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Mozilla Firefox ESR < 45.5.1 RCE

High

Synopsis

The remote host has a web browser installed that is vulnerable to a remote code execution (RCE) attack vector.

Description

Versions of Mozilla Firefox ESR earlier than 45.5.1 are unpatched for a use-after-free condition in 'dom/smil/nsSMILTimeContainer.cpp' that is triggered when handling SVG animations. With a specially crafted web page, a context-dependent attacker can dereference already freed memory and execute arbitrary code.

Solution

Upgrade to Firefox version 45.5.1 or later.