An information disclosure vulnerability exists in Azure Active Directory (AAD) Microsoft Account (MSA) during the login request session. An attacker who successfully exploited the vulnerability could take over a user's account. To exploit the vulnerability, an attacker would have to trick a user into browsing to a specially crafted website, allowing the attacker to steal the user's token. The security update addresses the vulnerability by correcting how MSA handles cookies.
| Software | From | Fixed in |
|---|---|---|
| microsoft / windows_server_2012 | r2 | r2.x |
| microsoft / windows_10 | 1607 | 1607.x |
| microsoft / windows_10 | 1703 | 1703.x |
| microsoft / windows_10 | 1709 | 1709.x |
| microsoft / windows_10 | 1803 | 1803.x |
| microsoft / windows_server_2016 | 1803 | 1803.x |
| microsoft / windows_10 | 1809 | 1809.x |
| microsoft / windows_server_2016 | 1903 | 1903.x |
| microsoft / windows_10 | 1903 | 1903.x |