,"featured_media":55957,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[3892,3880,3889,3886,3883,3898,3895],"class_list":["post-74521","post","type-post","status-publish","format-standard","has-post-thumbnail","category-security-news","tag-ios-11-2-5","tag-macos-high-sierra-10-13-3","tag-safari-11-0-3","tag-security-update-2018-001-el-capitan","tag-security-update-2018-001-sierra","tag-tvos-11-2-5","tag-watchos-4-2-2"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Apple has just released macOS High Sierra 10.13.3, Security Update 2018-001 Sierra and Security Update 2018-001 El Capitan, Safari 11.0.3, iOS 11.2.5, watchOS 4.2.2 and tvOS 11.2.5. 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