Ella Core is a 5G core designed for private networks. Versions prior to 1.7.0 panic when processing a specially crafted NGAP LocationReport message. An attacker able to send crafted NGAP messages to Ella Core can crash the process, causing service disruption for all connected subscribers.
Version 1.7.0 adds guards in NGAP Location Report handler.
Attack Parameters
Attack Vector
Adjacent
Requires local network access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 3
https://github.com/ellanetworks/core/commit/ec77a2ad4508f8488cb356fd45b2f1efd92…
security-advisories@github.com
https://github.com/ellanetworks/core/releases/tag/v1.7.0
security-advisories@github.com
https://github.com/ellanetworks/core/security/advisories/GHSA-f2f3-9cx3-wcmf
security-advisories@github.com