The flaw could allow a malicious website to read cookies, stored passwords and local files.
Several antivirus vendors have taken the open-source Chromium browser and created derivatives that they claim are more privacy-friendly and secure. Yet, at least two of them were recently found to have serious flaws that don’t exist in Chromium.
The latest example is the Avast SafeZone browser, internally known as Avastium, which is installed with the paid versions of Avast’s antivirus and security suites. Google Project Zero researcher Tavis Ormandy found a vulnerability that could allow an attacker to take control of Avastium when opening an attacker-controlled URL in any other locally installed browser.
After Ormandy reported the flaw on Dec. 18, Avast deployed a temporary fix that broke the attack chain. The company provided a complete fix Wednesday as part of Avast version 2016.11.1.2253.
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