CVE-2019-1258

Azure Active Directory Authentication Library Elevation of Privilege Vulnerability

Published Aug 14, 2019 CVSS 3.0 · 8.8 High EPSS 3.8% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-xc6x-cq47-9chw Vulnerability in Azure Active Directory Authentication Library
History
Type Values Removed Values Added
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. 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.
Weaknesses

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Aug 4, 2024, 6:13 PM
Reserved
Nov 26, 2018, 12:00 AM
Status
Modified
Published
Aug 14, 2019, 9:15 PM
Modified
Jun 17, 2026, 2:28 AM