CVE-2023-39350 Incorrect offset calculation leading to denial of service in FreeRDP

What is CVE-2023-39350?

CVE-2023-39350 is a medium-severity vulnerability in Debian Debian Linux, published on 31 Aug 2023. 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), released under the Apache license. This issue affects Clients only. Integer underflow leading to DOS (e.g. abort due to `WINPR_ASSERT` with default compilation flags). When an insufficient blockLen is provided, and proper length validation is not performed, an Integer Underflow occurs, leading to a Denial of Service (DOS) vulnerability. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Weakness: CWE-191

Which versions are affected by CVE-2023-39350?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Freerdp Freerdp.

How do I fix CVE-2023-39350?

Upgrade to a fixed version.

Is CVE-2023-39350 being exploited?

There is no known exploitation of CVE-2023-39350 in the wild and no public exploit code.

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• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2023-39350, GHSA-rrrv-3w42-pffh, UBUNTU-CVE-2023-39350.