A vulnerability exists in the HCI Modbus TCP function included in the product versions listed above. If the HCI Modbus TCP is en-abled and configured, an attacker could exploit the vulnerability by sending a specially crafted message to the RTU500, causing the receiving RTU500 CMU to reboot. The vulnerability is caused by the validation error in the length information carried in MBAP header in the HCI Modbus TCP function.
The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.
Name | Vendor | Start Version | End Version |
---|---|---|---|
Rtu500_firmware | Abb | 12.2.1.0 (including) | 12.2.12.0 (excluding) |
Rtu500_firmware | Hitachienergy | 12.0.1.0 (including) | 12.0.14.0 (excluding) |
Rtu500_firmware | Hitachienergy | 12.4.1.0 (including) | 12.4.12.0 (excluding) |
Rtu500_firmware | Hitachienergy | 12.6.1.0 (including) | 12.6.8.0 (excluding) |
Rtu500_firmware | Hitachienergy | 12.7.1.0 (including) | 12.7.4.0 (excluding) |
Rtu500_firmware | Hitachienergy | 13.2.1.0 (including) | 13.2.5.0 (excluding) |
Specified quantities include size, length, frequency, price, rate, number of operations, time, and others. Code may rely on specified quantities to allocate resources, perform calculations, control iteration, etc. When the quantity is not properly validated, then attackers can specify malicious quantities to cause excessive resource allocation, trigger unexpected failures, enable buffer overflows, etc.