ubuntu-cve-2025-40907
Vulnerability from osv_ubuntu
Published
2025-05-16 13:15
Modified
2025-09-08 17:11
Summary
Details

FCGI versions 0.44 through 0.82, for Perl, include a vulnerable version of the FastCGI fcgi2 (aka fcgi) library. The included FastCGI library is affected by CVE-2025-23016, causing 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.

Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libfcgi-perl",
            "binary_version": "0.77-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libfcgi-perl",
        "purl": "pkg:deb/ubuntu/libfcgi-perl@0.77-1ubuntu0.1~esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.77-1ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.77-1",
        "0.77-1build1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libfcgi-perl",
            "binary_version": "0.78-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "libfcgi-perl",
        "purl": "pkg:deb/ubuntu/libfcgi-perl@0.78-2ubuntu0.1~esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.78-2ubuntu0.1~esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.78-2build1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libfcgi-perl",
            "binary_version": "0.79-1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libfcgi-perl",
        "purl": "pkg:deb/ubuntu/libfcgi-perl@0.79-1ubuntu0.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.79-1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.78-2build2",
        "0.78-2build3",
        "0.79-1"
      ]
    }
  ],
  "aliases": [],
  "details": "FCGI versions 0.44 through 0.82, for Perl, include a vulnerable version of the FastCGI fcgi2 (aka fcgi) library. The included FastCGI library is affected by  CVE-2025-23016, causing 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.",
  "id": "UBUNTU-CVE-2025-40907",
  "modified": "2025-09-08T17:11:56Z",
  "published": "2025-05-16T13:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-40907"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-40907"
    },
    {
      "type": "REPORT",
      "url": "https://lists.security.metacpan.org/cve-announce/msg/29651740/"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2025/04/23/4"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/FastCGI-Archives/fcgi2/issues/67"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/FastCGI-Archives/fcgi2/releases/tag/2.4.5"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/perl-catalyst/FCGI/issues/14"
    },
    {
      "type": "REPORT",
      "url": "https://patch-diff.githubusercontent.com/raw/FastCGI-Archives/fcgi2/pull/74.patch"
    },
    {
      "type": "REPORT",
      "url": "https://www.synacktiv.com/en/publications/cve-2025-23016-exploiting-the-fastcgi-library"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7527-1"
    }
  ],
  "related": [
    "USN-7527-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-40907"
  ]
}



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