Safari 5.0.2 Update Fixes WebKit Bugs
Apple has released Safari 5.0.2 and 4.1.2 updates for Mac OS X and Windows which fix issues in both Safari and WebKit (the browser’s rendering engine).
The first issue, which only affects Safari on Windows systems, may lead to code execution if the user attempts to reveal the location of a downloaded file. The other two vulnerabilities include an input validation issue in WebKit’s handling of floating point data types, and a use-after-free issue in WebKit’s handling of elements with run-in styling. Both of these could be used to perform arbitrary code execution.
These two updates should be available in Software Update.
Hit the jump for Apple’s full patch info.
Safari 5.0.2 and Safari 4.1.2
- SafariCVE-ID: CVE-2010-1805
Available for: Windows 7, Vista, XP SP2 or later
Impact: Opening a file in a directory that is writable by other users may lead to arbitrary code execution
Description: A search path issue exists in Safari. When displaying the location of a downloaded file, Safari launches Windows Explorer without specifying a full path to the executable. Launching Safari by opening a file in a specific directory will include that directory in the search path. Attempting to reveal the location of a downloaded file may execute an application contained in that directory, which may lead to arbitrary code execution. This issue is addressed by using an explicit search path when launching Windows Explorer. This issue does not affect Mac OS X systems. Credit to Simon Raner of ACROS Security for reporting this issue.
- WebKitCVE-ID: CVE-2010-1807
Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6.2 or later, Mac OS X Server v10.6.2 or later, Windows 7, Vista, XP SP2 or later
Impact: Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution
Description: An input validation issue exists in WebKit’s handling of floating point data types. Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution. This issue is addressed through improved validation of floating point values. Credit to Luke Wagner of Mozilla for reporting this issue.
- WebKitCVE-ID: CVE-2010-1806
Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6.2 or later, Mac OS X Server v10.6.2 or later, Windows 7, Vista, XP SP2 or later
Impact: Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution
Description: A use after free issue exists in WebKit’s handling of elements with run-in styling. Visiting a maliciously crafted website may lead to an unexpected application termination or arbitrary code execution. This issue is addressed through improved handling of object pointers. Credit to wushi of team509, working with TippingPoint’s Zero Day Initiative for reporting this issue.
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