GSD-2020-26255

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
Kirby is a CMS. In Kirby CMS (getkirby/cms) before version 3.4.5, and Kirby Panel before version 2.5.14 , an editor with full access to the Kirby Panel can upload a PHP .phar file and execute it on the server. This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users, as they can gain access to the server with such a Phar file. Visitors without Panel access *cannot* use this attack vector. The problem has been patched in Kirby 2.5.14 and Kirby 3.4.5. Please update to one of these or a later version to fix the vulnerability. Note: Kirby 2 reaches end of life on December 31, 2020. We therefore recommend to upgrade your Kirby 2 sites to Kirby 3. If you cannot upgrade, we still recommend to update to Kirby 2.5.14.
Aliases
Aliases
CVE-2020-26255
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{
  "GSD": {
    "alias": "CVE-2020-26255",
    "description": "Kirby is a CMS. In Kirby CMS (getkirby/cms) before version 3.4.5, and Kirby Panel before version 2.5.14 , an editor with full access to the Kirby Panel can upload a PHP .phar file and execute it on the server. This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users, as they can gain access to the server with such a Phar file. Visitors without Panel access *cannot* use this attack vector. The problem has been patched in Kirby 2.5.14 and Kirby 3.4.5. Please update to one of these or a later version to fix the vulnerability. Note: Kirby 2 reaches end of life on December 31, 2020. We therefore recommend to upgrade your Kirby 2 sites to Kirby 3. If you cannot upgrade, we still recommend to update to Kirby 2.5.14.",
    "id": "GSD-2020-26255"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-26255"
      ],
      "details": "Kirby is a CMS. In Kirby CMS (getkirby/cms) before version 3.4.5, and Kirby Panel before version 2.5.14 , an editor with full access to the Kirby Panel can upload a PHP .phar file and execute it on the server. This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users, as they can gain access to the server with such a Phar file. Visitors without Panel access *cannot* use this attack vector. The problem has been patched in Kirby 2.5.14 and Kirby 3.4.5. Please update to one of these or a later version to fix the vulnerability. Note: Kirby 2 reaches end of life on December 31, 2020. We therefore recommend to upgrade your Kirby 2 sites to Kirby 3. If you cannot upgrade, we still recommend to update to Kirby 2.5.14.",
      "id": "GSD-2020-26255",
      "modified": "2023-12-13T01:22:08.664512Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2020-26255",
        "STATE": "PUBLIC",
        "TITLE": "PHP Phar archives could be uploaded and executed in Kirby"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "kirby",
                    "version": {
                      "version_data": [
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                          "version_value": "\u003c 3.4.5"
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      "description": {
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            "lang": "eng",
            "value": "Kirby is a CMS. In Kirby CMS (getkirby/cms) before version 3.4.5, and Kirby Panel before version 2.5.14 , an editor with full access to the Kirby Panel can upload a PHP .phar file and execute it on the server. This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users, as they can gain access to the server with such a Phar file. Visitors without Panel access *cannot* use this attack vector. The problem has been patched in Kirby 2.5.14 and Kirby 3.4.5. Please update to one of these or a later version to fix the vulnerability. Note: Kirby 2 reaches end of life on December 31, 2020. We therefore recommend to upgrade your Kirby 2 sites to Kirby 3. If you cannot upgrade, we still recommend to update to Kirby 2.5.14."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.8,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-434 Unrestricted Upload of File with Dangerous Type"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://packagist.org/packages/getkirby/cms",
            "refsource": "MISC",
            "url": "https://packagist.org/packages/getkirby/cms"
          },
          {
            "name": "https://packagist.org/packages/getkirby/panel",
            "refsource": "MISC",
            "url": "https://packagist.org/packages/getkirby/panel"
          },
          {
            "name": "https://github.com/getkirby/kirby/security/advisories/GHSA-g3h8-cg9x-47qw",
            "refsource": "CONFIRM",
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          },
          {
            "name": "https://github.com/getkirby/kirby/releases/tag/3.4.5",
            "refsource": "MISC",
            "url": "https://github.com/getkirby/kirby/releases/tag/3.4.5"
          },
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      },
      "source": {
        "advisory": "GHSA-g3h8-cg9x-47qw",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
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          "affected_versions": "All versions starting from 3.0.0 before 3.4.5",
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          "date": "2021-01-07",
          "description": "Kirby is a CMS. In Kirby CMS (getkirby/cms) before version 3.4.5, and Kirby Panel before version 2.5.14 , an editor with full access to the Kirby Panel can upload a PHP .phar file and execute it on the server. This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users, as they can gain access to the server with such a Phar file. Visitors without Panel access *cannot* use this attack vector. The problem has been patched in Kirby 2.5.14 and Kirby 3.4.5. Please update to one of these or a later version to fix the vulnerability. Note: Kirby 2 reaches end of life on December 31, 2020. We therefore recommend to upgrade your Kirby 2 sites to Kirby 3. If you cannot upgrade, we still recommend to update to Kirby 2.5.14.",
          "fixed_versions": [
            "3.4.5"
          ],
          "identifier": "CVE-2020-26255",
          "identifiers": [
            "GHSA-g3h8-cg9x-47qw",
            "CVE-2020-26255"
          ],
          "not_impacted": "All versions before 3.0.0, all versions starting from 3.4.5",
          "package_slug": "packagist/getkirby/cms",
          "pubdate": "2020-12-08",
          "solution": "Upgrade to version 3.4.5 or above.",
          "title": "Unrestricted Upload of File with Dangerous Type",
          "urls": [
            "https://github.com/getkirby/kirby/security/advisories/GHSA-g3h8-cg9x-47qw",
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            "https://github.com/getkirby/kirby/commit/db8f371b13036861c9cc5ba3e85e27f73fce5e09",
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          ],
          "uuid": "1f232f01-037b-4dfe-a1c6-5fe70b0645cb"
        },
        {
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          "affected_versions": "All versions before 2.5.14",
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          ],
          "date": "2021-01-07",
          "description": "Kirby is a CMS. In Kirby CMS (getkirby/cms) before version 3.4.5, and Kirby Panel before version 2.5.14 , an editor with full access to the Kirby Panel can upload a PHP .phar file and execute it on the server. This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users, as they can gain access to the server with such a Phar file. Visitors without Panel access *cannot* use this attack vector. The problem has been patched in Kirby 2.5.14 and Kirby 3.4.5. Please update to one of these or a later version to fix the vulnerability. Note: Kirby 2 reaches end of life on December 31, 2020. We therefore recommend to upgrade your Kirby 2 sites to Kirby 3. If you cannot upgrade, we still recommend to update to Kirby 2.5.14.",
          "fixed_versions": [
            "2.5.14"
          ],
          "identifier": "CVE-2020-26255",
          "identifiers": [
            "GHSA-g3h8-cg9x-47qw",
            "CVE-2020-26255"
          ],
          "not_impacted": "All versions starting from 2.5.14",
          "package_slug": "packagist/getkirby/panel",
          "pubdate": "2020-12-08",
          "solution": "Upgrade to version 2.5.14 or above.",
          "title": "Unrestricted Upload of File with Dangerous Type",
          "urls": [
            "https://github.com/getkirby/kirby/security/advisories/GHSA-g3h8-cg9x-47qw",
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            "https://github.com/getkirby/kirby/commit/db8f371b13036861c9cc5ba3e85e27f73fce5e09",
            "https://github.com/getkirby/kirby/releases/tag/3.4.5",
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            "https://github.com/advisories/GHSA-g3h8-cg9x-47qw"
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          "uuid": "b61dfd3b-8d71-458f-a09c-c1a299ebf70f"
        }
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    },
    "nvd.nist.gov": {
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      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 8.0,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.3,
          "impactScore": 6.0
        }
      },
      "lastModifiedDate": "2020-12-10T14:35Z",
      "publishedDate": "2020-12-08T15:15Z"
    }
  }
}


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Sightings

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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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