high
8.8
Advisory Published
Advisory Published
Updated

CVE-2019-1258: Azure Active Directory Authentication Library Elevation of Privilege Vulnerability

First published: Wed Aug 14 2019(Updated: )

An elevation of privilege vulnerability exists in Azure Active Directory Authentication Library On-Behalf-Of flow, in the way the library caches tokens, aka 'Azure Active Directory Authentication Library Elevation of Privilege Vulnerability'.

Credit: secure@microsoft.com secure@microsoft.com

Affected SoftwareAffected VersionHow to fix
Microsoft Active Directory Authentication Library>=5.0.5<5.2.0
Microsoft Active Directory Authentication Library=5.0.0-preview
Microsoft Active Directory Authentication Library=5.0.1-preview
Microsoft Active Directory Authentication Library=5.0.2-preview
Microsoft Active Directory Authentication Library=5.0.3-preview
Microsoft Nuget=5.2.0
nuget/microsoft.identitymodel.clients.activedirectory>=5.0.0<=5.1.1
5.2.0

Remedy

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

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Reference Links

Frequently Asked Questions

  • What is CVE-2019-1258?

    CVE-2019-1258 is a vulnerability in Azure Active Directory Authentication Library (ADAL) that allows an attacker to elevate their privileges.

  • What is the severity of CVE-2019-1258?

    CVE-2019-1258 has a severity rating of 8.8 (high).

  • Which software is affected by CVE-2019-1258?

    The affected software is Microsoft Active Directory Authentication Library (ADAL) versions 5.0.5 to 5.2.0 and Microsoft Nuget version 5.2.0.

  • How does CVE-2019-1258 work?

    CVE-2019-1258 exploits the way Azure Active Directory Authentication Library (ADAL) caches tokens to gain elevated privileges.

  • Is there a fix for CVE-2019-1258?

    Yes, Microsoft has released a security advisory with guidance on how to mitigate the CVE-2019-1258 vulnerability.

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