CVE-2023-39351 FreeRDP Null Pointer Dereference leading denial of service

What is CVE-2023-39351?

CVE-2023-39351 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. Affected versions of FreeRDP are subject to a Null Pointer Dereference leading a crash in the RemoteFX (rfx) handling. Inside the `rfx_process_message_tileset` function, the program allocates tiles using `rfx_allocate_tiles` for the number of numTiles. If the initialization process of tiles is not completed for various reasons, tiles will have a NULL pointer. Which may be accessed in further processing and would cause a program crash. 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-476

Which versions are affected by CVE-2023-39351?

It affects 3 products.

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

How do I fix CVE-2023-39351?

Upgrade to a fixed version.

Is CVE-2023-39351 being exploited?

There is no known exploitation of CVE-2023-39351 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2023-39351, GHSA-q9x9-cqjc-rgwq, UBUNTU-CVE-2023-39351.