UBUNTU-CVE-2025-71450 (CVE-2025-71450)

Vulnerability from osv_ubuntu – Published: 2026-11-03 00:00 – Updated: 2026-11-03 00:00 – Source website
VLAI
Details

inih before r63 contains a one-byte stack buffer under-read in ini_parse_stream() in ini.c that allows attackers to read abyss[-1] via an embedded NUL byte after an overlong line. Attackers can supply an INI file or string with a line of at least INI_MAX_LINE-1 bytes followed by a NUL byte, causing undefined behavior reported by memory sanitizers.

Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libinih1",
            "binary_version": "40-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "libinih",
        "purl": "pkg:deb/ubuntu/libinih@40-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "40-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libinih1",
            "binary_version": "48-1"
          },
          {
            "binary_name": "libinireader0",
            "binary_version": "48-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "libinih",
        "purl": "pkg:deb/ubuntu/libinih@48-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "45-1",
        "47-1",
        "48-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libinih1",
            "binary_version": "53-1ubuntu3"
          },
          {
            "binary_name": "libinireader0",
            "binary_version": "53-1ubuntu3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "libinih",
        "purl": "pkg:deb/ubuntu/libinih@53-1ubuntu3?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "53-1ubuntu1",
        "53-1ubuntu2",
        "53-1ubuntu3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libinih1",
            "binary_version": "55-1ubuntu2"
          },
          {
            "binary_name": "libinireader0",
            "binary_version": "55-1ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "libinih",
        "purl": "pkg:deb/ubuntu/libinih@55-1ubuntu2?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "55-1ubuntu1",
        "55-1ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libinih1",
            "binary_version": "61-1ubuntu1"
          },
          {
            "binary_name": "libinireader0",
            "binary_version": "61-1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "libinih",
        "purl": "pkg:deb/ubuntu/libinih@61-1ubuntu1?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "61-1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libinih1",
            "binary_version": "61-1ubuntu1"
          },
          {
            "binary_name": "libinireader0",
            "binary_version": "61-1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libinih",
        "purl": "pkg:deb/ubuntu/libinih@61-1ubuntu1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "59-1ubuntu1",
        "61-1ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "inih before r63 contains a one-byte stack buffer under-read in ini_parse_stream() in ini.c that allows attackers to read abyss[-1] via an embedded NUL byte after an overlong line. Attackers can supply an INI file or string with a line of at least INI_MAX_LINE-1 bytes followed by a NUL byte, causing undefined behavior reported by memory sanitizers.",
  "id": "UBUNTU-CVE-2025-71450",
  "modified": "2026-11-03T00:00:00Z",
  "published": "2026-11-03T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-71450"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-71450"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/benhoyt/inih/blob/r62/ini.c#L162-L169"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/benhoyt/inih/commit/8e06f6b77b5d4471bdc6d85ada81b67d37354a5c"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/benhoyt/inih/issues/223"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/benhoyt/inih/pull/206"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/benhoyt/inih/releases/tag/r63"
    },
    {
      "type": "REPORT",
      "url": "https://hackmd.io/@haindpwn/inih-long-line-discard-oob-read"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/inih-before-r63-stack-buffer-under-read-in-ini-parse-stream-discard-loop"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-71450"
  ]
}



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