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medium5.6Public exploit code

CVE-2019-1125

An information disclosure vulnerability exists when certain central processing units (CPU) speculatively access memory.

Public exploit code

Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.

Impact

An information disclosure vulnerability exists when certain central processing units (CPU) speculatively access memory. An attacker who successfully exploited the vulnerability could read privileged data across trust boundaries. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The vulnerability would not allow an attacker to elevate user rights directly, but it could be used to obtain information that could be used to try to compromise the affected system further. On January 3, 2018, Microsoft released an advisory and security updates related to a newly-discovered class of hardware vulnerabilities (known as Spectre) involving speculative execution side channels that affect AMD, ARM, and Intel CPUs to varying degrees. This vulnerability, released on August 6, 2019, is a variant of the Spectre Variant 1 speculative execution side channel vulnerability and has been assigned CVE-2019-1125. Microsoft released a security update on July 9, 2019 that addresses the vulnerability through a software change that mitigates how the CPU speculatively accesses memory. Note that this vulnerability does not require a microcode update from your device OEM.

Affected products

VendorProductAffected versions
MicrosoftWindows 10
All versions
Versions 1607, 1703, 1709, 1803, 1809
MicrosoftWindows 7
All versions
MicrosoftWindows 8.1
All versions
MicrosoftWindows Rt 8.1
All versions
MicrosoftWindows Server 2008
All versions
Version r2
MicrosoftWindows Server 2012
All versions
Version r2
MicrosoftWindows Server 2016
All versions
Versions 1803, 1903
MicrosoftWindows Server 2019
All versions
RedhatVirtualization Host
Version 4.0
RedhatEnterprise Linux Desktop
Version 7.0
RedhatEnterprise Linux Server
Version 7.0
RedhatEnterprise Linux Server Aus
Version 7.7

References