A tampering vulnerability exists in Microsoft Windows when a man-in-the-middle attacker is able to successfully bypass the NTLM MIC (Message Integrity Check) protection. An attacker who successfully exploited this vulnerability could gain the ability to downgrade NTLM security features. To exploit this vulnerability, the attacker would need to tamper with the NTLM exchange. The attacker could then modify flags of the NTLM packet without invalidating the signature. The update addresses the vulnerability by hardening NTLM MIC protection on the server-side.

A tampering vulnerability exists in Microsoft Windows when a man-in-the-middle attacker is able to successfully bypass the NTLM MIC (Message Integrity Check) protection, aka 'Windows NTLM Tampering Vulnerability'.

Schneider Electric is aware of multiple Microsoft Windows vulnerabilities in its Schneider Conext™ Advisor 2 & Conext™ Control V2 products. The Conext™ Advisor 2 is a web portal with an efficient, task-oriented interface for managing and optimizing the performance of solar power plants and includes a complete suite of tools for professional users. The Conext™ Control V2 is a Solar Power Plant monitoring solution. Failure to apply the remediations provided below may risk remote code execution, which could result in undesired behavior within the operating system. An attacker who successfully exploits this vulnerability could execute arbitrary code on the target system and then install programs; view, change, or delete data; or create new accounts with full user rights.