CVEvulnerability
CVE-2019-1258
8.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2019-08-14
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 8.8 HIGH — CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 6.5 MEDIUM — AV:N/AC:L/Au:S/C:P/I:P/A:P
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 configurations
• microsoft active directory authentication library (>= 5.0.5 < 5.2.0)
• microsoft active directory authentication library 5.0.0
• microsoft active directory authentication library 5.0.1
• microsoft active directory authentication library 5.0.2
• microsoft active directory authentication library 5.0.3
• microsoft nuget 5.2.0
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1258 Patch, Vendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1258 Patch, Vendor Advisory