FKIE_CVE-2021-31865

Vulnerability from fkie_nvd - Published: 2021-04-28 07:15 - Updated: 2026-06-17 03:52
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
Redmine before 4.0.9, 4.1.x before 4.1.3, and 4.2.x before 4.2.1 allows users to circumvent the allowed filename extensions of uploaded attachments.
References
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2021/05/msg00013.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://www.redmine.org/news/131Vendor Advisory
cve@mitre.orghttps://www.redmine.org/projects/redmine/wiki/Security_AdvisoriesVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/05/msg00013.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.redmine.org/news/131Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.redmine.org/projects/redmine/wiki/Security_AdvisoriesVendor Advisory
Impacted products
Vendor Product Version
redmine redmine *
redmine redmine *
redmine redmine *
debian debian_linux 9.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:redmine:redmine:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9945EED3-D23D-4055-9A7D-0FF5956B838E",
              "versionEndExcluding": "4.0.9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:redmine:redmine:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "80ACD361-2874-4B70-88F1-3999025D6192",
              "versionEndExcluding": "4.1.3",
              "versionStartIncluding": "4.1.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:redmine:redmine:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "ECC28D7C-7E3E-406A-B0EC-41F58BA06981",
              "versionEndExcluding": "4.2.1",
              "versionStartIncluding": "4.2.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Redmine before 4.0.9, 4.1.x before 4.1.3, and 4.2.x before 4.2.1 allows users to circumvent the allowed filename extensions of uploaded attachments."
    },
    {
      "lang": "es",
      "value": "Redmine versiones anteriores a 4.0.9, versiones 4.1.x anteriores a 4.1.3 y versiones 4.2.x anteriores a 4.2.1, permite a usuarios omitir unas extensiones de nombre de archivo permitidas de archivos adjuntos cargados"
    }
  ],
  "id": "CVE-2021-31865",
  "lastModified": "2026-06-17T03:52:22.270",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-04-28T07:15:07.637",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00013.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.redmine.org/news/131"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.redmine.org/projects/redmine/wiki/Security_Advisories"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00013.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.redmine.org/news/131"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.redmine.org/projects/redmine/wiki/Security_Advisories"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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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.



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