gsd-2021-29434
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
Wagtail is a Django content management system. In affected versions of Wagtail, when saving the contents of a rich text field in the admin interface, Wagtail does not apply server-side checks to ensure that link URLs use a valid protocol. A malicious user with access to the admin interface could thus craft a POST request to publish content with `javascript:` URLs containing arbitrary code. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin. See referenced GitHub advisory for additional details, including a workaround. Patched versions have been released as Wagtail 2.11.7 (for the LTS 2.11 branch) and Wagtail 2.12.4 (for the current 2.12 branch).
Aliases
Aliases
CVE-2021-29434


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-29434",
    "description": "Wagtail is a Django content management system. In affected versions of Wagtail, when saving the contents of a rich text field in the admin interface, Wagtail does not apply server-side checks to ensure that link URLs use a valid protocol. A malicious user with access to the admin interface could thus craft a POST request to publish content with `javascript:` URLs containing arbitrary code. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin. See referenced GitHub advisory for additional details, including a workaround. Patched versions have been released as Wagtail 2.11.7 (for the LTS 2.11 branch) and Wagtail 2.12.4 (for the current 2.12 branch).",
    "id": "GSD-2021-29434"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-29434"
      ],
      "details": "Wagtail is a Django content management system. In affected versions of Wagtail, when saving the contents of a rich text field in the admin interface, Wagtail does not apply server-side checks to ensure that link URLs use a valid protocol. A malicious user with access to the admin interface could thus craft a POST request to publish content with `javascript:` URLs containing arbitrary code. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin. See referenced GitHub advisory for additional details, including a workaround. Patched versions have been released as Wagtail 2.11.7 (for the LTS 2.11 branch) and Wagtail 2.12.4 (for the current 2.12 branch).",
      "id": "GSD-2021-29434",
      "modified": "2023-12-13T01:23:36.986975Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-29434",
        "STATE": "PUBLIC",
        "TITLE": "Improper validation of URLs (\u0027Cross-site Scripting\u0027) in Wagtail rich text fields"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "wagtail",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c= 2.11.6"
                        },
                        {
                          "version_value": "\u003e= 2.12, \u003c= 2.12.3"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "wagtail"
            }
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      "description": {
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            "value": "Wagtail is a Django content management system. In affected versions of Wagtail, when saving the contents of a rich text field in the admin interface, Wagtail does not apply server-side checks to ensure that link URLs use a valid protocol. A malicious user with access to the admin interface could thus craft a POST request to publish content with `javascript:` URLs containing arbitrary code. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin. See referenced GitHub advisory for additional details, including a workaround. Patched versions have been released as Wagtail 2.11.7 (for the LTS 2.11 branch) and Wagtail 2.12.4 (for the current 2.12 branch)."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "{\"CWE-79\":\"Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)\"}"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/wagtail/wagtail/security/advisories/GHSA-wq5h-f9p5-q7fx",
            "refsource": "CONFIRM",
            "url": "https://github.com/wagtail/wagtail/security/advisories/GHSA-wq5h-f9p5-q7fx"
          },
          {
            "name": "https://pypi.org/project/wagtail/",
            "refsource": "MISC",
            "url": "https://pypi.org/project/wagtail/"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-wq5h-f9p5-q7fx",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003e=2.11.0,\u003c2.11.7||\u003e=2.12.0,\u003c2.12.4",
          "affected_versions": "All versions starting from 2.11.0 before 2.11.7, all versions starting from 2.12.0 before 2.12.4",
          "cvss_v2": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-79",
            "CWE-937"
          ],
          "date": "2021-04-29",
          "description": "When saving the contents of a rich text field in the admin interface, Wagtail does not apply server-side checks to ensure that link URLs use a valid protocol. A malicious user with access to the admin interface could thus craft a POST request to publish content with `javascript:` URLs containing arbitrary code. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin. See referenced GitHub advisory for additional details, including a workaround. Patched versions have been released as Wagtail (for the branch) and Wagtail (for the current branch).",
          "fixed_versions": [
            "2.11.7",
            "2.12.4"
          ],
          "identifier": "CVE-2021-29434",
          "identifiers": [
            "CVE-2021-29434",
            "GHSA-wq5h-f9p5-q7fx"
          ],
          "not_impacted": "All versions before 2.11.0, all versions starting from 2.11.7 before 2.12.0, all versions starting from 2.12.4",
          "package_slug": "pypi/wagtail",
          "pubdate": "2021-04-19",
          "solution": "Upgrade to versions 2.11.7, 2.12.4 or above.",
          "title": "Cross-site Scripting",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-29434"
          ],
          "uuid": "49e9aae5-321e-4a8b-a1f6-be874c73e5b7"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:torchbox:wagtail:*:*:*:*:lts:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.11.7",
                "versionStartIncluding": "2.11.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:torchbox:wagtail:*:*:*:*:-:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.11.6",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:torchbox:wagtail:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.12.4",
                "versionStartIncluding": "2.12.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
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          "ID": "CVE-2021-29434"
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        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Wagtail is a Django content management system. In affected versions of Wagtail, when saving the contents of a rich text field in the admin interface, Wagtail does not apply server-side checks to ensure that link URLs use a valid protocol. A malicious user with access to the admin interface could thus craft a POST request to publish content with `javascript:` URLs containing arbitrary code. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin. See referenced GitHub advisory for additional details, including a workaround. Patched versions have been released as Wagtail 2.11.7 (for the LTS 2.11 branch) and Wagtail 2.12.4 (for the current 2.12 branch)."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-79"
                }
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          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/wagtail/wagtail/security/advisories/GHSA-wq5h-f9p5-q7fx",
              "refsource": "CONFIRM",
              "tags": [
                "Mitigation",
                "Third Party Advisory"
              ],
              "url": "https://github.com/wagtail/wagtail/security/advisories/GHSA-wq5h-f9p5-q7fx"
            },
            {
              "name": "https://pypi.org/project/wagtail/",
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              "tags": [
                "Product",
                "Third Party Advisory"
              ],
              "url": "https://pypi.org/project/wagtail/"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 3.5,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 6.8,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "LOW",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 1.7,
          "impactScore": 2.7
        }
      },
      "lastModifiedDate": "2021-04-29T14:24Z",
      "publishedDate": "2021-04-19T19:15Z"
    }
  }
}


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