ABB Cylon FLXeon 9.3.4 (cert.js) System Logs Information Disclosure
Title: ABB Cylon FLXeon 9.3.4 (cert.js) System Logs Information Disclosure
Advisory ID: ZSL-2025-5920
Type: Local/Remote
Impact: Exposure of System Information, Exposure of Sensitive Information
Risk: (4/5)
Release Date: 13.02.2025
The FLXeon Controller Series uses BACnet/IP standards to deliver unprecedented connectivity and open integration for your building automation systems. It's scalable, and modular, allowing you to control a diverse range of HVAC functions.
CBX Series (FLX Series)
CBT Series
CBV Series
Firmware: <=9.3.4
Linux Kernel 4.15.13
NodeJS/8.4.0
Express
[22.04.2024] Vendor contacted.
[22.04.2024] Vendor responds.
[02.05.2024] Working with the vendor.
[20.01.2025] Vendor releases version 9.3.5 to address this issue.
[13.02.2025] Public security advisory released.
[2] https://www.cve.org/CVERecord?id=CVE-2024-48852
[3] https://packetstorm.news/files/id/189231/
[4] https://www.cisa.gov/news-events/ics-advisories/icsa-25-051-02
[21.02.2025] - Added reference [4]
Web: https://www.zeroscience.mk
e-mail: lab@zeroscience.mk
Advisory ID: ZSL-2025-5920
Type: Local/Remote
Impact: Exposure of System Information, Exposure of Sensitive Information
Risk: (4/5)
Release Date: 13.02.2025
Summary
BACnet® Smart Building Controllers. ABB's BACnet portfolio features a series of BACnet® IP and BACnet MS/TP field controllers for ASPECT® and INTEGRA™ building management solutions. ABB BACnet controllers are designed for intelligent control of HVAC equipment such as central plant, boilers, chillers, cooling towers, heat pump systems, air handling units (constant volume, variable air volume, and multi-zone), rooftop units, electrical systems such as lighting control, variable frequency drives and metering.The FLXeon Controller Series uses BACnet/IP standards to deliver unprecedented connectivity and open integration for your building automation systems. It's scalable, and modular, allowing you to control a diverse range of HVAC functions.
Description
An authenticated attacker can access sensitive information via the system logs page of ABB Cylon FLXeon controllers. The logs expose critical data, including the OpenSSL password for stored certificates. This information can be leveraged for further attacks, such as decrypting encrypted communications, impersonation, or gaining deeper system access.Vendor
ABB Ltd. - https://www.global.abbAffected Version
FLXeon Series (FBXi Series, FBTi Series, FBVi Series)CBX Series (FLX Series)
CBT Series
CBV Series
Firmware: <=9.3.4
Tested On
Linux Kernel 5.4.27Linux Kernel 4.15.13
NodeJS/8.4.0
Express
Vendor Status
[21.04.2024] Vulnerability discovered.[22.04.2024] Vendor contacted.
[22.04.2024] Vendor responds.
[02.05.2024] Working with the vendor.
[20.01.2025] Vendor releases version 9.3.5 to address this issue.
[13.02.2025] Public security advisory released.
PoC
abb_flxeon_log1.txtCredits
Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>References
[1] https://search.abb.com/library/Download.aspx?DocumentID=9AKK108470A5684&LanguageCode=en&DocumentPartId=PDF&Action=Launch[2] https://www.cve.org/CVERecord?id=CVE-2024-48852
[3] https://packetstorm.news/files/id/189231/
[4] https://www.cisa.gov/news-events/ics-advisories/icsa-25-051-02
Changelog
[13.02.2025] - Initial release[21.02.2025] - Added reference [4]
Contact
Zero Science LabWeb: https://www.zeroscience.mk
e-mail: lab@zeroscience.mk
