GSD-2020-15249

Vulnerability from gsd - Updated: 2023-12-13 01:21
Details
October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. In October CMS from version 1.0.319 and before version 1.0.469, backend users with access to upload files were permitted to upload SVG files without any sanitization applied to the uploaded files. Since SVG files support being parsed as HTML by browsers, this means that they could theoretically upload Javascript that would be executed on a path under the website's domain (i.e. /storage/app/media/evil.svg), but they would have to convince their target to visit that location directly in the target's browser as the backend does not display SVGs inline anywhere, SVGs are only displayed as image resources in the backend and are thus unable to be executed. Issue has been patched in Build 469 (v1.0.469) & v1.1.0.
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Aliases
CVE-2020-15249
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{
  "GSD": {
    "alias": "CVE-2020-15249",
    "description": "October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. In October CMS from version 1.0.319 and before version 1.0.469, backend users with access to upload files were permitted to upload SVG files without any sanitization applied to the uploaded files. Since SVG files support being parsed as HTML by browsers, this means that they could theoretically upload Javascript that would be executed on a path under the website\u0027s domain (i.e. /storage/app/media/evil.svg), but they would have to convince their target to visit that location directly in the target\u0027s browser as the backend does not display SVGs inline anywhere, SVGs are only displayed as image resources in the backend and are thus unable to be executed. Issue has been patched in Build 469 (v1.0.469) \u0026 v1.1.0.",
    "id": "GSD-2020-15249"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-15249"
      ],
      "details": "October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. In October CMS from version 1.0.319 and before version 1.0.469, backend users with access to upload files were permitted to upload SVG files without any sanitization applied to the uploaded files. Since SVG files support being parsed as HTML by browsers, this means that they could theoretically upload Javascript that would be executed on a path under the website\u0027s domain (i.e. /storage/app/media/evil.svg), but they would have to convince their target to visit that location directly in the target\u0027s browser as the backend does not display SVGs inline anywhere, SVGs are only displayed as image resources in the backend and are thus unable to be executed. Issue has been patched in Build 469 (v1.0.469) \u0026 v1.1.0.",
      "id": "GSD-2020-15249",
      "modified": "2023-12-13T01:21:43.223976Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2020-15249",
        "STATE": "PUBLIC",
        "TITLE": "Stored XSS by authenticated backend user with access to upload files"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "october",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003e= 1.0.319, \u003c 1.0.469"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "octobercms"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. In October CMS from version 1.0.319 and before version 1.0.469, backend users with access to upload files were permitted to upload SVG files without any sanitization applied to the uploaded files. Since SVG files support being parsed as HTML by browsers, this means that they could theoretically upload Javascript that would be executed on a path under the website\u0027s domain (i.e. /storage/app/media/evil.svg), but they would have to convince their target to visit that location directly in the target\u0027s browser as the backend does not display SVGs inline anywhere, SVGs are only displayed as image resources in the backend and are thus unable to be executed. Issue has been patched in Build 469 (v1.0.469) \u0026 v1.1.0."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 2.8,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-79 Cross-site Scripting (XSS)"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/octobercms/library/commit/80aab47f044a2660aa352450f55137598f362aa4",
            "refsource": "MISC",
            "url": "https://github.com/octobercms/library/commit/80aab47f044a2660aa352450f55137598f362aa4"
          },
          {
            "name": "https://github.com/octobercms/october/security/advisories/GHSA-fx3v-553x-3c4q",
            "refsource": "CONFIRM",
            "url": "https://github.com/octobercms/october/security/advisories/GHSA-fx3v-553x-3c4q"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-fx3v-553x-3c4q",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003e=1.0.319,\u003c1.0.469",
          "affected_versions": "All versions starting from 1.0.319 before 1.0.469",
          "cvss_v2": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-79",
            "CWE-937"
          ],
          "date": "2021-03-04",
          "description": "October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. In October CMS from version 1.0.319 and before version 1.0.469, backend users with access to upload files were permitted to upload SVG files without any sanitization applied to the uploaded files. Since SVG files support being parsed as HTML by browsers, this means that they could theoretically upload Javascript that would be executed on a path under the website\u0027s domain (i.e. /storage/app/media/evil.svg), but they would have to convince their target to visit that location directly in the target\u0027s browser as the backend does not display SVGs inline anywhere, SVGs are only displayed as image resources in the backend and are thus unable to be executed. Issue has been patched in Build 469 (v1.0.469) \u0026 v1.1.0.",
          "fixed_versions": [
            "1.0.469"
          ],
          "identifier": "CVE-2020-15249",
          "identifiers": [
            "GHSA-fx3v-553x-3c4q",
            "CVE-2020-15249"
          ],
          "not_impacted": "All versions before 1.0.319, all versions starting from 1.0.469",
          "package_slug": "packagist/october/backend",
          "pubdate": "2020-11-23",
          "solution": "Upgrade to version 1.0.469 or above.",
          "title": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
          "urls": [
            "https://github.com/octobercms/october/security/advisories/GHSA-fx3v-553x-3c4q",
            "https://github.com/octobercms/library/commit/80aab47f044a2660aa352450f55137598f362aa4",
            "https://nvd.nist.gov/vuln/detail/CVE-2020-15249",
            "https://github.com/advisories/GHSA-fx3v-553x-3c4q"
          ],
          "uuid": "e3fabe3c-4277-4dcc-b79b-ddf7ebd2fe6b"
        },
        {
          "affected_range": "\u003e=1.0.319,\u003c1.0.469",
          "affected_versions": "All versions starting from 1.0.319 before 1.0.469",
          "cvss_v2": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-79",
            "CWE-937"
          ],
          "date": "2020-11-30",
          "description": "October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. In October CMS from and, backend users with access to upload files were permitted to upload SVG files without any sanitization applied to the uploaded files. Since SVG files support being parsed as HTML by browsers, this means that they could theoretically upload Javascript that would be executed on a path under the website\u0027s domain (`i.e.` `/storage/app/media/evil.svg)`, but they would have to convince their target to visit that location directly in the target\u0027s browser as the backend does not display SVGs inline anywhere, SVGs are only displayed as image resources in the backend and are thus unable to be executed.",
          "fixed_versions": [
            "1.0.469"
          ],
          "identifier": "CVE-2020-15249",
          "identifiers": [
            "CVE-2020-15249",
            "GHSA-fx3v-553x-3c4q"
          ],
          "not_impacted": "All versions before 1.0.319, all versions starting from 1.0.469",
          "package_slug": "packagist/october/october",
          "pubdate": "2020-11-23",
          "solution": "Upgrade to version 1.0.469 or above.",
          "title": "Cross-site Scripting",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-15249"
          ],
          "uuid": "5978ae09-6588-4b94-9d69-4cb9bc5ffa96"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.0.469",
                "versionStartIncluding": "1.0.319",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2020-15249"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. In October CMS from version 1.0.319 and before version 1.0.469, backend users with access to upload files were permitted to upload SVG files without any sanitization applied to the uploaded files. Since SVG files support being parsed as HTML by browsers, this means that they could theoretically upload Javascript that would be executed on a path under the website\u0027s domain (i.e. /storage/app/media/evil.svg), but they would have to convince their target to visit that location directly in the target\u0027s browser as the backend does not display SVGs inline anywhere, SVGs are only displayed as image resources in the backend and are thus unable to be executed. Issue has been patched in Build 469 (v1.0.469) \u0026 v1.1.0."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-79"
                }
              ]
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          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/octobercms/october/security/advisories/GHSA-fx3v-553x-3c4q",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://github.com/octobercms/october/security/advisories/GHSA-fx3v-553x-3c4q"
            },
            {
              "name": "https://github.com/octobercms/library/commit/80aab47f044a2660aa352450f55137598f362aa4",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/octobercms/library/commit/80aab47f044a2660aa352450f55137598f362aa4"
            }
          ]
        }
      },
      "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": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.3,
          "impactScore": 2.7
        }
      },
      "lastModifiedDate": "2020-11-30T16:06Z",
      "publishedDate": "2020-11-23T20:15Z"
    }
  }
}


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