GHSA-gp6m-fq6h-cjcx: Openmage/magento lts Cross-Site Scripting Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-gp6m-fq6h-cjcx",
  "modified" : "2024-03-04T04:29:16Z",
  "published" : "2024-02-27T21:47:58Z",
  "aliases" : [ ],
  "summary" : "Magento LTS vulnerable to stored XSS in admin file form",
  "details" : "### Summary\nOpenMage is affected by a stored Cross-Site Scripting (XSS) vulnerability that could be abused by a low-privileged attacker to inject malicious scripts into vulnerable form fields.\n\n### Details\n`Mage_Adminhtml_Block_System_Config_Form_Field_File` does not escape filename value in certain situations.\nSame as: https://nvd.nist.gov/vuln/detail/CVE-2024-20717\n\n### PoC\n1. Create empty file with this filename: `<img src=x onerror=alert(1)>.crt`\n2. Go to _System_ > _Configuration_ > _Sales | Payment Methonds_.\n3. Click **Configure** on _PayPal Express Checkout_.\n4. Choose **API Certificate** from dropdown _API Authentication Methods_.\n5. Choose the XSS-file and click **Save Config**.\n6. Profit, alerts \"1\" -> XSS.\n7. Reload, alerts \"1\" -> Stored XSS.\n\n### Impact\nAffects admins that have access to any fileupload field in admin in core or custom implementations.\nMalicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "openmage/magento-lts"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "20.0.0"
      }, {
        "fixed" : "20.5.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "openmage/magento-lts"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "19.5.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/OpenMage/magento-lts/security/advisories/GHSA-gp6m-fq6h-cjcx"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-20717"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/OpenMage/magento-lts"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-02-27T21:47:58Z",
    "nvd_published_at" : null
  }
}