FKIE_CVE-2025-12875

Vulnerability from fkie_nvd - Published: 2025-11-07 21:15 - Updated: 2026-10-19 13:10
Severity
5.3 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
A weakness has been identified in mruby 3.4.0. This vulnerability affects the function ary_fill_exec of the file mrbgems/mruby-array-ext/src/array.c. Executing a manipulation of the argument start/length can lead to out-of-bounds write. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. This patch is called 93619f06dd378db6766666b30c08978311c7ec94. It is best practice to apply a patch to resolve this issue.
References
cna@vuldb.comhttps://github.com/makesoftwaresafe/mruby/commit/93619f06dd378db6766666b30c08978311c7ec94Patch
cna@vuldb.comhttps://github.com/mruby/mruby/
cna@vuldb.comhttps://github.com/mruby/mruby/issues/6650Issue Tracking
cna@vuldb.comhttps://github.com/mruby/mruby/issues/6650#event-20443453808Issue Tracking
cna@vuldb.comhttps://github.com/mruby/mruby/issues/6650#issuecomment-3430851605Patch
cna@vuldb.comhttps://vuldb.com/?ctiid.331511Permissions Required, VDB Entry
cna@vuldb.comhttps://vuldb.com/?id.331511Third Party Advisory, VDB Entry
cna@vuldb.comhttps://vuldb.com/?submit.680879Third Party Advisory, VDB Entry
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/mruby/mruby/issues/6650Issue Tracking
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/mruby/mruby/issues/6650#issuecomment-3430851605Patch
Impacted products
Vendor Product Version
mruby mruby 3.4.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:mruby:mruby:*:*:*:*:*:*:*:*"
          ],
          "product": "mruby",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "3.4.0"
            }
          ]
        }
      ],
      "source": "cna@vuldb.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:mruby:mruby:3.4.0:*:*:*:*:ruby:*:*",
              "matchCriteriaId": "65ECFCF1-24DD-4CC7-81CD-50D15E75C9F2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A weakness has been identified in mruby 3.4.0. This vulnerability affects the function ary_fill_exec of the file mrbgems/mruby-array-ext/src/array.c. Executing a manipulation of the argument start/length can lead to out-of-bounds write. The attack needs to be launched locally. The exploit has been made available to the public and could be used for attacks. This patch is called 93619f06dd378db6766666b30c08978311c7ec94. It is best practice to apply a patch to resolve this issue."
    },
    {
      "lang": "es",
      "value": "Se ha identificado una vulnerabilidad en mruby 3.4.0. Esta vulnerabilidad afecta a la funci\u00f3n ary_fill_exec del archivo mrbgems/mruby-array-ext/src/array.c. La ejecuci\u00f3n de una manipulaci\u00f3n del argumento start/length puede llevar a una escritura fuera de l\u00edmites. El ataque debe lanzarse localmente. El exploit se ha puesto a disposici\u00f3n del p\u00fablico y podr\u00eda usarse para ataques. Este parche se denomina 93619f06dd378db6766666b30c08978311c7ec94. Es una buena pr\u00e1ctica aplicar un parche para resolver este problema."
    }
  ],
  "id": "CVE-2025-12875",
  "lastModified": "2026-10-19T13:10:00.110",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.3,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:L/Au:S/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.4,
        "source": "cna@vuldb.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 1.9,
          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "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:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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": "LOW",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-12875",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-11-13T14:13:49.237460Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-11-07T21:15:40.557",
  "references": [
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/makesoftwaresafe/mruby/commit/93619f06dd378db6766666b30c08978311c7ec94"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/mruby/mruby/"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Issue Tracking"
      ],
      "url": "https://github.com/mruby/mruby/issues/6650"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Issue Tracking"
      ],
      "url": "https://github.com/mruby/mruby/issues/6650#event-20443453808"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/mruby/mruby/issues/6650#issuecomment-3430851605"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Permissions Required",
        "VDB Entry"
      ],
      "url": "https://vuldb.com/?ctiid.331511"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://vuldb.com/?id.331511"
    },
    {
      "source": "cna@vuldb.com",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://vuldb.com/?submit.680879"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
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      "url": "https://github.com/mruby/mruby/issues/6650"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/mruby/mruby/issues/6650#issuecomment-3430851605"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        },
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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