Cyber Risks · Cisco Talos

Vulnerability Spotlight: Remote code execution vulnerability Apple Safari

Summary: Cisco Talos researcher Marcin "Icewall" Noga discovered a remote code execution vulnerability in Apple Safari's WebKit feature, where an attacker could trigger a use-after-free condition in WebCore, the DOM-rendering system for WebKit used in Safari. A user must open a specially crafted malicious web page in Safari to trigger it, and Talos worked with Apple under its coordinated disclosure policy to resolve the issue and make an update available, with Snort rules 54586 and 54587 detecting exploitation attempts.

Bottom line: The flaw was confirmed in Safari/WebKit version 13.0.2 and requires only that a victim visit a malicious web site, so the exposure sits in ordinary browsing rather than any unusual user action.

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Topics
Vulnerabilities & Patching
Mentions
CVE-2020-9951
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