The vulnerability of the Microsoft Device Guard component in Windows operating systems allows a hacker to inject malicious code into Windows PowerShell sessions.

The vulnerability of the components used to protect the integrity of Microsoft Device Guard’s hardware and software on Windows operating systems is related to deficiencies in access control. Exploiting this vulnerability could allow an attacker, operating locally, to bypass integrity checks and...

November 27, 2017—KB4051033 (OS Build 14393.1914)

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Clarifying the behavior of mandatory ASLR

Last week, the CERT/CC published an advisory describing some unexpected behavior they observed when enabling system-wide mandatory Address Space Layout Randomization ASLR using Windows Defender Exploit Guard WDEG and EMET on Windows 8 and above. In this blog post, we will explain the configuratio...

Clarifying the behavior of mandatory ASLR

Last week, the CERT/CC published an advisory describing some unexpected behavior they observed when enabling system-wide mandatory Address Space Layout Randomization ASLR using Windows Defender Exploit Guard WDEG and EMET on Windows 8 and above. In this blog post, we will explain the configuratio...

US-CERT Warns of ASLR Implementation Flaw In Windows

The U.S. Computer Emergency Readiness Team is warning of a vulnerability in Microsoft’s implementation of Address Space Layout Randomization that affects Windows 8, Windows 8.1 and Windows 10. The vulnerability could allow a remote attacker to take control of an affected system. Microsoft said it...

Windows Defender System Guard でシステムのセキュリティを強化し整合性を維持する

本記事は、Windows Security のブログ “Hardening the system and maintaining integrity with Windows Defender System Guard” 2017 年 10 月 23 日 米国...

Microsoft Windows 10 - CiSetFileCache TOCTOU Security Feature Bypass

Microsoft Windows 10 - CiSetFileCache TOCTOU Security Feature Bypass Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1332 Windows: CiSetFileCache TOCTOU Security Feature Bypass Platform: Windows 10 10586/14393/10S not tested 8.1 Update 2 or Windows 7 Class: Security Feature Bypa...

Microsoft Windows 10 - CiSetFileCache TOCTOU Security Feature Bypass

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1332 Windows: CiSetFileCache TOCTOU Security Feature Bypass Platform: Windows 10 10586/14393/10S not tested 8.1 Update 2 or Windows 7 Class: Security Feature Bypass Summary: It’s possible to add a cached signing level to an unsigne...

Microsoft Windows 10 - CiSetFileCache TOCTOU Security Feature Bypass Vulnerability

Exploit for windows platform in category local exploits Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1332 Windows: CiSetFileCache TOCTOU Security Feature Bypass Platform: Windows 10 10586/14393/10S not tested 8.1 Update 2 or Windows 7 Class: Security Feature Bypass Summary:...

BSA-2017-457

Security Advisory ID : BSA-2017-457 Component : GnuPG & Libgcrypt Revision : 2.0: Final GnuPG before 1.4.14, and Libgcrypt before 1.5.3 as used in GnuPG 2.0.x and possibly other products, allows local users to obtain private RSA keys via a cache side-channel attack involving the L3 cache, aka...

Windows 8 and later fail to properly randomize every application if system-wide mandatory ASLR is enabled via EMET or Windows Defender Exploit Guard

Overview Microsoft Windows 8 introduced a change in how system-wide mandatory ASLR is implemented. This change requires system-wide bottom-up ASLR to be enabled for mandatory ASLR to receive entropy. Tools that enable system-wide ASLR without also setting bottom-up ASLR will fail to properly...

Microsoft Windows Edge ChakraCore Security Bypass Vulnerability

Microsoft Windows 10 and Windows Server Version 1709 are products of Microsoft Corporation.Microsoft Windows 10 is a cross-platform operating system for PCs and laptops, tablets, and cell phones.Windows Server Version 1709 is a server operating system.Edge is one of the default browsers that come...

Microsoft Windows Device Guard Security Bypass Vulnerability (CNVD-2017-37111)

Microsoft Windows is a series of operating systems released by Microsoft Corporation in the U.S. Device Guard is one of the device protection components. A security feature bypass vulnerability exists in Device Guard in Microsoft Windows. A remote attacker could exploit this vulnerability to...

CVE-2017-11874

Microsoft Edge in Microsoft Windows 10 1703, 1709, Windows Server, version 1709, and ChakraCore allows an attacker to bypass Control Flow Guard CFG to run arbitrary code on a target system, due to how Microsoft Edge handles accessing memory in code compiled by the Edge Just-In-Time JIT compiler,...

CVE-2017-11874

Microsoft Edge in Microsoft Windows 10 1703, 1709, Windows Server, version 1709, and ChakraCore allows an attacker to bypass Control Flow Guard CFG to run arbitrary code on a target system, due to how Microsoft Edge handles accessing memory in code compiled by the Edge Just-In-Time JIT compiler,...

CVE-2017-11830

Device Guard in Windows 10 Gold, 1511, 1607, 1703, and 1709, Windows Server 2016, and Windows Server, version 1709 allows an attacker to make an unsigned file appear to be signed, due to a security feature bypass, aka "Device Guard Security Feature Bypass Vulnerability"...

CVE-2017-11830

Device Guard in Windows 10 Gold, 1511, 1607, 1703, and 1709, Windows Server 2016, and Windows Server, version 1709 allows an attacker to make an unsigned file appear to be signed, due to a security feature bypass, aka "Device Guard Security Feature Bypass Vulnerability"...

Security feature bypass

Device Guard in Windows 10 Gold, 1511, 1607, 1703, and 1709, Windows Server 2016, and Windows Server, version 1709 allows an attacker to make an unsigned file appear to be signed, due to a security feature bypass, aka "Device Guard Security Feature Bypass Vulnerability"...

Security feature bypass

Microsoft Edge in Microsoft Windows 10 1703, 1709, Windows Server, version 1709, and ChakraCore allows an attacker to bypass Control Flow Guard CFG to run arbitrary code on a target system, due to how Microsoft Edge handles accessing memory in code compiled by the Edge Just-In-Time JIT compiler,...

CVE-2017-11830

Device Guard in Windows 10 Gold, 1511, 1607, 1703, and 1709, Windows Server 2016, and Windows Server, version 1709 allows an attacker to make an unsigned file appear to be signed, due to a security feature bypass, aka "Device Guard Security Feature Bypass Vulnerability"...