CVE-2023-39351
MediumCVSS 5.3Exploitation Probability (EPSS)
Elevated risk67th percentile - higher than 67% of all known CVEs
Summary
FreeRDP, a free implementation of the RDP protocol, has a vulnerability due to a Null Pointer Dereference leading to a crash in RemoteFX handling. The issue occurs in the `rfx_process_message_tileset` function, where improper memory allocation for tiles may result in accessing a NULL pointer.
Risk Assessment
This vulnerability may lead to application crashes, affecting the availability of remote desktop services. If exploited by an attacker, it could result in service interruptions.
Recommendation
It is recommended to upgrade to versions 2.11.0 or 3.0.0-beta3 to mitigate this vulnerability. There are no known workarounds for this issue.
Original NVD description (English source)
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.