free5GC has Improper Error Handling in UDM, Leading to Information Exposure

free5gc UDM provides Unified Data Management (UDM) for free5GC, an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.1, the service reliably leaks detailed internal error messages (e.g., strconv.ParseInt parsing errors) to remote clients when processing invalid pduSessionId inputs. This exposes implementation details and can be used for service fingerprinting. All deployments of free5GC using the UDM Nudm_UECM DELETE service may be vulnerable. free5gc/udm pull request 76 contains a fix for the issue. No direct workaround is available at the application level. Applying the official patch is recommended.

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对因果或异常条件的不恰当检查

free5GC 代码问题漏洞

free5GC是free5GC开源的一个第 5 代 (5G) 移动核心网络的开源项目。 free5GC 1.4.1及之前版本存在代码问题漏洞，该漏洞源于处理无效pduSessionId输入时可靠地泄露详细内部错误消息，可能暴露实现细节并用于服务指纹识别。

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