FreeRDP up to 2.11.5/3.4.x Legacy GDI out-of-bounds

Summaryinfo

A vulnerability classified as problematic has been found in FreeRDP up to 2.11.5/3.4.x. Affected by this issue is some unknown functionality of the component Legacy GDI Handler. This manipulation causes out-of-bounds. This vulnerability is tracked as CVE-2024-32460. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in FreeRDP up to 2.11.5/3.4.x. Affected by this vulnerability is some unknown processing of the component Legacy GDI Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

FreeRDP is a free implementation of the Remote Desktop Protocol. FreeRDP based based clients using `/bpp:32` legacy `GDI` drawing path with a version of FreeRDP prior to 3.5.0 or 2.11.6 are vulnerable to out-of-bounds read. Versions 3.5.0 and 2.11.6 patch the issue. As a workaround, use modern drawing paths (e.g. `/rfx` or `/gfx` options). The workaround requires server side support.

The advisory is shared at github.com. This vulnerability is known as CVE-2024-32460 since 04/12/2024. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 211551 (Oracle Linux 9 : freerdp (ELSA-2024-9092)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.11.6 or 3.5.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (211551). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Remote Access Software

Name

• FreeRDP

Version

• 2.11.0
• 2.11.1
• 2.11.2
• 2.11.3
• 2.11.4
• 2.11.5
• 3.0
• 3.1
• 3.2
• 3.3
• 3.4

License

• open-source

Website

• Product: https://github.com/FreeRDP/FreeRDP/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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