En resumen
- CVE-2026-44473 es una vulnerabilidad ALTO (CVSS 7.1) que afecta a github.com/ellanetworks/core.
- Probabilidad de explotación en los próximos 30 días (EPSS): 0.17%, mayor que el 5.8% de las vulnerabilidades.
- Solución: actualizar a 1.10.0 o posterior.
Description
Summary
A radio with a valid NG Setup can send a forged PDUSessionResourceSetupResponse carrying any UE's AMF-UE-NGAP-ID. Ella Core does not verify the message arrived on the SCTP association bound to that UE's logical NG-connection, then creates a GTP tunnel towards that radio.
Impact
Downlink user-plane traffic for the targeted UE is redirected to the attacker's radio.
Fix
UE context lookups are now scoped to the sending radio's SCTP association.
NVD description
Ella Core is a 5G core designed for private networks. Prior to 1.10.0, a radio with a valid NG Setup can send a forged PDUSessionResourceSetupResponse carrying any UE's AMF-UE-NGAP-ID. Ella Core does not verify the message arrived on the SCTP association bound to that UE's logical NG-connection, then creates a GTP tunnel towards that radio. This vulnerability is fixed in 1.10.0.
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