Description
An elevation of privilege vulnerability exists in Azure Active Directory Authentication Library On-Behalf-Of flow, in the way the library caches tokens. This vulnerability allows an authenticated attacker to perform actions in context of another user.
The authenticated attacker can exploit this vulneraiblity by accessing a service configured for On-Behalf-Of flow that assigns incorrect tokens.
This security update addresses the vulnerability by removing fallback cache look-up for On-Behalf-Of scenarios.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | ADAL.NET | 5.0.0 – < publication | publication |
| Microsoft | Nuget 5.2.0 | 5.0.0 – < publication | publication |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| NuGet | microsoft.identitymodel.clients.activedirectory | >= 5.0.0, < 5.2.0 | 5.2.0 | GHSA-xc6x-cq47-9chw |