Vulnerability-Lookup

GHSA-84XH-PWC6-7G4G

Vulnerability from github – Published: 2025-02-05 18:34 – Updated: 2026-01-27 15:30

Details

When multiple server blocks are configured to share the same IP address and port, an attacker can use session resumption to bypass client certificate authentication requirements on these servers. This vulnerability arises when TLS Session Tickets https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_ticket_key are used and/or the SSL session cache https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_cache are used in the default server and the default server is performing client certificate authentication.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Severity

4.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

5.3 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2025-23419"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-287",
      "CWE-613",
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-05T18:15:33Z",
    "severity": "MODERATE"
  },
  "details": "When multiple server blocks are configured to share the same IP address and port, an attacker can use session resumption to bypass client certificate authentication requirements on these servers. This vulnerability arises when  TLS Session Tickets https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_ticket_key  are used and/or the  SSL session cache https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_cache  are used in the default server and the default server is performing client certificate authentication.\u00a0\u00a0\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
  "id": "GHSA-84xh-pwc6-7g4g",
  "modified": "2026-01-27T15:30:26Z",
  "published": "2025-02-05T18:34:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-23419"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00017.html"
    },
    {
      "type": "WEB",
      "url": "https://my.f5.com/manage/s/article/K000149173"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/02/05/8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2025-23419 (GCVE-0-2025-23419)

Vulnerability from cvelistv5 – Published: 2025-02-05 17:31 – Updated: 2026-01-23 20:09

Title

TLS Session Resumption Vulnerability

Summary

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-05 18:12 UTC

CWE

CWE-863 - Incorrect Authorization

Assigner

f5 mitre root

References

3 references

URL	Tags
https://my.f5.com/manage/s/article/K000149173	vendor-advisory
http://www.openwall.com/lists/oss-security/2025/02/05/8
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
F5	NGINX Open Source	Affected: 1.11.4 , < * (semver)
F5	NGINX Plus	Affected: R17 , < * (custom)

Date Public

2025-02-05 15:00

Credits

Sven Hebrok Felix Cramer Tim Storm Maximilian Radoy Juraj Somorovsky

Show details on NVD website

JSON

To clipboard

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          },
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            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00017.html"
          }
        ],
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                  }
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                "role": "CISA Coordinator",
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                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2025-02-12T19:41:06.184Z",
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        },
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          "product": "NGINX Open Source",
          "vendor": "F5",
          "versions": [
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              "changes": [
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                  "status": "unaffected"
                },
                {
                  "at": "1.26.3",
                  "status": "unaffected"
                }
              ],
              "lessThan": "*",
              "status": "affected",
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              "versionType": "semver"
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      "metrics": [
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            "attackComplexity": "LOW",
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            "attackComplexity": "LOW",
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            "baseSeverity": "MEDIUM",
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            "vulnAvailabilityImpact": "NONE",
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            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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          "descriptions": [
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              "lang": "en",
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  },
  "dataType": "CVE_RECORD",
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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.

Detection rules are retrieved from Rulezet.

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

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.