Vulnerability in Open5GS MME (CVE-2023-37023)

Summary

Vulnerability in Open5GS MME (CVE-2023-37023). Risk of unauthorized operations or information disclosure. Exploitable via MME_UE_S1AP_ID.

Original description

The description as published by the source.

Open5GS MME versions <= 2.6.4 contain a reachable assertion in the Uplink NAS Transport packet handler. A packet missing its MME_UE_S1AP_ID field causes Open5gs to crash; an attacker may repeatedly send such packets to cause denial of service.

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2023-37023 has been found in Open5GS MME.
Attackers can target a specific entry point like MME_UE_S1AP_ID over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Open5GS MME CVE-2023-37023" on the vendor's site.

CVE-2023-37023 (Open5GS MME)
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: MME_UE_S1AP_ID
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (unclassified) exists in Open5GS MME. Attackers reach the vulnerable code path via MME_UE_S1AP_ID without authentication.

📍 Affected scope

Check the vendor advisory for the affected versions of Open5GS MME. Attack surface: MME_UE_S1AP_ID.

🔥 Severity

Severity: ?. Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to the patched release per vendor advisory.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
Audit SBOM/dependencies for affected components.
```
資産台帳・SBOM・依存マニフェストで Open5GS MME を使っているサービスとバージョンを洗い出す。
2
Post-deployment verification verify
```
Confirm patched version is live in production
```
パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Summary

Original description

Auto-generated summary

Response actions

References