Security Resilience

CVE-2023-37014

DoS in Open5Gs ≤ 2.6.4

Public PoCDoS
Published
22 January 2025
Modified
22 April 2025
CVSS Score v3.1 7.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0078 55th percentile
Risk Priority 59 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-37014 is a high-severity Uncontrolled Resource Consumption (CWE-400) vulnerability in Open5Gs Open5Gs. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 45% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SC-5 (Denial-of-service Protection) and SC-6 (Resource Availability) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2023-37014 affects Open5GS Mobility Management Entity (MME) versions up to and including 2.6.4. The vulnerability stems from an assertion failure that can be remotely triggered by a malformed ASN.1 packet over the S1AP interface. Specifically, an attacker can send a UE Context Release Request message lacking the required MME_UE_S1AP_ID field, causing the MME process to crash.

Any remote unauthenticated attacker with network access to the S1AP interface can exploit this vulnerability. By repeatedly sending the malformed packet, the attacker can cause repeated crashes of the MME, resulting in a denial-of-service condition that disrupts core network services for user equipment context management. The CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) reflects its high availability impact with low complexity and no privileges required.

Mitigation details are available in the advisory published at https://cellularsecurity.org/ransacked.

EU & UK References

Vulnerability Data

Open5GS MME versions <= 2.6.4 contains an assertion that can be remotely triggered via a malformed ASN.1 packet over the S1AP interface. An attacker may send a `UE Context Release Request` message missing a required `MME_UE_S1AP_ID` field to repeatedly crash…

more

the MME, resulting in denial of service.

CWE(s)

Related Threats

CVEs Like This One

CVE-2024-33382Same product: Open5Gs Open5Gs
CVE-2025-52288Same product: Open5Gs Open5Gs
CVE-2023-37022Same product: Open5Gs Open5Gs
CVE-2024-57519Same product: Open5Gs Open5Gs
CVE-2025-52322Same product: Open5Gs Open5Gs
CVE-2023-50020Same product: Open5Gs Open5Gs
CVE-2024-56921Same product: Open5Gs Open5Gs
CVE-2025-63288Same product: Open5Gs Open5Gs
CVE-2023-50019Same product: Open5Gs Open5Gs
CVE-2026-8187Same product: Open5Gs Open5Gs

Affected Assets

open5gs
open5gs
≤ 2.6.4

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SC-5 directly limits the effects of resource-exhaustion events that constitute uncontrolled consumption.

SC-6 enforces explicit allocation limits on resources, structurally preventing the weakness from occurring.

Process isolation confines resource consumption to separate domains, reducing blast radius without stopping the root flaw.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

finds

Pre-agreed severity-based prioritization and resource allocation during incident triage reduce the likelihood that an attacker-induced resource exhaustion will overwhelm the organization before corrective action is taken.

finds

Early notification of anomalous resource consumption or system malfunctions enables throttling or isolation before availability is lost.

A.8.15 Logging partial match
finds

Specifying log storage limits and rotation procedures reduces the risk that unbounded log growth will exhaust disk or memory resources and cause denial of service.

finds

Resource-utilization monitoring and alerting on bottlenecks or overloads limits the impact of denial-of-service or resource-exhaustion attacks.

blocks

A.8.20 implements network-level protections (firewalls, segmentation, protocol hardening, monitoring, authentication of systems/devices) that can limit abuse of a resource-consuming weakness but do not stop the weakness from being exploitable; the flaw remains present in the product and can still be triggered from an authorized or internal context.

blocks

Monitoring network service usage and applying controls to restrict access when necessary limits an attacker’s ability to consume excessive resources through unrestricted or unauthenticated service calls.

Hardening callouts derived

DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.

  • No fine-grained STIG row for CWE-400, a class-level weakness. Rules are authored against its narrower children: CWE-770.

References