# CVE-2024-3804: Vesystem Cloud Desktop - Arbitrary File Upload

> Live exploitation tracking for CVE-2024-3804 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2024-3804

## Key facts

- **Exploitation phase:** Background Noise. Continuous low-level scanning or exploitation attempts are observed, mostly opportunistic and automated.
- **CVSS score:** 6.3
- **Public exploit available:** Yes
- **Affected products:** Vesystem Cloud Desktop
- **Weaknesses:** CWE-434 (Unrestricted Upload of File with Dangerous Type)
- **Tags:** enterprise_software

## Description

A vulnerability, which was classified as critical, has been found in Vesystem Cloud Desktop up to 20240408. This issue affects some unknown processing of the file /Public/webuploader/0.1.5/server/fileupload2.php. The manipulation of the argument file leads to unrestricted upload. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-260777 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

## CrowdSec analysis

[CVE-2024-3804](https://euvd.enisa.europa.eu/vulnerability/CVE-2024-3804) is a vulnerability impacting Vesystem Cloud Desktop, allowing remote attackers to upload files without restriction, potentially leading to further compromise.

CrowdSec has been tracking this vulnerability and its exploits since 19th of June 2024.

According to CrowdSec data, while opportunistic exploitation dominates, a portion of threat actors trying to exploit CVE-2024-3804 apply basic targeting methods such as port or service detection. This indicates emerging patterns of selective targeting.
Telemetry from the CrowdSec network also shows that exploitation activity for CVE-2024-3804 remains steady week-over-week. Attack volumes are consistent with long-term trends, indicating sustained interest from threat actors. CVE-2024-3804 continues to be an active part of the threat landscape and will likely remain this way for the forseeable future.

Observed exploitation attempts typically involve requests to URLs containing `/webuploader/0.1.5/server/preview.php`.

## Timeline

- 2024-04-15: CVE Published. CVE-2024-3804 is published to NVD.
- 2024-06-19: Rule Released. CrowdSec releases a rule to detect CVE-2024-3804 exploitation attempts against the CrowdSec Network.
- 2024-11-23: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2024-3804 for the first time.

## References

- https://vuldb.com/?id.260777
- https://vuldb.com/?submit.312318

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2024-3804) follows observed exploitation activity for CVE-2024-3804. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.