Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Active Directory Authentication Library | >= 5.0.5, < 5.2.0 |
| Microsoft | Nuget | 5.2.0 |
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1258PatchVendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1258PatchVendor Advisory
FAQ
What is CVE-2019-1258?
CVE-2019-1258 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 atta...
How severe is CVE-2019-1258?
CVE-2019-1258 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-1258?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Active Directory Authentication Library, Microsoft Nuget.