Apple has released Safari 8.0.6, 7.1.6, and 6.2.6 with several security fixes. According to an Apple Support document, these updates address WebKit vulnerabilities that could lead to arbitrary code execution or user interface spoofing.
WebKit
Available for: OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5, and OS X Yosemite v10.10.3
Impact: Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution
Description: Multiple memory corruption issues existed in WebKit. These issues were addressed through improved memory handling.
WebKit History
Available for: OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5, and OS X Yosemite v10.10.3
Impact: Visiting a maliciously crafted website may compromise user information on the filesystem
Description: A state management issue existed in Safari that allowed unprivileged origins to access contents on the filesystem. This issue was addressed through improved state management.
WebKit Page Loading
Available for: OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5, and OS X Yosemite v10.10.3
Impact: Visiting a malicious website by clicking a link may lead to user interface spoofing
Description: An issue existed in the handling of the rel attribute in anchor elements. Target objects could get unauthorized access to link objects. This issue was addressed through improved link type adherence.
Safari 8.0.6 is recommended for all OS X Yosemite users and can be downloaded through the software update utility in the Map App Store. Apple last issued a Safari 8.0.5 update with OS X 10.10.3, which was released about a month ago.
WebKit
Available for: OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5, and OS X Yosemite v10.10.3
Impact: Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution
Description: Multiple memory corruption issues existed in WebKit. These issues were addressed through improved memory handling.
WebKit History
Available for: OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5, and OS X Yosemite v10.10.3
Impact: Visiting a maliciously crafted website may compromise user information on the filesystem
Description: A state management issue existed in Safari that allowed unprivileged origins to access contents on the filesystem. This issue was addressed through improved state management.
WebKit Page Loading
Available for: OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5, and OS X Yosemite v10.10.3
Impact: Visiting a malicious website by clicking a link may lead to user interface spoofing
Description: An issue existed in the handling of the rel attribute in anchor elements. Target objects could get unauthorized access to link objects. This issue was addressed through improved link type adherence.
Safari 8.0.6 is recommended for all OS X Yosemite users and can be downloaded through the software update utility in the Map App Store. Apple last issued a Safari 8.0.5 update with OS X 10.10.3, which was released about a month ago.