Active Directory Federation Services (AD FS) Spoofing Vulnerability

Source data

Overview

Improper certificate validation in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

Impact & technical details

Spoofing

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires an attacker to have a deep understanding of the system. Successful exploitation is not guaranteed and depends on a combination of factors that might include the environment, system configuration, and the presence of additional security measures.

CVSS base score

7.4 / 10

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C

Highest base score supplied by MSRC for this record; the vector belongs to that score. Ratings can vary by product. Microsoft Important is displayed as High; Moderate is displayed as Medium.

Affected products

• Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 version 1607
• Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016
• Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2019
• Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 version 1809
• Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 version 1809
• Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 version 21H2
• Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 version 22H2
• Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019

Source guidance

Remediation

• Release Notes

At least one Microsoft vendor-fix reference is available. Check each affected product for its applicable update, prerequisites, and supported version.

Authoritative sources & updates

Findings and update information come from the linked publishers. GTP compiles the public record and provides the recommendation above. CVSS ratings shown here come from Microsoft. NVD references provide additional public context.

• Microsoft Security Response Center (opens in a new tab)
• Microsoft security update · 5126651 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5126655 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5126646 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5126868 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5126836 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · Release Notes (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · Release Notes (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127689 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127690 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127691 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127692 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127693 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127694 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127696 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127660 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127664 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5126868 (opens in a new tab)
• Microsoft security update · 5127666 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127685 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127683 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127687 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127667 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127668 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127684 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127686 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5127688 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)