Safari Update For El Capitan

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About Apple security updates

For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security updates page.

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Safari 10 was released alongside macOS Sierra 10.12 for OS X Yosemite and OS X El Capitan. It does not include all of the new features available in macOS Sierra, like Apple Pay on the web and picture-in-picture support for videos, but the update includes the following new functions. Jul 09, 2018  Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6. Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash. Description: A memory corruption issue was addressed with improved memory handling. CVE-2018-4270: found by OSS-Fuzz.

For more information about security, see the Apple Product Security page. You can encrypt communications with Apple using the Apple Product Security PGP Key.

Apple security documents reference vulnerabilities by CVE-ID when possible.

Safari 11.1.2

Released July 9, 2018

Safari

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

Impact: Visiting a malicious website may lead to address bar spoofing

Description: An inconsistent user interface issue was addressed with improved state management.

CVE-2018-4279: Ruilin Yang, Xu Taoyu (xia0yu.win)

CVE-2018-4362: Jun Kokatsu (@shhnjk)

Entry updated October 30, 2018

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash

Description: A memory corruption issue was addressed with improved memory handling.

CVE-2018-4270: found by OSS-Fuzz

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

Impact: A malicious website may exfiltrate audio data cross-origin

Description: Sound fetched through audio elements may be exfiltrated cross-origin. This issue was addressed with improved audio taint tracking.

CVE-2018-4278: Jun Kokatsu (@shhnjk)

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: A type confusion issue was addressed with improved memory handling.

CVE-2018-4284: found by OSS-Fuzz

Entry updated October 30, 2018

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

Impact: A malicious website may be able to cause a denial of service

Description: A race condition was addressed with additional validation.

CVE-2018-4266: found by OSS-Fuzz

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

Impact: Processing maliciously crafted web content may lead to arbitrary code execution

Description: Multiple memory corruption issues were addressed with improved memory handling.

CVE-2018-4261: Omair working with Trend Micro's Zero Day Initiative

CVE-2018-4262: Mateusz Krzywicki working with Trend Micro's Zero Day Initiative

CVE-2018-4263: Arayz working with Trend Micro's Zero Day Initiative

CVE-2018-4264: found by OSS-Fuzz, Yu Zhou and Jundong Xie of Ant-financial Light-Year Security Lab

CVE-2018-4265: cc working with Trend Micro's Zero Day Initiative

CVE-2018-4267: Arayz of Pangu team working with Trend Micro's Zero Day Initiative

CVE-2018-4272: found by OSS-Fuzz

WebKit

Safari 11.1.2 Update El Capitan

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash

Description: Multiple memory corruption issues were addressed with improved input validation.

CVE-2018-4271: found by OSS-Fuzz

CVE-2018-4273: found by OSS-Fuzz

WebKit

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

Impact: Visiting a malicious website may lead to address bar spoofing

Description: A spoofing issue existed in the handling of URLs. This issue was addressed with improved input validation.

CVE-2018-4274: Tomasz Bojarski

Entry updated October 30, 2018

WebKit Page Loading

Available for: OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.6

Impact: Visiting a malicious website may lead to address bar spoofing

Safari For El Capitan Download

Description: An inconsistent user interface issue was addressed with improved state management.

Safari Update Os X El Capitan

CVE-2018-4260: xisigr of Tencent's Xuanwu Lab (tencent.com)

Apple has released Safari 11 today alongside iOS 11, watchOS 4, tvOS 11, and more.

Ahead of next week’s release of macOS High Sierra, Apple has made Safari 11 available to users running macOS Sierra and OS X El Capitan. The update brings privacy, compatibility, and security improvements and is showing up in the Mac App Store.

Here are the release notes describing the new headlining features:

  • Stop media with audio from automatically playing on most websites
  • Adds the ability to configure Reader, content blockers, page zoom, and auto-play settings on a per-website basis, or for all websites
  • Improves AutoFill accuracy from Contacts cards
  • Includes updated media controls for HTML video and audio
  • Enhances performance and efficiency

More details on Safari 11 improvements can be found on Apple’s developer page along with Apple’s security page.

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