Description
A security flaw has been discovered in Open5GS up to 2.7.x. Affected is the function amf_nnrf_try_old_amf_discovery_fallback of the file src/amf/nnrf-handler.c of the component Old AMF Discovery Fallback. The manipulation of the argument discovery_option results in use after free. The attack may be performed from remote. The patch is identified as ddd683a35f8aaac2b7b9884a24cd53bddfc65238. Applying a patch is advised to resolve this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Open5GS | 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7 | — |
References
- VDB-403249 | Open5GS Old AMF Discovery Fallback nnrf-handler.c amf_nnrf_try_old_amf_discovery_fallback use after free vdb-entry technical-description
- VDB-403249 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- CVE-2026-90707 | CVE Analysis and Report third-party-advisory
- Submit #918267 | Open5GS Open5GS AMF <2.8.0 CWE-416: Use After Free third-party-advisory
- https://github.com/open5gs/open5gs/pull/4698 issue-tracking patch
- https://github.com/open5gs/open5gs/commit/ddd683a35f8aaac2b7b9884a24cd53bddfc65238 patch
- https://github.com/open5gs/open5gs/ product