Critical Security Flaw in FreeRDP: Heap Buffer Overflows and Use-After-Free Vulnerabilities
Summary
RLSA-2026:6799: Important: freerdp security update. Affects freerdp versions < 2:3.10.3-5.el10_1.5. Fixed in 2:3.10.3-5.el10_1.5. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
FreeRDP is an open-source implementation of the Remote Desktop Protocol (RDP), allowing users to connect to remote servers and desktops, including Microsoft Windows machines and VirtualBox. It is widely used for remote access and management of systems. However, recent vulnerabilities have been identified that could compromise the security of systems utilizing FreeRDP, making it essential for users to be aware and take action.
Vulnerability Detail
The vulnerabilities in FreeRDP include multiple heap buffer overflows and use-after-free errors, which can lead to arbitrary code execution, denial of service, and potential data breaches. These vulnerabilities arise from improper memory management within the FreeRDP codebase, particularly in handling RDP server messages and audio formats. Attackers could exploit these weaknesses by sending crafted messages to a vulnerable FreeRDP client, leading to severe consequences for affected systems.
How To Fix
Minimum fixed version
2:3.10.3-5.el10_1.5
This is the first release that contains the fix.
sudo dnf update freerdpTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users can limit access to the FreeRDP client or avoid connecting to untrusted RDP servers until the update is applied. Additionally, disabling certain features that may be exploited could provide a short-term solution.
Conclusion
The vulnerabilities in FreeRDP pose significant risks to users, with potential for arbitrary code execution and denial of service. It is crucial for users to update to the latest patched version to mitigate these risks. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.
See every vulnerability recorded for freerdp →
FAQ
FreeRDP is an open-source implementation of the Remote Desktop Protocol (RDP), allowing users to connect to remote desktops and servers.
The vulnerabilities include heap buffer overflows and use-after-free errors, which can lead to arbitrary code execution and denial of service.
You can use Vulert, which monitors open-source vulnerabilities in your software. Simply upload your manifest file like package-lock.json to check for vulnerabilities.
The CVSS score for the vulnerabilities in FreeRDP is 8.8, indicating a high severity level.
You can update FreeRDP by running the command 'sudo dnf update freerdp' in your terminal.
References
Related vulnerabilities
Recent vulnerabilities recorded for freerdp.
