CVE-2022-24883 FreeRDP Server authentication might allow invalid credentials to pass

What is CVE-2022-24883?

CVE-2022-24883 is a high-severity authentication bypass vulnerability in Fedoraproject Fedora, published on 26 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-287

Which versions are affected by CVE-2022-24883?

It affects 2 products.

Products include Fedoraproject Fedora, Freerdp Freerdp.

How do I fix CVE-2022-24883?

Upgrade to a fixed version.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2022-24883 being exploited?

There is no known exploitation of CVE-2022-24883 in the wild and no public exploit code.

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All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as CLSA-2026-1778146905, DEBIAN-CVE-2022-24883, GHSA-qxm3-v2r6-vmwf, UBUNTU-CVE-2022-24883.