gsd-2020-8167
Vulnerability from gsd
Modified
2020-05-18 00:00
Details
There is an vulnerability in rails-ujs that allows attackers to send CSRF tokens to wrong domains. Versions Affected: rails <= 6.0.3 Not affected: Applications which don't use rails-ujs. Fixed Versions: rails >= 5.2.4.3, rails >= 6.0.3.1 Impact ------ This is a regression of CVE-2015-1840. In the scenario where an attacker might be able to control the href attribute of an anchor tag or the action attribute of a form tag that will trigger a POST action, the attacker can set the href or action to a cross-origin URL, and the CSRF token will be sent. Workarounds ----------- To work around this problem, change code that allows users to control the href attribute of an anchor tag or the action attribute of a form tag to filter the user parameters. For example, code like this: link_to params to code like this: link_to filtered_params def filtered_params # Filter just the parameters that you trust end
Aliases
Aliases
CVE-2020-8167


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-8167",
    "description": "A CSRF vulnerability exists in rails \u003c= 6.0.3 rails-ujs module that could allow attackers to send CSRF tokens to wrong domains.",
    "id": "GSD-2020-8167",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-8167.html",
      "https://www.debian.org/security/2020/dsa-4766",
      "https://access.redhat.com/errata/RHSA-2021:1313"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "actionview",
            "purl": "pkg:gem/actionview"
          }
        }
      ],
      "aliases": [
        "CVE-2020-8167",
        "GHSA-xq5j-gw7f-jgj8"
      ],
      "details": "There is an vulnerability in rails-ujs that allows attackers to send\nCSRF tokens to wrong domains.\n\nVersions Affected:  rails \u003c= 6.0.3\nNot affected:       Applications which don\u0027t use rails-ujs.\nFixed Versions:     rails \u003e= 5.2.4.3, rails \u003e= 6.0.3.1\n\nImpact\n------\n\nThis is a regression of CVE-2015-1840.\n\nIn the scenario where an attacker might be able to control the href attribute of an anchor tag or\nthe action attribute of a form tag that will trigger a POST action, the attacker can set the\nhref or action to a cross-origin URL, and the CSRF token will be sent.\n\nWorkarounds\n-----------\n\nTo work around this problem, change code that allows users to control the href attribute of an anchor\ntag or the action attribute of a form tag to filter the user parameters.\n\nFor example, code like this:\n\n    link_to params\n\nto code like this:\n\n    link_to filtered_params\n\n    def filtered_params\n      # Filter just the parameters that you trust\n    end\n",
      "id": "GSD-2020-8167",
      "modified": "2020-05-18T00:00:00.000Z",
      "published": "2020-05-18T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://groups.google.com/forum/#!topic/rubyonrails-security/x9DixQDG9a0"
        }
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 6.5,
          "type": "CVSS_V3"
        }
      ],
      "summary": "CSRF Vulnerability in rails-ujs"
    }
  },
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      "cve": "2020-8167",
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      "date": "2020-05-18",
      "description": "There is an vulnerability in rails-ujs that allows attackers to send\nCSRF tokens to wrong domains.\n\nVersions Affected:  rails \u003c= 6.0.3\nNot affected:       Applications which don\u0027t use rails-ujs.\nFixed Versions:     rails \u003e= 5.2.4.3, rails \u003e= 6.0.3.1\n\nImpact\n------\n\nThis is a regression of CVE-2015-1840.\n\nIn the scenario where an attacker might be able to control the href attribute of an anchor tag or\nthe action attribute of a form tag that will trigger a POST action, the attacker can set the\nhref or action to a cross-origin URL, and the CSRF token will be sent.\n\nWorkarounds\n-----------\n\nTo work around this problem, change code that allows users to control the href attribute of an anchor\ntag or the action attribute of a form tag to filter the user parameters.\n\nFor example, code like this:\n\n    link_to params\n\nto code like this:\n\n    link_to filtered_params\n\n    def filtered_params\n      # Filter just the parameters that you trust\n    end\n",
      "framework": "rails",
      "gem": "actionview",
      "ghsa": "xq5j-gw7f-jgj8",
      "patched_versions": [
        "~\u003e 5.2.4, \u003e= 5.2.4.3",
        "\u003e= 6.0.3.1"
      ],
      "title": "CSRF Vulnerability in rails-ujs",
      "url": "https://groups.google.com/forum/#!topic/rubyonrails-security/x9DixQDG9a0"
    },
    "gitlab.com": {
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          "cwe_ids": [
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            "CWE-937"
          ],
          "date": "2020-09-25",
          "description": "A CSRF vulnerability exists in rails rails-ujs module that could allow attackers to send CSRF tokens to wrong domains.",
          "fixed_versions": [
            "6.0.3.1"
          ],
          "identifier": "CVE-2020-8167",
          "identifiers": [
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          ],
          "not_impacted": "All versions after 6.0.3",
          "package_slug": "gem/actionview",
          "pubdate": "2020-06-19",
          "solution": "Upgrade to version 6.0.3.1 or above.",
          "title": "Cross-Site Request Forgery (CSRF)",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-8167",
            "https://hackerone.com/reports/189878",
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          "uuid": "52bdf6de-f5b1-44b4-9c48-3996983bc468"
        },
        {
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            "CWE-937"
          ],
          "date": "2021-10-21",
          "description": "A CSRF vulnerability exists in Rails\u0027 rails-ujs module that could allow attackers to send CSRF tokens to wrong domains.",
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          ],
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          "package_slug": "gem/rails",
          "pubdate": "2020-06-19",
          "solution": "Upgrade to versions 5.2.4.3, 6.0.3.1 or above.",
          "title": "Cross-Site Request Forgery (CSRF)",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2020-8167"
          ],
          "uuid": "605d20bc-aa32-487e-a69e-1b4428beff14"
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      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "confidentialityImpact": "NONE",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-10-21T14:35Z",
      "publishedDate": "2020-06-19T18:15Z"
    }
  }
}


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