FKIE_CVE-2025-23419

Vulnerability from fkie_nvd - Published: 2025-02-05 18:15 - Updated: 2025-11-12 14:50
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Summary
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.
References
f5sirt@f5.comhttps://my.f5.com/manage/s/article/K000149173Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2025/02/05/8Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/03/msg00017.htmlIssue Tracking, Third Party Advisory
Impacted products
Vendor Product Version
f5 nginx *
f5 nginx *
f5 nginx_plus *
f5 nginx_plus r32
f5 nginx_plus r32
f5 nginx_plus r33
f5 nginx_plus r33
debian debian_linux 11.0
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "90E7462C-FF90-4463-BB1C-8B9BC94FFA54",
              "versionEndExcluding": "1.26.3",
              "versionStartIncluding": "1.11.4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "34709BDE-C5EF-4D44-8BDC-0791B6A15E5E",
              "versionEndExcluding": "1.27.4",
              "versionStartIncluding": "1.27.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:f5:nginx_plus:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "684EDE01-D672-43C3-A447-BECB6C5D2033",
              "versionEndExcluding": "r32",
              "versionStartIncluding": "r28",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:f5:nginx_plus:r32:-:*:*:*:*:*:*",
              "matchCriteriaId": "36C4308E-651E-437C-84E7-10C542E3ADC2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:f5:nginx_plus:r32:p1:*:*:*:*:*:*",
              "matchCriteriaId": "FA913184-EAAD-409E-99C6-AB979DAA93F3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:f5:nginx_plus:r33:-:*:*:*:*:*:*",
              "matchCriteriaId": "514B0A2A-E2FD-4DB7-B5B8-5C59F1D60AD8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:f5:nginx_plus:r33:p1:*:*:*:*:*:*",
              "matchCriteriaId": "46DC49B8-7286-4867-9CDA-1C1B469CD304",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Cuando se configuran varios bloques de servidores para compartir la misma direcci\u00f3n IP y puerto, un atacante puede usar la reanudaci\u00f3n de sesi\u00f3n para eludir los requisitos de autenticaci\u00f3n de certificados de cliente en estos servidores. Esta vulnerabilidad surge cuando se utilizan tickets de sesi\u00f3n TLS https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_ticket_key y/o se utiliza la cach\u00e9 de sesi\u00f3n SSL https://nginx.org/en/docs/http/ngx_http_ssl_module.html#ssl_session_cache en el servidor predeterminado y este est\u00e1 realizando la autenticaci\u00f3n de certificados de cliente. Nota: Las versiones de software que han llegado al final del soporte t\u00e9cnico (EoTS) no se eval\u00faan."
    }
  ],
  "id": "CVE-2025-23419",
  "lastModified": "2025-11-12T14:50:08.157",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "f5sirt@f5.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "f5sirt@f5.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-02-05T18:15:33.347",
  "references": [
    {
      "source": "f5sirt@f5.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://my.f5.com/manage/s/article/K000149173"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2025/02/05/8"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
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      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00017.html"
    }
  ],
  "sourceIdentifier": "f5sirt@f5.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ],
      "source": "f5sirt@f5.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-613"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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