Vulnerability-Lookup

CNVD-2025-18596

Vulnerability from cnvd - Published: 2025-08-15

Title

Open5Gs缓冲区溢出漏洞（CNVD-2025-18596）

Description

Open5Gs是一个5G Core和Epc的C语言开源实现，即Lte/Nr网络的核心网络。 Open5GS存在缓冲区溢出漏洞，攻击者可利用该漏洞导致拒绝服务。

Severity

高

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://research.nccgroup.com/2021/10/06/technical-advisory-open5gs-stack-buffer-overflow-during-pfcp-session-establishment-on-upf-cve-2021-41794/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-41794

Impacted products

Name
Open5GS Open5GS >=1.0.0，<=2.3.3

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-41794",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-41794"
    }
  },
  "description": "Open5Gs\u662f\u4e00\u4e2a5G Core\u548cEpc\u7684C\u8bed\u8a00\u5f00\u6e90\u5b9e\u73b0\uff0c\u5373Lte/Nr\u7f51\u7edc\u7684\u6838\u5fc3\u7f51\u7edc\u3002\n\nOpen5GS\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5c1a\u672a\u63d0\u4f9b\u6f0f\u6d1e\u4fee\u590d\u65b9\u6848\uff0c\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u66f4\u65b0\uff1a\r\nhttps://research.nccgroup.com/2021/10/06/technical-advisory-open5gs-stack-buffer-overflow-during-pfcp-session-establishment-on-upf-cve-2021-41794/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2025-18596",
  "openTime": "2025-08-15",
  "products": {
    "product": "Open5GS Open5GS \u003e=1.0.0\uff0c\u003c=2.3.3"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-41794",
  "serverity": "\u9ad8",
  "submitTime": "2021-10-10",
  "title": "Open5Gs\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2025-18596\uff09"
}

CVE-2021-41794 (GCVE-0-2021-41794)

Vulnerability from cvelistv5 – Published: 2021-10-07 14:57 – Updated: 2024-08-04 03:22

Summary

ogs_fqdn_parse in Open5GS 1.0.0 through 2.3.3 inappropriately trusts a client-supplied length value, leading to a buffer overflow. The attacker can send a PFCP Session Establishment Request with "internet" as the PDI Network Instance. The first character is interpreted as a length value to be used in a memcpy call. The destination buffer is only 100 bytes long on the stack. Then, 'i' gets interpreted as 105 bytes to copy from the source buffer to the destination buffer.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2261 records in the last 180 days details

References

1 reference

URL	Tags
https://research.nccgroup.com/2021/10/06/technica…	x_refsource_MISC

Show details on NVD website

JSON

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            "url": "https://research.nccgroup.com/2021/10/06/technical-advisory-open5gs-stack-buffer-overflow-during-pfcp-session-establishment-on-upf-cve-2021-41794"
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        }
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          "tags": [
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        }
      ],
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    "dateReserved": "2021-09-29T00:00:00.000Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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