Four new vulnerabilities have been found in Intel processors and can be exploited via side-channel attacks. The vulnerabilities have been named RIDL, Fallout, and ZombieLoad.
These vulnerabilities allow attackers to steal passwords, encryption keys, or any other type of data uploaded or stored on μνήμη buffer of CPUs.
The vulnerabilities are categorized as Microarchitectural Data Sampling (MDS) and are identified by the following four CVEs:
- CVE-2018-12126 - Microarchitectural Store Buffer Data Sampling (MSBDS)
- CVE-2018-12130 - Microarchitectural Fill Buffer Data Sampling (MFBDS)
- CVE-2018-12127 - Microarchitectural Load Port Data Sampling (MLPDS)
- CVE-2019-11091 - Microarchitectural Data Sampling Uncacheable Memory (MDSUM)
The researchers who announced the vulnerabilities, in addition to baptizing them (sic), also created two different websites, from which you can read more:
You should be aware that all patch solutions currently released are only mitigations and do not fully fix the vulnerabilities. To fully resolve these vulnerabilities, all the suppliers they state that you should disable hyper-threading, which will affect your computer.
Official MDS Advisories, Patches, or Updates:
- Amazon AWS
- Apple Lossless Audio CODEC (ALAC), advisory and security updates
- Citrix
- Chromium
- Intel
- Lenovo BIOS updates
Microsoft
- ADV190013 | Microsoft Guidance to Mitigate Microarchitectural Data Sampling vulnerabilities
- Windows guidance to protect against speculative execution side-channel vulnerabilities
Unfortunately no microcode updates are available for the following versions of Windows (and for Windows 10 version 1809, which will be released later):
- Windows 10 Version 1803 for x64-based Systems
- Windows Server, 1803 (Server Core Installation)
- Windows 10 Version 1809 for x64-based Systems
- Windows Server 2019
- Windows Server 2019 (Server Core Installation)
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