Executive brief
O-RAN-SC SMO OAM's VES Collector is a network management component that processes heartbeat and event messages from radio access equipment. An attacker can send specially crafted messages with excessively large padding fields to trigger uncontrolled memory allocation, causing the service to become unresponsive or crash, disrupting radio network monitoring and management.
Technical details
The vulnerability is a denial-of-service issue (CWE-789: Uncontrolled Allocation of Resources with External Input) in the VES Collector component of O-RAN-SC SMO OAM. The root cause is insufficient validation of the `additionalFields.padding` parameter in heartbeat event messages, allowing an attacker to inject arbitrarily large string values. A remote attacker can send HTTP POST requests to the VES event listener endpoint with increasingly large payloads to exhaust heap memory, causing the application to hang or crash. The attack requires network access to port 8080 but no authentication. Proof-of-concept code demonstrating the attack has been publicly disclosed. Patch status is unknown as the project has not yet responded to the bug report.
Affected products
- O-RAN-SC SMO OAM 2025-06-10
Timeline
- 2026-09-17: disclosed: Vulnerability disclosed publicly; proof-of-concept code published on GitHub
- 2026-06-10: other: Vulnerability discovered and reported to O-RAN-SC; project has not responded