CVE-2019-1258

Azure Active Directory Authentication Library Elevation of Privilege 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.

8.8

CVSS

Severity: High

CVSS 3.0 •

CVSS 2.0 •

EPSS 11.14% Top 10%

Vendor Advisory microsoft.com

Affected: Microsoft ADAL.NET

Affected: Microsoft Nuget 5.2.0

References

Link	Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1258	patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-1258?: CVE-2019-1258 has been scored as a high severity vulnerability.
How to fix CVE-2019-1258?: To fix CVE-2019-1258, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-1258 being actively exploited in the wild?: It is possible that CVE-2019-1258 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~11% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-1258?: CVE-2019-1258 affects Microsoft ADAL.NET, Microsoft Nuget 5.2.0.

This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.