Vulnerability-Lookup

CVE-2021-21682 (GCVE-0-2021-21682)

Vulnerability from cvelistv5 – Published: 2021-10-06 22:10 – Updated: 2024-08-03 18:23

Summary

Jenkins 2.314 and earlier, LTS 2.303.1 and earlier accepts names of jobs and other entities with a trailing dot character, potentially replacing the configuration and data of other entities on Windows.

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Assigner

jenkins CNA under the mitre root

CNA scorecard E 44/100 over 132 records in the last 180 days details

References

2 references

URL	Tags
https://www.jenkins.io/security/advisory/2021-10-…	x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2021/10/06/1	mailing-listx_refsource_MLIST

Impacted products

1 product

Vendor	Product	Version	CPE status
Jenkins project	Jenkins	Affected: unspecified , ≤ 2.314 (custom) Affected: unspecified , ≤ LTS 2.303.1 (custom)	guessed

Show details on NVD website

JSON

To clipboard

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bit-jenkins-2021-21682

Vulnerability from bitnami_vulndb

Published

2024-03-06 11:01

Modified

2026-09-08 08:34

Summary

Details

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "jenkins",
        "purl": "pkg:bitnami/jenkins"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.314.1"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-21682"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*",
      "cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*"
    ],
    "severity": "Medium"
  },
  "details": "Jenkins 2.314 and earlier, LTS 2.303.1 and earlier accepts names of jobs and other entities with a trailing dot character, potentially replacing the configuration and data of other entities on Windows.",
  "id": "BIT-jenkins-2021-21682",
  "modified": "2026-09-08T08:34:36.952Z",
  "published": "2024-03-06T11:01:30.901Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "http://www.openwall.com/lists/oss-security/2021/10/06/1"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2424"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21682"
    }
  ],
  "schema_version": "1.5.0"
}

FKIE_CVE-2021-21682

Vulnerability from fkie_nvd - Published: 2021-10-06 23:15 - Updated: 2026-06-17 03:35

Severity

4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Summary

References

URL	Tags
jenkinsci-cert@googlegroups.com	http://www.openwall.com/lists/oss-security/2021/10/06/1	Mailing List, Third Party Advisory
jenkinsci-cert@googlegroups.com	https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2424	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2021/10/06/1	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2424	Vendor Advisory

Impacted products

Vendor	Product	Version
jenkins	jenkins	*
jenkins	jenkins	*
microsoft	windows	-

JSON

To clipboard

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          "product": "Jenkins",
          "vendor": "Jenkins project",
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    }
  ],
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  "lastModified": "2026-06-17T03:35:59.373",
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        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-10-06T23:15:06.860",
  "references": [
    {
      "source": "jenkinsci-cert@googlegroups.com",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2021/10/06/1"
    },
    {
      "source": "jenkinsci-cert@googlegroups.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2424"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2021/10/06/1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2424"
    }
  ],
  "sourceIdentifier": "jenkinsci-cert@googlegroups.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-6Q4G-84F3-MW74

Vulnerability from github – Published: 2022-05-24 19:16 – Updated: 2022-12-15 17:39

Summary

Improper handling of equivalent directory names on Windows in Jenkins

Details

Jenkins stores jobs and other entities on disk using their name shown on the UI as file and folder names.

On Windows, when specifying a file or folder with a trailing dot character (example.), the file or folder will be treated as if that character was not present (example). As both are legal names for jobs and other entities in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier, this could allow users with the appropriate permissions to change or replace configurations of jobs and other entities.

Jenkins 2.315, LTS 2.303.2 does not allow names of jobs and other entities to end with a dot character.

Severity

6.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.314"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.jenkins-ci.main:jenkins-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.304"
            },
            {
              "fixed": "2.315"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.303.1"
      },
      "package": {
        "ecosystem": "Maven",
        "name": "org.jenkins-ci.main:jenkins-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.303.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-21682"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-42"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-12-15T17:39:41Z",
    "nvd_published_at": "2021-10-06T23:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Jenkins stores jobs and other entities on disk using their name shown on the UI as file and folder names.\n\nOn Windows, when specifying a file or folder with a trailing dot character (`example.`), the file or folder will be treated as if that character was not present (`example`). As both are legal names for jobs and other entities in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier, this could allow users with the appropriate permissions to change or replace configurations of jobs and other entities.\n\nJenkins 2.315, LTS 2.303.2 does not allow names of jobs and other entities to end with a dot character.",
  "id": "GHSA-6q4g-84f3-mw74",
  "modified": "2022-12-15T17:39:41Z",
  "published": "2022-05-24T19:16:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21682"
    },
    {
      "type": "WEB",
      "url": "https://github.com/jenkinsci/jenkins/commit/c2c2b59071265aea07f88d5e95297c0a433921c3"
    },
    {
      "type": "WEB",
      "url": "https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2424"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2021/10/06/1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Improper handling of equivalent directory names on Windows in Jenkins"
}

GSD-2021-21682

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Aliases

CVE-2021-21682

Aliases

CVE-2021-21682

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-21682",
    "description": "Jenkins 2.314 and earlier, LTS 2.303.1 and earlier accepts names of jobs and other entities with a trailing dot character, potentially replacing the configuration and data of other entities on Windows.",
    "id": "GSD-2021-21682",
    "references": [
      "https://security.archlinux.org/CVE-2021-21682"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-21682"
      ],
      "details": "Jenkins 2.314 and earlier, LTS 2.303.1 and earlier accepts names of jobs and other entities with a trailing dot character, potentially replacing the configuration and data of other entities on Windows.",
      "id": "GSD-2021-21682",
      "modified": "2023-12-13T01:23:11.382219Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "jenkinsci-cert@googlegroups.com",
        "ID": "CVE-2021-21682",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Jenkins",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c=",
                          "version_name": "unspecified",
                          "version_value": "2.314"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Jenkins project"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Jenkins 2.314 and earlier, LTS 2.303.1 and earlier accepts names of jobs and other entities with a trailing dot character, potentially replacing the configuration and data of other entities on Windows."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2424",
            "refsource": "MISC",
            "url": "https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2424"
          },
          {
            "name": "http://www.openwall.com/lists/oss-security/2021/10/06/1",
            "refsource": "MISC",
            "url": "http://www.openwall.com/lists/oss-security/2021/10/06/1"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "[2.303.1,2.314]",
          "affected_versions": "All versions after 2.303.1 up to 2.314",
          "cvss_v2": "AV:N/AC:L/Au:S/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2021-10-19",
          "description": "Jenkins accepts names of jobs and other entities with a trailing dot character, potentially replacing the configuration and data of other entities on Windows.",
          "fixed_versions": [
            "2.315"
          ],
          "identifier": "CVE-2021-21682",
          "identifiers": [
            "CVE-2021-21682"
          ],
          "not_impacted": "All versions up to 2.303.1, all versions after 2.314",
          "package_slug": "maven/org.jenkins-ci.main/jenkins-core",
          "pubdate": "2021-10-06",
          "solution": "Upgrade to version 2.315 or above.",
          "title": "Improper Encoding or Escaping of Output",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-21682",
            "https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2424",
            "http://www.openwall.com/lists/oss-security/2021/10/06/1"
          ],
          "uuid": "b8b37546-e03b-4c4a-9d49-a13cc46563a4"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [
              {
                "children": [],
                "cpe_match": [
                  {
                    "cpe23Uri": "cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*",
                    "cpe_name": [],
                    "versionEndIncluding": "2.303.1",
                    "vulnerable": true
                  },
                  {
                    "cpe23Uri": "cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*",
                    "cpe_name": [],
                    "versionEndIncluding": "2.314",
                    "vulnerable": true
                  }
                ],
                "operator": "OR"
              },
              {
                "children": [],
                "cpe_match": [
                  {
                    "cpe23Uri": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
                    "cpe_name": [],
                    "vulnerable": false
                  }
                ],
                "operator": "OR"
              }
            ],
            "cpe_match": [],
            "operator": "AND"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "jenkinsci-cert@googlegroups.com",
          "ID": "CVE-2021-21682"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Jenkins 2.314 and earlier, LTS 2.303.1 and earlier accepts names of jobs and other entities with a trailing dot character, potentially replacing the configuration and data of other entities on Windows."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "NVD-CWE-noinfo"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2424",
              "refsource": "CONFIRM",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2424"
            },
            {
              "name": "[oss-security] 20211006 Multiple vulnerabilities in Jenkins and Jenkins plugins",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "http://www.openwall.com/lists/oss-security/2021/10/06/1"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 4.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2023-11-22T21:20Z",
      "publishedDate": "2021-10-06T23:15Z"
    }
  }
}

WID-SEC-W-2023-0432

Vulnerability from csaf_certbund - Published: 2021-10-06 22:00 - Updated: 2023-02-20 23:00

Summary

Jenkins: Mehrere Schwachstellen

Severity

Mittel

Scope

4 vulnerabilities in this advisory, including CVE-2021-21682.

CVE-2021-21682

In Jenkins existieren mehrere Schwachstellen. Die Schwachstellen bestehen im Jenkins Core sowie in verschiedenen Plugins. Ein entfernter, anonymer Angreifer kann diese Schwachstellen ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Informationen offenzulegen oder einen Cross-Site-Scripting-Angriff durchzuführen. Zur erfolgreichen Ausnutzung einiger dieser Schwachstellen ist eine Benutzeraktion erforderlich.

Known affected: 3 products

Open the full advisory

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2021-21682 (GCVE-0-2021-21682)

bit-jenkins-2021-21682

Vulnerability from bitnami_vulndb

FKIE_CVE-2021-21682

GHSA-6Q4G-84F3-MW74

GSD-2021-21682

WID-SEC-W-2023-0432

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Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour