FKIE_CVE-2025-23016

Vulnerability from fkie_nvd - Published: 2025-01-10 12:15 - Updated: 2026-06-17 08:51
Severity
9.3 (Critical) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Summary
FastCGI fcgi2 (aka fcgi) 2.x through 2.4.4 has an integer overflow (and resultant heap-based buffer overflow) via crafted nameLen or valueLen values in data to the IPC socket. This occurs in ReadParams in fcgiapp.c.
References
cve@mitre.orghttps://github.com/FastCGI-Archives/fcgi2/issues/67
cve@mitre.orghttps://github.com/FastCGI-Archives/fcgi2/releases/tag/2.4.5
cve@mitre.orghttps://www.synacktiv.com/en/publications/cve-2025-23016-exploiting-the-fastcgi-library
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2025/04/23/4
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00009.html
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.synacktiv.com/en/publications/cve-2025-23016-exploiting-the-fastcgi-library
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "fcgi",
          "vendor": "FastCGI",
          "versions": [
            {
              "lessThanOrEqual": "2.4.4",
              "status": "affected",
              "version": "2.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "FastCGI fcgi2 (aka fcgi) 2.x through 2.4.4 has an integer overflow (and resultant heap-based buffer overflow) via crafted nameLen or valueLen values in data to the IPC socket. This occurs in ReadParams in fcgiapp.c."
    },
    {
      "lang": "es",
      "value": "FastCGI fcgi2 (tambi\u00e9n conocido como fcgi) 2.x a 2.4.4 tiene un desbordamiento de enteros (y el desbordamiento de b\u00fafer basado en el mont\u00f3n resultante) a trav\u00e9s de valores nameLen o valueLen manipulados en los datos del socket IPC. Esto ocurre en ReadParams en fcgiapp.c."
    }
  ],
  "id": "CVE-2025-23016",
  "lastModified": "2026-06-17T08:51:26.983",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 6.0,
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-23016",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-09-19T03:55:14.343054Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-01-10T12:15:25.480",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/FastCGI-Archives/fcgi2/issues/67"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/FastCGI-Archives/fcgi2/releases/tag/2.4.5"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://www.synacktiv.com/en/publications/cve-2025-23016-exploiting-the-fastcgi-library"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2025/04/23/4"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00009.html"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://www.synacktiv.com/en/publications/cve-2025-23016-exploiting-the-fastcgi-library"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "cve@mitre.org",
      "type": "Secondary"
    }
  ]
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.