Windows Exploitation Tricks: Exploiting Arbitrary Object Directory Creation for Local Elevation of Privilege

Posted by James Forshaw, Project Zero And we’re back again for another blog in my series on Windows Exploitation tricks. This time I’ll detail how I was able to exploit Issue 1550 which results in an arbitrary object directory being created by using a useful behavior of the CSRSS privileged...

Windows: NPFS Symlink Security Feature Bypass/Elevation of Privilege/Dangerous Behavior(CVE-2018-0823)

Windows: NPFS Symlink Security Feature Bypass/Elevation of Privilege/Dangerous Behavior Platform: Windows 10 1709 functionality not present prior to this version Class: Security Feature Bypass/Elevation of Privilege/Dangerous Behavior Summary: It’s possible to create NPFS symlinks as a low IL or...

Windows: Global Reparse Point Security Feature Bypass/Elevation of Privilege(CVE-2018-0822)

Windows: Global Reparse Point Security Feature Bypass/Elevation of Privilege Platform: Windows 10 1709 functionality not present prior to this version Class: Security Feature Bypass/Elevation of Privilege Summary: It’s possible to use the new Global Reparse Point functionality introduced in Windo...

Microsoft Windows - NPFS Symlink Security Feature BypassElevation of PrivilegeDangerous Behavior

Microsoft Windows - NPFS Symlink Security Feature BypassElevation of PrivilegeDangerous Behavior Windows: NPFS Symlink Security Feature Bypass/Elevation of Privilege/Dangerous Behavior Platform: Windows 10 1709 functionality not present prior to this version Class: Security Feature Bypass/Elevati...

Microsoft Windows - Global Reparse Point Security Feature BypassElevation of Privilege

Microsoft Windows - Global Reparse Point Security Feature BypassElevation of Privilege Windows: Global Reparse Point Security Feature Bypass/Elevation of Privilege Platform: Windows 10 1709 functionality not present prior to this version Class: Security Feature Bypass/Elevation of Privilege...

Microsoft Windows - NPFS Symlink Security Feature Bypass/Elevation of Privilege/Dangerous Behavior

Windows: NPFS Symlink Security Feature Bypass/Elevation of Privilege/Dangerous Behavior Platform: Windows 10 1709 functionality not present prior to this version Class: Security Feature Bypass/Elevation of Privilege/Dangerous Behavior Summary: It’s possible to create NPFS symlinks as a low IL or...

Microsoft Silently Fixes Kernel Bug That Led to Chrome Sandbox Bypass

Microsoft appears to have silently fixed a two-year-old bug in in Windows Kernel Object Manager that could have allowed for the bypass of privileges in Google’s Chrome browser. James Forshaw, a researcher with Google’s Project Zero first reported the issue in December 2014. Microsoft responded to...

A Shadow of our Former Self

Posted by James Forshaw of Google Project Zero “Necessity is the Mother of Invention” as it’s said, and this is no more true than when looking for and exploiting security vulnerabilities. When new exploit mitigations are introduced, either a way of bypassing the mitigation is needed or an...

CVE-2016-5461

Unspecified vulnerability in the Siebel Core - Server Framework component in Oracle Siebel CRM 8.1.1, 8.2.2, IP2014, IP2015, and IP2016 allows remote authenticated users to affect confidentiality via vectors related to Object Manager...

CVE-2016-5461

Unspecified vulnerability in the Siebel Core - Server Framework component in Oracle Siebel CRM 8.1.1, 8.2.2, IP2014, IP2015, and IP2016 allows remote authenticated users to affect confidentiality via vectors related to Object Manager...

CVE-2016-5461

Unspecified vulnerability in the Siebel Core - Server Framework component in Oracle Siebel CRM 8.1.1, 8.2.2, IP2014, IP2015, and IP2016 allows remote authenticated users to affect confidentiality via vectors related to Object Manager...

CVE-2016-5461

Unspecified vulnerability in the Siebel Core - Server Framework component in Oracle Siebel CRM 8.1.1, 8.2.2, IP2014, IP2015, and IP2016 allows remote authenticated users to affect confidentiality via vectors related to Object Manager...

CVE-2016-5461

CVE-2016-5461 affects Oracle Siebel CRM: Siebel Core – Server Framework (Object Manager) in versions 8.1.1, 8.2.2, IP2014–IP2016. The vulnerability is described as an unspecified issue that allows remote authenticated users to affect confidentiality via vectors related to Object Manager, enabling...

PT-2016-6454

Name of the Vulnerable Software and Affected Versions Oracle Siebel CRM versions 8.1.1, 8.2.2, IP2014, IP2015, and IP2016 Description The issue affects confidentiality and is related to the Object Manager in the Siebel Core - Server Framework component. It can be exploited by remote authenticated...

CVE-2016-5461: Undefined Security Weakness

Unspecified vulnerability in the Siebel Core - Server Framework component in Oracle Siebel CRM 8.1.1, 8.2.2, IP2014, IP2015, and IP2016 allows remote authenticated users to affect confidentiality via vectors related to Object Manager...

CVE-2016-3258

Race condition in the kernel in Microsoft Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 allows local users to bypass the Low Integrity protection mechanism and write to files by leveraging unspecified object-manager features, aka "Windows File System...

CVE-2016-3258: Concurrent Execution using Shared Resource with Improper Synchronization

Race condition in the kernel in Microsoft Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 allows local users to bypass the Low Integrity protection mechanism and write to files by leveraging unspecified object-manager features, aka "Windows File System...

Windows File System Security Feature Bypass Vulnerability

A security feature bypass vulnerability exists in the Windows kernel that could allow an attacker to exploit time of check time of use TOCTOU issues in file path-based checks from a low-integrity application. An attacker who successfully exploited this vulnerability could potentially modify files...

Microsoft Windows - Custom Font Disable Policy Bypass

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=779 Windows: Custom Font Disable Policy Bypass Platform: Windows 10 Only Class: Security Feature Bypass Summary: It’s possible to bypass the ProcessFontDisablePolicy check in win32k to load a custom font from an arbitrary file on...

Windows Drivers are True’ly Tricky

Posted by James Forshaw, Driving for Bugs Auditing a product for security vulnerabilities can be a difficult challenge, and there’s no guarantee you’ll catch all vulnerabilities even when you do. This post describes an issue I identified in the Windows Driver code for Truecrypt, which has already...