Signal Handler Race Condition vulnerability in Mitsubishi Electric India GC-ENET-COM whose first 2 digits of 11-digit serial number of unit are "16" allows a remote unauthenticated attacker to cause a denial-of-service (DoS) condition in Ethernet communication by sending a large number of specially crafted packets to any UDP port when GC-ENET-COM is configured as a Modbus TCP Server. The communication resumes only when the power of the main unit is turned off and on or when the GC-ENET-COM is hot-swapped from the main unit.
The product uses a signal handler that introduces a race condition.
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
| Link | Tags |
|---|---|
| https://mitsubishielectric.in/fa/cnc-pdf/DoS_in_Ethernet_Communication_Extension_Unit_GC_ENET_COM_of_GOC35_Series.pdf | vendor advisory |
| https://www.cisa.gov/news-events/ics-advisories/icsa-23-103-15 | government resource third party advisory us government resource |