Horizon Alert
Summary of the vulnerability and why it matters
Certain Cleo products contain a vulnerability that allows unrestricted file uploads and downloads. This flaw could enable attackers to execute malicious code on affected systems. The potential impact includes unauthorized access and control over business systems and data.
- Vulnerable Cleo products
- Unrestricted file upload/download
- Remote code execution and system control
Attack Path
How an attacker could exploit the issue
This vulnerability allows an attacker to execute arbitrary code on a target system. The attack begins with an organization's exposure of specific Cleo products to the internet. An attacker can then leverage this network access to upload a malicious file. This action results in the attacker gaining control over the affected system.
- External network exposure.
- Attacker uploads malicious file.
- Remote code execution achieved.
Live Threat
Current exploitation, exposure, and threat context
An unrestricted file upload and download vulnerability in Cleo Harmony, VLTrader, and LexiCom products could allow attackers to execute code remotely. This could impact systems by allowing unauthorized code execution, potentially leading to data compromise or denial of service. The exploitability of this vulnerability is considered high, posing a significant risk to organizations using the affected products.
- Likely attacker skill level: No specific skill required.
- Required access or conditions: Network access is sufficient.
- Business risk or urgency: High risk, treat as urgent.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
The organization's managed file transfer products, Cleo Harmony, VLTrader, and LexiCom, contain a critical vulnerability that could permit remote code execution. This vulnerability arises from an unrestricted file upload and download capability. The potential impact includes unauthorized code execution, which could compromise system integrity and data confidentiality. This issue has been observed in a known ransomware campaign, indicating active exploitation.
- Find affected product assets.
- Reduce exposure or isolate risk.
- Fix, verify, and monitor.
