Denial of Service Vulnerability in Open5GS MME by Open5GS
CVE-2023-37021

8.6HIGH

Key Information:

Vendor

Open5GS

Status
Open5GS MME
Vendor
CVE Published:
22 January 2025

What is CVE-2023-37021?

Open5GS MME versions 2.6.4 and earlier exhibit a vulnerability that can be exploited through malformed ASN.1 packets sent over the S1AP interface. By manipulating the communication protocol with a UE Context Modification Failure message that omits the MME_UE_S1AP_ID field, an attacker can trigger repeated crashes of the MME. This results in service disruption, potentially affecting network availability and performance.

References

https://cellularsecurity.org/ransacked

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2023-37021 : Denial of Service Vulnerability in Open5GS MME by Open5GS