GSD-2021-21264

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. A bypass of CVE-2020-26231 (fixed in 1.0.470/471 and 1.1.1) was discovered that has the same impact as CVE-2020-26231 & CVE-2020-15247. An authenticated backend user with the `cms.manage_pages`, `cms.manage_layouts`, or `cms.manage_partials` permissions who would **normally** not be permitted to provide PHP code to be executed by the CMS due to `cms.enableSafeMode` being enabled is able to write specific Twig code to escape the Twig sandbox and execute arbitrary PHP. This is not a problem for anyone that trusts their users with those permissions to normally write & manage PHP within the CMS by not having `cms.enableSafeMode` enabled, but would be a problem for anyone relying on `cms.enableSafeMode` to ensure that users with those permissions in production do not have access to write & execute arbitrary PHP. Issue has been patched in Build 472 (v1.0.472) and v1.1.2. As a workaround, apply https://github.com/octobercms/october/commit/f63519ff1e8d375df30deba63156a2fc97aa9ee7 to your installation manually if unable to upgrade to Build 472 or v1.1.2.
Aliases
Aliases
CVE-2021-21264
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{
  "GSD": {
    "alias": "CVE-2021-21264",
    "description": "October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. A bypass of CVE-2020-26231 (fixed in 1.0.470/471 and 1.1.1) was discovered that has the same impact as CVE-2020-26231 \u0026 CVE-2020-15247. An authenticated backend user with the `cms.manage_pages`, `cms.manage_layouts`, or `cms.manage_partials` permissions who would **normally** not be permitted to provide PHP code to be executed by the CMS due to `cms.enableSafeMode` being enabled is able to write specific Twig code to escape the Twig sandbox and execute arbitrary PHP. This is not a problem for anyone that trusts their users with those permissions to normally write \u0026 manage PHP within the CMS by not having `cms.enableSafeMode` enabled, but would be a problem for anyone relying on `cms.enableSafeMode` to ensure that users with those permissions in production do not have access to write \u0026 execute arbitrary PHP. Issue has been patched in Build 472 (v1.0.472) and v1.1.2. As a workaround, apply https://github.com/octobercms/october/commit/f63519ff1e8d375df30deba63156a2fc97aa9ee7 to your installation manually if unable to upgrade to Build 472 or v1.1.2.",
    "id": "GSD-2021-21264"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-21264"
      ],
      "details": "October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. A bypass of CVE-2020-26231 (fixed in 1.0.470/471 and 1.1.1) was discovered that has the same impact as CVE-2020-26231 \u0026 CVE-2020-15247. An authenticated backend user with the `cms.manage_pages`, `cms.manage_layouts`, or `cms.manage_partials` permissions who would **normally** not be permitted to provide PHP code to be executed by the CMS due to `cms.enableSafeMode` being enabled is able to write specific Twig code to escape the Twig sandbox and execute arbitrary PHP. This is not a problem for anyone that trusts their users with those permissions to normally write \u0026 manage PHP within the CMS by not having `cms.enableSafeMode` enabled, but would be a problem for anyone relying on `cms.enableSafeMode` to ensure that users with those permissions in production do not have access to write \u0026 execute arbitrary PHP. Issue has been patched in Build 472 (v1.0.472) and v1.1.2. As a workaround, apply https://github.com/octobercms/october/commit/f63519ff1e8d375df30deba63156a2fc97aa9ee7 to your installation manually if unable to upgrade to Build 472 or v1.1.2.",
      "id": "GSD-2021-21264",
      "modified": "2023-12-13T01:23:10.538999Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-21264",
        "STATE": "PUBLIC",
        "TITLE": "Bypass of fix for CVE-2020-26231, Twig sandbox escape"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "october",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "1.0.471"
                        },
                        {
                          "version_value": "1.1.1"
                        }
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              "vendor_name": "octobercms"
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      "description": {
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          {
            "lang": "eng",
            "value": "October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. A bypass of CVE-2020-26231 (fixed in 1.0.470/471 and 1.1.1) was discovered that has the same impact as CVE-2020-26231 \u0026 CVE-2020-15247. An authenticated backend user with the `cms.manage_pages`, `cms.manage_layouts`, or `cms.manage_partials` permissions who would **normally** not be permitted to provide PHP code to be executed by the CMS due to `cms.enableSafeMode` being enabled is able to write specific Twig code to escape the Twig sandbox and execute arbitrary PHP. This is not a problem for anyone that trusts their users with those permissions to normally write \u0026 manage PHP within the CMS by not having `cms.enableSafeMode` enabled, but would be a problem for anyone relying on `cms.enableSafeMode` to ensure that users with those permissions in production do not have access to write \u0026 execute arbitrary PHP. Issue has been patched in Build 472 (v1.0.472) and v1.1.2. As a workaround, apply https://github.com/octobercms/october/commit/f63519ff1e8d375df30deba63156a2fc97aa9ee7 to your installation manually if unable to upgrade to Build 472 or v1.1.2."
          }
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      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 5.2,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L",
          "version": "3.1"
        }
      },
      "problemtype": {
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          {
            "description": [
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                "lang": "eng",
                "value": "CWE-862 Missing Authorization"
              }
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        ]
      },
      "references": {
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          {
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            "url": "https://github.com/octobercms/october/security/advisories/GHSA-fcr8-6q7r-m4wg"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-fcr8-6q7r-m4wg",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "=1.0.471||=1.1.1",
          "affected_versions": "Version 1.0.471, version 1.1.1",
          "cvss_v2": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L",
          "cwe_ids": [
            "CWE-1035",
            "CWE-78",
            "CWE-862",
            "CWE-937"
          ],
          "date": "2021-05-13",
          "description": "October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. A bypass of CVE-2020-26231 (fixed in 1.0.470/471 and 1.1.1) was discovered that has the same impact as CVE-2020-26231 \u0026 CVE-2020-15247. An authenticated backend user with the `cms.manage_pages`, `cms.manage_layouts`, or `cms.manage_partials` permissions who would **normally** not be permitted to provide PHP code to be executed by the CMS due to `cms.enableSafeMode` being enabled is able to write specific Twig code to escape the Twig sandbox and execute arbitrary PHP. This is not a problem for anyone that trusts their users with those permissions to normally write \u0026 manage PHP within the CMS by not having `cms.enableSafeMode` enabled, but would be a problem for anyone relying on `cms.enableSafeMode` to ensure that users with those permissions in production do not have access to write \u0026 execute arbitrary PHP. Issue has been patched in Build 472 (v1.0.472) and v1.1.2. As a workaround, apply https://github.com/octobercms/october/commit/f63519ff1e8d375df30deba63156a2fc97aa9ee7 to your installation manually if unable to upgrade to Build 472 or v1.1.2.",
          "fixed_versions": [
            "1.0.472",
            "1.1.2"
          ],
          "identifier": "CVE-2021-21264",
          "identifiers": [
            "GHSA-fcr8-6q7r-m4wg",
            "CVE-2021-21264"
          ],
          "not_impacted": "All versions before 1.0.471, all versions after 1.0.471 before 1.1.1, all versions after 1.1.1",
          "package_slug": "packagist/october/cms",
          "pubdate": "2021-05-04",
          "solution": "Upgrade to versions 1.0.472, 1.1.2 or above.",
          "title": "Missing Authorization",
          "urls": [
            "https://github.com/octobercms/october/security/advisories/GHSA-fcr8-6q7r-m4wg",
            "https://nvd.nist.gov/vuln/detail/CVE-2021-21264",
            "https://github.com/advisories/GHSA-fcr8-6q7r-m4wg"
          ],
          "uuid": "0a853bd3-c0d2-4fd8-a97f-87a6f07f7eef"
        },
        {
          "affected_range": "\u003c=1.0.471||\u003e=1.1.0,\u003c=1.1.1",
          "affected_versions": "All versions up to 1.0.471, all versions starting from 1.1.0 up to 1.1.1",
          "cvss_v2": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
          "cvss_v3": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2022-10-19",
          "description": "October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. A bypass of CVE-2020-26231 was discovered that has the same impact as CVE-2020-26231 \u0026 CVE-2020-15247. An authenticated backend user with the `cms.manage_pages`, `cms.manage_layouts`, or `cms.manage_partials` permissions who would **normally** not be permitted to provide PHP code to be executed by the CMS due to `cms.enableSafeMode` being enabled is able to write specific Twig code to escape the Twig sandbox and execute arbitrary PHP. This is not a problem for anyone that trusts their users with those permissions to normally write \u0026 manage PHP within the CMS by not having `cms.enableSafeMode` enabled, but would be a problem for anyone relying on `cms.enableSafeMode` to ensure that users with those permissions in production do not have access to write \u0026 execute arbitrary PHP.",
          "fixed_versions": [
            "1.0.472",
            "1.1.2"
          ],
          "identifier": "CVE-2021-21264",
          "identifiers": [
            "CVE-2021-21264",
            "GHSA-fcr8-6q7r-m4wg"
          ],
          "not_impacted": "All versions after 1.0.471 before 1.1.0, all versions after 1.1.1",
          "package_slug": "packagist/october/october",
          "pubdate": "2021-05-03",
          "solution": "Upgrade to versions 1.0.472, 1.1.2 or above.",
          "title": "Missing Authorization",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-21264"
          ],
          "uuid": "667d5ea5-25a1-4b3d-bd4c-0d59c68dd54c"
        }
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                "versionEndIncluding": "1.0.471",
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                "versionEndIncluding": "1.1.1",
                "versionStartIncluding": "1.1.0",
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      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 4.4,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 3.4,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 5.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L",
            "version": "3.1"
          },
          "exploitabilityScore": 1.1,
          "impactScore": 3.7
        }
      },
      "lastModifiedDate": "2022-10-19T19:04Z",
      "publishedDate": "2021-05-03T16:15Z"
    }
  }
}



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