Description
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, the free5GC UDM component fails to validate the supi path parameter in six GET handlers of the nudm-sdm (Subscriber Data Management) service. An unauthenticated attacker can inject control characters into the SUPI parameter, causing UDM to forward a malformed request to UDR and return a 500 Internal Server Error response that exposes internal infrastructure details. This vulnerability is fixed in 4.2.2.
Problem types
CWE-20: Improper Input Validation
CWE-209: Generation of Error Message Containing Sensitive Information
Product status
References
github.com/...ree5gc/security/advisories/GHSA-585v-hcgf-jhfr