Auth bypass in Freerdp

CVE-2022-24883

FreeRDP is a free implementation of the Remote Desktop Protocol (RDP). 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. FreeRDP based clients are not affected. RDP server implementations using FreeRDP to authenticate against a `SAM` file are affected. Version 2.7.0 contains a fix for this issue. 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.

Vulnerability class: Broken Authentication

EPSS: 0.023 (81.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2022-24883?
CVE-2022-24883 is a high-severity vulnerability in Freerdp, classified under Improper Authentication. CVSS score: 7.4/10. Published 2022-04-26.
How severe is CVE-2022-24883?
High severity. CVSS v3 base score is 7.4 out of 10.