Number: AL24-012
Date: December 11, 2024
Audience
This Alert is intended for IT professionals and managers.
Purpose
An Alert is used to raise awareness of a recently identified cyber threat that may impact cyber information assets, and to provide additional detection and mitigation advice to recipients. The Canadian Centre for Cyber Security ("Cyber Centre") is also available to provide additional assistance regarding the content of this Alert to recipients as requested.
Details
On December 10, 2024, Cyber Centre became aware of reportsFootnote 1 detailing the active exploitation of an unrestricted file upload and download vulnerability that could lead to remote code executionFootnote 2 affecting all versions of Cleo VLTrader, Harmony, and LexiCom software.
Reporting indicates that systems running the initially released patches for this vulnerability are still exploitable.
The vulnerability (CVE-2024-50623), along with an as-yet-unassigned CVEFootnote 3, affects the following products:
- Cleo Harmony – version 5.8.0.23 and prior
- Cleo VLTrader – version 5.8.0.23 and prior
- Cleo LexiCom – version 5.8.0.23 and prior
Suggested action
The Cyber Centre strongly recommends that you review research relevant to this vulnerabilityFootnote 1, perform suggested mitigations, investigate affected systems for compromise, and monitor Cleo announcements for patchesFootnote 3.
You should also review and implement our Top 10 IT Security Actions Footnote 4 with an emphasis on the following topics:
- Patching operating systems and applications.
- Isolating Web-facing applications.
Should activity matching the content of this alert be discovered, recipients are encouraged to report via the My Cyber Portal, or email contact@cyber.gc.ca.