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Rewterz Threat Alert – Citrix Network Breached
March 14, 2019Rewterz Threat Advisory – Microsoft Windows Server 2012 / Windows RT 8.1 / 8.1 Multiple Vulnerabilities
March 18, 2019Rewterz Threat Alert – Citrix Network Breached
March 14, 2019Rewterz Threat Advisory – Microsoft Windows Server 2012 / Windows RT 8.1 / 8.1 Multiple Vulnerabilities
March 18, 2019
Severity
Medium
Analysis Summary
Win32k flaw is an elevation of privilege vulnerability, which exists in Windows when the Win32k component fails to properly handle objects in memory. Win32k is the Windows kernel driver.
Specifically, the flaw is a race condition that is present in the win32k driver due to a lack of proper synchronization between undocumented system calls (NtDCompositionDiscardFrame and NtDCompositionDestroyConnection). A race condition occurs when system attempts to perform two or more operations at the same time.
To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system.
Impact
- Execution of arbitrary code
- Privileged access
Affected Products
Microsoft Windows 8 to 10 build 15063 64-bit operating systems
Remediation
Microsoft has patched this vulnerability.