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CVE-2017-11830

Status Candidate

Overview

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".

Related Files

Microsoft Windows CiSetFileCache TOCTOU Security Feature Bypass
Posted Sep 19, 2018
Authored by James Forshaw, Google Security Research

Microsoft Windows suffers from a CiSetFileCache TOCTOU CVE-2017-11830 variant WDAC security feature bypass vulnerability.

tags | exploit, bypass
systems | windows
advisories | CVE-2017-11830, CVE-2018-8449
SHA-256 | eb52dc13fee602e4f4367c0eb42d933defb5c0336c73d90ce5236346a9ec00ba
Microsoft Windows CiSetFileCache TOCTOU Incomplete Fix
Posted Apr 17, 2018
Authored by James Forshaw, Google Security Research

The fix for CVE-2017-11830 is insufficient to prevent a normal user application adding a cached signing level to an unsigned file by exploiting a TOCTOU in CI leading to circumventing Device Guard policies.

tags | exploit
advisories | CVE-2017-11830, CVE-2018-0966
SHA-256 | 8bf899b59331805e3565783c1df52349bae6d10f5374cb34ff520b4495773303
Microsoft Windows CI CiSetFileCache TOCTOU Security Feature Bypass
Posted Nov 21, 2017
Authored by James Forshaw, Google Security Research

It is possible to add a cached signing level to an unsigned file by exploiting a TOCTOU in CI leading to circumvention of Device Guard policies and possibly PPL signing levels.

tags | exploit
advisories | CVE-2017-11830
SHA-256 | 10740234534d576953b78d366019b0eaed2b7e2f77b447ea307edd5c886a5515
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