Apple released patches to address security issues with macOS, iOS, watchOS, and tvOS, along with some Windows woes.

Over 40 security holes were fixed with the release of iOS 11.3. The bugs affect iPhone 5s and later, iPad Air and later, and iPod touch 6th generation.

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WebKit was affected the most, with 19 issues resolved. Components such as CoreFoundation, CoreText, File System Events, iCloud Drive, Kernel, Mail, PluginKit, Safari, Security, and Storage were impacted as well.

Exploitation of these flaws could result in an attacker being able to run arbitrary code on the vulnerable device, in malicious applications elevating their privileges, user interface spoofing, data exfiltration, interception of encrypted email contents, denial of service, keylogging, the disabling of features on the device, or in causing device restarts.

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Multiple memory corruption issues discovered in WebKit could lead to arbitrary code execution when processing maliciously crafted web content. The bugs, 16 in total, were addressed with improved memory handling.

Apple resolved 35 vulnerabilities with the release of macOS High Sierra 10.13.4, Security Update 2018-002 Sierra, and Security Update 2018-002 El Capitan. The issues impact OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.3.

Exploitation of these issues could lead to exposed passwords, disclosed user information, elevation of privilege, denial of service, arbitrary code execution, reading of restricted memory, code signing enforcement bypass, interception and exfiltration of encrypted email contents, arbitrary command execution spoofing, and keylogging.

OS X El Capitan 10.11.6, macOS Sierra 10.12.6, and macOS High Sierra 10.13.4, Safari 11.1 patches 23 flaws that could lead to address bar spoofing, exfiltration of autofilled data without explicit user interaction, arbitrary code execution, cross-site scripting, ASSERT failure, denial of service, and websites exfiltrating data cross-origin.

iCloud for Windows 7.4 patches 20 vulnerabilities, 19 of which impact WebKit, the same as iTunes 12.7.4 for Windows. The bugs could lead to arbitrary code execution, elevation of privileges, ASSERT failure, denial of service, or malicious websites exfiltrating data cross-origin.

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