{
  "cveId": "CVE-2021-41270",
  "url": "https://patchblox.com/security/cve/CVE-2021-41270",
  "summary": "CVE-2021-41270 is fixed in 64 products on 1 platform, first by php-symfony 4.3.8\u002Bdfsg-1ubuntu1\u002Besm1, released November 24, 2021. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "symfony: Symfony/Serializer handles serializing and deserializing data structures for Symfony, a PHP framework for web and con...",
  "description": "Symfony/Serializer handles serializing and deserializing data structures for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Symfony versions 4.1.0 before 4.4.35 and versions 5.0.0 before 5.3.12 are vulnerable to CSV injection, also known as formula injection. In Symfony 4.1, maintainers added the opt-in \u0060csv_escape_formulas\u0060 option in the \u0060CsvEncoder\u0060, to prefix all cells starting with \u0060=\u0060, \u0060\u002B\u0060, \u0060-\u0060 or \u0060@\u0060 with a tab \u0060\\t\u0060. Since then, OWASP added 2 chars in that list: Tab (0x09) and Carriage return (0x0D). This makes the previous prefix char (Tab \u0060\\t\u0060) part of the vulnerable characters, and OWASP suggests using the single quote \u0060\u0027\u0060 for prefixing the value. Starting with versions 4.4.34 and 5.3.12, Symfony now follows the OWASP recommendations and uses the single quote \u0060\u0027\u0060 to prefix formulas and add the prefix to cells starting by \u0060\\t\u0060, \u0060\\r\u0060 as well as \u0060=\u0060, \u0060\u002B\u0060, \u0060-\u0060 and \u0060@\u0060.",
  "published": "2021-11-24T11:15:00Z",
  "severity": "medium",
  "cvss": 6.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
  "epss": 0.014,
  "epssPercentile": 0.72654,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "php-symfony",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.3.8\u002Bdfsg-1ubuntu1\u002Besm1",
      "fix": "php-symfony 4.3.8\u002Bdfsg-1ubuntu1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-php-symfony-4.3.8-dfsg-1ubuntu1-esm1",
      "released": "2021-11-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "php-symfony-amazon-mailer",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.3.8\u002Bdfsg-1ubuntu1\u002Besm1",
      "fix": "php-symfony-amazon-mailer 4.3.8\u002Bdfsg-1ubuntu1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-php-symfony-amazon-mailer-4.3.8-dfsg-1ubuntu1-esm1",
      "released": "2021-11-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "php-symfony-asset",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "4.3.8\u002Bdfsg-1ubuntu1\u002Besm1",
      "fix": "php-symfony-asset 4.3.8\u002Bdfsg-1ubuntu1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-php-symfony-asset-4.3.8-dfsg-1ubuntu1-esm1",
      "released": "2021-11-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "php-symfony-browser-kit",
      "release": "Ubuntu 20.04 LTS (focal)",
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      "fix": "php-symfony-browser-kit 4.3.8\u002Bdfsg-1ubuntu1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-php-symfony-browser-kit-4.3.8-dfsg-1ubuntu1-esm1",
      "released": "2021-11-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "php-symfony-cache",
      "release": "Ubuntu 20.04 LTS (focal)",
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      "fix": "php-symfony-cache 4.3.8\u002Bdfsg-1ubuntu1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-php-symfony-cache-4.3.8-dfsg-1ubuntu1-esm1",
      "released": "2021-11-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "php-symfony-config",
      "release": "Ubuntu 20.04 LTS (focal)",
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      "fix": "php-symfony-config 4.3.8\u002Bdfsg-1ubuntu1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-php-symfony-config-4.3.8-dfsg-1ubuntu1-esm1",
      "released": "2021-11-24T11:15:00Z"
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      "product": "php-symfony-console",
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      "released": "2021-11-24T11:15:00Z"
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    {
      "platform": "linux",
      "product": "php-symfony-css-selector",
      "release": "Ubuntu 20.04 LTS (focal)",
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      "fix": "php-symfony-css-selector 4.3.8\u002Bdfsg-1ubuntu1\u002Besm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-php-symfony-css-selector-4.3.8-dfsg-1ubuntu1-esm1",
      "released": "2021-11-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "php-symfony-debug",
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      "product": "php-symfony-debug-bundle",
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      "released": "2021-11-24T11:15:00Z"
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      "product": "php-symfony-dom-crawler",
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      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-php-symfony-expression-language-4.3.8-dfsg-1ubuntu1-esm1",
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    {
      "platform": "linux",
      "product": "php-symfony-inflector",
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    {
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    {
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      "product": "php-symfony-ldap",
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    {
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      "released": "2021-11-24T11:15:00Z"
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    {
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      "product": "php-symfony-mailchimp-mailer",
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      "released": "2021-11-24T11:15:00Z"
    },
    {
      "platform": "linux",
      "product": "php-symfony-postmark-mailer",
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