FreeRDP up to 2.8.x Drive Channel memory corruption

Summaryinfo

A vulnerability marked as critical has been reported in FreeRDP up to 2.8.x. Affected by this issue is some unknown functionality of the component Drive Channel Handler. Performing a manipulation results in memory corruption. This vulnerability is cataloged as CVE-2022-41877. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in FreeRDP up to 2.8.x. It has been classified as critical. This affects an unknown code of the component Drive Channel Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP are missing input length validation in `drive` channel. A malicious server can trick a FreeRDP based client to read out of bound data and send it back to the server. This issue has been addressed in version 2.9.0 and all users are advised to upgrade. Users unable to upgrade should not use the drive redirection channel - command line options `/drive`, `+drives` or `+home-drive`.

The weakness was shared 11/17/2022 as GHSA-pmv3-wpw4-pw5h. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2022-41877 since 09/30/2022. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 211437 (Fedora 37 : freerdp (2022-076b1c9978)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.9.0 eliminates this vulnerability. Applying the patch 6655841cf2a00b764f855040aecb8803cfc5eaba 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 databases at Tenable (211437) and CERT Bund (WID-SEC-2023-1185). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

• Debian Linux
• Amazon Linux 2
• Red Hat Enterprise Linux
• Fedora Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• Gentoo Linux
• SUSE openSUSE
• Red Hat OpenShift
• RESF Rocky Linux

Productinfo

Type

• Remote Access Software

Name

• FreeRDP

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8

License

• open-source

Website

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

CPE 2.3info

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CPE 2.2info

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