FreeRDP up to 3.5.0 WCHAR String out-of-bounds

Summaryinfo

A vulnerability marked as problematic has been reported in FreeRDP up to 3.5.0. This vulnerability affects unknown code of the component WCHAR String Handler. Performing a manipulation results in out-of-bounds. This vulnerability is known as CVE-2024-32662. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in FreeRDP up to 3.5.0. It has been classified as critical. This affects an unknown code of the component WCHAR String Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

FreeRDP is a free implementation of the Remote Desktop Protocol. FreeRDP based clients prior to version 3.5.1 are vulnerable to out-of-bounds read. This occurs when `WCHAR` string is read with twice the size it has and converted to `UTF-8`, `base64` decoded. The string is only used to compare against the redirection server certificate. Version 3.5.1 contains a patch for the issue. No known workarounds are available.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2024-32662 since 04/16/2024. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. 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 3.5.1 eliminates this vulnerability. Applying the patch 626d10a94a88565d957ddc30768ed08b320049a7 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). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Remote Access Software

Name

• FreeRDP

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5.0

License

• open-source

Website

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

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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