Microsoft Windows SAM and LSAD CVE-2016-0128 Downgrade Vulnerability

Description

An elevation of privilege vulnerability exists in the Security Account Manager (SAM) and Local Security Authority (Domain Policy) (LSAD) remote protocols when they accept authentication levels that do not protect them adequately. The vulnerability is caused by the way the SAM and LSAD remote protocols establish the Remote Procedure Call (RPC) channel. An attacker who successfully exploited this vulnerability could gain access to the SAM database. To exploit the vulnerability, an attacker could launch a man-in-the-middle (MiTM) attack, force a downgrade of the authentication level of the SAM and LSAD channels, and then impersonate an authenticated user. The security update addresses the vulnerability by modifying how the SAM and LSAD remote protocols handle authentication levels.

Affected Applications

Windows RT 8.1
Windows Vista x64 Edition Service Pack 2
Windows Server 2012
Windows 8
Windows 7
Windows 10
Windows Server 2008
Windows Vista Service Pack 2

CVE References

Other References