# CVE-2017-0043: Microsoft Active Directory Federation Services Information Disclosure CVE-2017-0043 is fixed in 11 products on 1 platform, first by KB4013429, released March 14, 2017. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2017-0043 - Priority: Routine - CVSS: 4.8 (Important) - EPSS: 0.0206 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation Unlikely - Published: Mar 14, 2017 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-0043 ## Description

An information disclosure vulnerability exists when Windows Active Directory Federation Services (ADFS) honors XML External Entities. An authenticated attacker who successfully exploited this vulnerability would be able to read sensitive information about the target system.

To exploit this condition, an authenticated attacker would need to send a specially crafted request to the ADFS service. Note that the information disclosure vulnerability by itself would not be sufficient for an attacker to compromise a system. However, an attacker could combine this vulnerability with additional vulnerabilities to further exploit the system.

The update addresses the vulnerability by causing ADFS to ignore these malicious entities.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4012215](https://patchblox.com/security/data/fix/microsoft/kb4012215.md) | Mar 14, 2017 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4012212](https://patchblox.com/security/data/fix/microsoft/kb4012212.md) | Mar 14, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4012215](https://patchblox.com/security/data/fix/microsoft/kb4012215.md) | Mar 14, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4012212](https://patchblox.com/security/data/fix/microsoft/kb4012212.md) | Mar 14, 2017 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB3217882](https://patchblox.com/security/data/fix/microsoft/kb3217882.md) | Mar 14, 2017 | | Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB3217882](https://patchblox.com/security/data/fix/microsoft/kb3217882.md) | Mar 14, 2017 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB3217882](https://patchblox.com/security/data/fix/microsoft/kb3217882.md) | Mar 14, 2017 | | Microsoft | Windows Server 2012 | | [KB4012217](https://patchblox.com/security/data/fix/microsoft/kb4012217.md) | Mar 14, 2017 | | Microsoft | Windows Server 2012 | | [KB4012214](https://patchblox.com/security/data/fix/microsoft/kb4012214.md) | Mar 14, 2017 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4012217](https://patchblox.com/security/data/fix/microsoft/kb4012217.md) | Mar 14, 2017 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4012214](https://patchblox.com/security/data/fix/microsoft/kb4012214.md) | Mar 14, 2017 | | Microsoft | Windows Server 2012 R2 | | [KB4012213](https://patchblox.com/security/data/fix/microsoft/kb4012213.md) | Mar 14, 2017 | | Microsoft | Windows Server 2012 R2 | | [KB4012216](https://patchblox.com/security/data/fix/microsoft/kb4012216.md) | Mar 14, 2017 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4012213](https://patchblox.com/security/data/fix/microsoft/kb4012213.md) | Mar 14, 2017 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4012216](https://patchblox.com/security/data/fix/microsoft/kb4012216.md) | Mar 14, 2017 | | Microsoft | Windows Server 2016 | 14393.953 | [KB4013429](https://patchblox.com/security/data/fix/microsoft/kb4013429.md) | Mar 14, 2017 | | Microsoft | Windows Server 2016 (Server Core installation) | 14393.953 | [KB4013429](https://patchblox.com/security/data/fix/microsoft/kb4013429.md) | Mar 14, 2017 | --- Data as of 2026-11-07T12:40:37Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo