Xrdp is an open source project which provides a graphical login to remote machines using Microsoft Remote Desktop Protocol (RDP). There are no known workarounds for this issue. xrdp < v0.9.21 contain a Out of Bound Read in xrdp_mm_trans_process_drdynvc_channel_close() function. This vulnerability has been patched in version 0.9.18.1 and above. In affected versions an integer underflow leading to a heap overflow in the sesman server allows any unauthenticated attacker which is able to locally access a sesman server to execute code as root. Xrdp is an open source remote desktop protocol (RDP) server. There are currently no known workarounds. The vulnerability is patched in FreeRDP 2.7.0.

This issue affects FreeRDP based RDP Server implementations. In versions prior to 2.7.0, NT LAN Manager (NTLM) authentication does not properly abort when someone provides and empty password value. As a workaround, use custom authentication via `HashCallback` and/or ensure the `SAM` database path configured is valid and the application has file handles left.įreeRDP is a free implementation of the Remote Desktop Protocol (RDP). Version 2.7.0 contains a fix for this issue. RDP server implementations using FreeRDP to authenticate against a `SAM` file are affected. Prior to version 2.7.0, server side authentication against a `SAM` file might be successful for invalid credentials if the server has configured an invalid `SAM` file path. A successful exploit could allow the attacker to gain unauthorized access to the affected device.įreeRDP is a free implementation of the Remote Desktop Protocol (RDP). An attacker could exploit this vulnerability by replaying previously used multifactor authentication (MFA) codes to bypass MFA protection. This vulnerability exists because session credentials do not properly expire. A vulnerability in the offline access mode of Cisco Duo Two-Factor Authentication for macOS and Duo Authentication for Windows Logon and RDP could allow an unauthenticated, physical attacker to replay valid user session credentials and gain unauthorized access to an affected macOS or Windows device.

Rdp manager 2.7 download