Reachable Assertion vulnerability in Open5GS up to version 2.7.5 allows attackers with connectivity to the NRF to cause a denial of service. An SBI request that deletes the NRFs own registry causes a check that ends up crashing the NRF process and renders the discovery service unavailable.
The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Open5gs | Open5gs | * | 2.7.5 (excluding) |
While assertion is good for catching logic errors and reducing the chances of reaching more serious vulnerability conditions, it can still lead to a denial of service. For example, if a server handles multiple simultaneous connections, and an assert() occurs in one single connection that causes all other connections to be dropped, this is a reachable assertion that leads to a denial of service.