Microsoft Windows up to Server 2019 Remote Desktop Protocol information disclosure

Summaryinfo

A vulnerability was found in Microsoft Windows up to Server 2019. It has been classified as problematic. Affected is an unknown function of the component Remote Desktop Protocol. This manipulation causes information disclosure. This vulnerability appears as CVE-2019-1224. The attack may be initiated remotely. There is no available exploit. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability has been found in Microsoft Windows up to Server 2019 (Operating System) and classified as problematic. Affected by this vulnerability is an unknown code block of the component Remote Desktop Protocol. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

An information disclosure vulnerability exists when the Windows RDP server improperly discloses the contents of its memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the system. To exploit this vulnerability, an attacker would have to connect remotely to an affected system and run a specially crafted application. The security update addresses the vulnerability by correcting how the Windows RDP server initializes memory.

The weakness was presented 08/13/2019 as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. The public release was coordinated in cooperation with Microsoft. This vulnerability is known as CVE-2019-1224 since 11/26/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/21/2026). The attack technique deployed by this issue is T1592 according to MITRE ATT&CK. The advisory points out:

An information disclosure vulnerability exists when the Windows RDP server improperly discloses the contents of its memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the system.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

See VDB-139964, VDB-139966, VDB-139965 and VDB-139962 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Microsoft

Name

• Windows

Version

• 10 1803
• 10 1809
• 10 1903
• Server 1803
• Server 1903
• Server 2019

License

• commercial

Website

• Vendor: https://www.microsoft.com/
• Product: https://www.microsoft.com/en-us/windows

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