Ubuntu Security Notice 3257-1 - A large number of security issues were discovered in the WebKitGTK+ Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.
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WebKit suffers from a use-after-free vulnerability in RenderLayer.
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Apple Security Advisory 2017-03-27-2 - Safari 10.1 is now available and addresses multiple vulnerabilities.
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