Description
A security flaw has been discovered in Open5GS up to 2.7.6. Impacted is the function smf_gx_cca_cb of the component SMF Diameter Gx Credit-Control-Answer Handler. The manipulation results in denial of service. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 2.7.7 is recommended to address this issue. The patch is identified as f23d7a5e959acd8f37b925dc29b85f26b7d391cb. Upgrading the affected component is advised.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Open5GS | 2.7.0, 2.7.1, 2.7.2, 2.7.3, 2.7.4, 2.7.5, 2.7.6 | 2.7.7 |
References
- VDB-387283 | Open5GS SMF Diameter Gx Credit-Control-Answer smf_gx_cca_cb denial of service vdb-entry technical-description
- VDB-387283 | CTI Indicators (IOB, IOC, TTP, IOA) signature permissions-required
- CVE-2025-15687 | CVE Analysis and Report third-party-advisory
- Submit #867119 | Open5GS v2.7.5 Denial of Service third-party-advisory
- https://github.com/open5gs/open5gs/issues/4027 issue-tracking
- https://github.com/open5gs/open5gs/pull/4034 issue-tracking patch
- https://github.com/user-attachments/files/21515527/SMF.crashes.zip exploit
- https://github.com/open5gs/open5gs/commit/f23d7a5e959acd8f37b925dc29b85f26b7d391cb patch
- https://github.com/open5gs/open5gs/releases/tag/v2.7.7 patch
- https://github.com/open5gs/open5gs/ product