Microsoft says that it will continue to keep an eye on the impact of these vulnerabilities and launch more mitigations it deems necessary. These fixes are part of security updates Microsoft has already issued in response to the exploits' disclosure. Last month, Intel, AMD, ARM, IBM, Microsoft and other major tech companies released updates, mitigations and advisories for two new variants of the speculative execution attack methods, namely Variant 3a and. These two changes substantially increase the difficulty of successfully inferring the content of the CPU cache from a browser process. The flaws are tracked as Spectre (Variant 1 CVE-2017-5753 and Variant 2 CVE-2017-5715) and Meltdown (Variant 3 CVE-2017-5754). Initially, we are removing support for SharedArrayBuffer from Microsoft Edge (originally introduced in the Windows 10 Fall Creators Update), and reducing the resolution of performance.now() in Microsoft Edge and Internet Explorer from 5 microseconds to 20 microseconds, with variable jitter of up to an additional 20 microseconds. To mitigate the attacks in its browsers, Microsoft is has made a couple of changes to both Edge and Internet Explorer: Through these techniques, attackers can use JavaScript code in a browser to potentially read memory on a user's machine. The vulnerabilities, Microsoft says, can be exploited by techniques known as speculative execution side-channel attacks. Microsoft delivers free Meltdown-Spectre assessment tool for IT pros Protecting an organization from attacks based on two widespread and potentially deadly security vulnerabilities requires. Microsoft has now prepared a fixed update that wont BSOD computers running the AMD chip set and thus have begun to rerelease the update.
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