Ella Core Panics during NAS Authentication Response/Failure with missing IEs

Description

Summary

Ella Core panics when processing Authentication Response and Authentication Failure NAS message missing IEs.

Impact

An attacker able to send crafted NAS messages to Ella Core can crash the process, causing service disruption for all connected subscribers. No authentication is required.

Fix

Added IE presence verification to NAS message handling.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2026-03-26 22:15:54 UTC
Updated
2026-03-27 21:51:55 UTC
GitHub reviewed
2026-03-26 22:15:54 UTC
NVD published
2026-03-27

EPSS Score

Score Percentile
0.04% 11.01%

CVSS Scores

Base score Version Severity Vector
6.5 3.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.

Identifiers

CWEs

CWE id Name
CWE-476 NULL Pointer Dereference

Credits

  • offset (reporter)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
go github.com/ellanetworks/core < 1.7.0 1.7.0

References

cvelogic Threat Intelligence