Vulnerabilities > CVE-2020-9307 - Infinite Loop vulnerability in Belden Hirschmann Hios 07.0.04/08.0.00
Attack vector
ADJACENT_NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
Hirschmann OS2, RSP, and RSPE devices before HiOS 08.3.00 allow a denial of service. An unauthenticated, adjacent attacker can cause an infinite loop on one of the HSR ring ports of the device. This effectively breaks the redundancy of the HSR ring. If the attacker can perform the same attack on a second device, the ring is broken into two parts (thus disrupting communication between devices in the different parts).
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 2 |