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MDS Tool: find out if you are vulnerable to Microarchitectural Data Sampling Attacks
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[Image: mds-tool.png]

MDS Tool is a free cross-platform security program for Windows and Linux devices that checks whether the system's hardware is vulnerable to Microarchitectural Data Sampling (MDS) attacks.

Intel disclosed a new group of security issues in its processors on May 14, 2019 that it calls "Microarchitectural Data Sampling". The flaws are related to speculative execution attacks such as Spectre or Meltdown discovered last year. The issue affects all modern Intel CPUs in servers, desktops, and laptops.

Rogue In-Flight Data Load (RIDL) and Fallout, two MDS attacks, differ from last year's attacks in several meaningful ways that make them potentially more powerful. The attacks don't depend on the processor cache and don't need to make assumptions about the memory layout. They leak arbitrary in-flight data from internal CPU buffers.

Attacks, when carried out successfully, read data from other system processes and could lead to the leaking of sensitive information such as passwords, credit card numbers, or cookies.

Attackers who can run unprivileged code on machines with recent Intel CPUs - whether using shared cloud computing resources, or using JavaScript on a malicious website or advertisement - can steal data from other programs running on the same machine, across any security boundary: other applications, the operating system kernel, other VMs (e.g., in the cloud), or even secure (SGX) enclaves. (via)
Microsoft released patches for some versions of Windows on yesterday's Patch Tuesday, Canonical released updates for Ubuntu yesterday as well.
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