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Vulnerability DatabaseCVE-2022-39319
CVE-2022-39319:
NixOS vulnerability analysis and mitigation
Overview
CVE-2022-39319 affects FreeRDP, a free implementation of the Remote Desktop Protocol (RDP). The vulnerability was discovered in versions <= 2.8.1 and involves missing input length validation in the urbdrc channel. The issue was patched in version 2.9.0 (GitHub Advisory).
Technical details
The vulnerability stems from missing input length validation in the urbdrc (USB Redirection Virtual Channel) channel. The issue was fixed by adding input buffer length checks to prevent out-of-bounds data access. The fix included adding validation for OutputBufferSize and implementing Stream_CheckAndLogRequiredLength checks for data transfer operations (FreeRDP Commit).
Impact
A malicious server can exploit this vulnerability to trick a FreeRDP-based client into reading out-of-bounds data and sending it back to the server, potentially leading to information disclosure (GitHub Advisory, Red Hat Advisory).
Mitigation and workarounds
The primary mitigation is to upgrade to FreeRDP version 2.9.0 or later which contains the fix. If unable to upgrade, users can avoid using the /usb redirection switch as a workaround (GitHub Advisory).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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