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"
    }
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  "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

References

URL

Tags

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

x_refsource_MISC

Show details on NVD website

JSON

To clipboard Create KEV Entry

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Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

CNVD-2025-18596

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

Tags

Sightings

Nomenclature