Vulnerability Spotlight: Use-after-free condition in Google Chrome could lead to code execution

Summary: Marcin Towalski of Cisco Talos discovered a use-after-free vulnerability in Blink, the DOM parsing and rendering engine at the core of Chromium, tracked as TALOS-2021-1352 (CVE-2021-30625). Opening a specially crafted web page in Chrome can trigger reuse of previously freed memory, which can lead to arbitrary code execution, and Talos confirmed Google Chrome versions 92.0.4515.131 (Stable) and 94.0.4597.1 (Canary) could be exploited.
Why it matters: Exploitation requires only that a user open a crafted page, so the exposure sits with every employee browsing the web on an unpatched Chrome build. Talos released Snort rules 58001 and 58002 to detect exploitation attempts, but detection is not the same as closing the hole.

Read the original at Cisco Talos ↗

Topics: Vulnerabilities & Patching
Mentions: CVE-2021-30625
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