CVE-2024-55956: Cleo Multiple Products Unauthenticated File Upload Vulnerability

CISA Known Exploited Vulnerability (KEV)

Description

Cleo Harmony, VLTrader, and LexiCom, which are managed file transfer products, contain an unrestricted file upload vulnerability that could allow an unauthenticated user to import and execute arbitrary bash or PowerShell commands on the host system by leveraging the default settings of the Autorun directory.

Required action (CISA)

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Notes

https://support.cleo.com/hc/en-us/articles/28408134019735-Cleo-Product-Security-Update-CVE-2024-55956 ; https://nvd.nist.gov/vuln/detail/CVE-2024-55956

Weakness behind it

CISA records this vulnerability as an instance of CWE-276. From there the chain continues into CAPEC attack patterns and ATT&CK techniques, all inside this corpus.

References

• NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-55956
• KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog