CVE-2024-56921

Name of the Vulnerable Software and Affected Versions Open5gs version 2.7.2

Description A problem was discovered in Open5gs where the InitialUEMessage, a registration request sent at a specific time, can cause AMF to crash due to incorrect error handling of the gmm state exception() function when receiving the Nausf UEAuthentication Authenticate response.

Recommendations For Open5gs version 2.7.2, consider disabling the gmm state exception() function temporarily as a workaround until a patch is available. Restrict access to the InitialUEMessage registration request to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.