Alert - Vulnerability impacting all versions of Cleo VLTrader, Harmony, and LexiCom software

Audience

This Alert is intended for IT professionals and managers.

Purpose

An Alert is used to raise awareness of a recently identified cyber threat Cyber threatA threat actor, using the internet, who takes advantage of a known vulnerability in a product for the purposes of exploiting a network and the information the network carries. that may impact cyber information assets, and to provide additional detection DetectionThe monitoring and analyzing of system events in order to identify unauthorized attempts to access system resources. and mitigation advice to recipients. The Canadian Centre for Cyber Security Cyber securityThe protection of digital information, as well as the integrity of the infrastructure housing and transmitting digital information. More specifically, cyber security includes the body of technologies, processes, practices and response and mitigation measures designed to protect networks, computers, programs and data from attack, damage or unauthorized access so as to ensure confidentiality, integrity and availability. ("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 reports^{Footnote 1} detailing the active exploitation of an unrestricted file upload and download vulnerability VulnerabilityA flaw or weakness in the design or implementation of an information system or its environment that could be exploited to adversely affect an organization's assets or operations. that could lead to remote code execution^{Footnote 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 CVE^{Footnote 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 vulnerability^{Footnote 1}, perform suggested mitigations, investigate affected systems for compromise CompromiseThe intentional or unintentional disclosure of information, which adversely impacts its confidentiality, integrity, or availability. , and monitor Cleo announcements for patches^{Footnote 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.