gsd-2020-8166
Vulnerability from gsd
Modified
2020-05-18 00:00
Details
It is possible to possible to, given a global CSRF token such as the one present in the authenticity_token meta tag, forge a per-form CSRF token for any action for that session. Versions Affected: rails < 5.2.5, rails < 6.0.4 Not affected: Applications without existing HTML injection vulnerabilities. Fixed Versions: rails >= 5.2.4.3, rails >= 6.0.3.1 Impact ------ Given the ability to extract the global CSRF token, an attacker would be able to construct a per-form CSRF token for that session. Workarounds ----------- This is a low-severity security issue. As such, no workaround is necessarily until such time as the application can be upgraded.
Aliases
Aliases
CVE-2020-8166


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-8166",
    "description": "A CSRF forgery vulnerability exists in rails \u003c 5.2.5, rails \u003c 6.0.4 that makes it possible for an attacker to, given a global CSRF token such as the one present in the authenticity_token meta tag, forge a per-form CSRF token.",
    "id": "GSD-2020-8166",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-8166.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": "actionpack",
            "purl": "pkg:gem/actionpack"
          }
        }
      ],
      "aliases": [
        "CVE-2020-8166",
        "GHSA-jp5v-5gx4-jmj9"
      ],
      "details": "It is possible to possible to, given a global CSRF token such as the one\npresent in the authenticity_token meta tag, forge a per-form CSRF token for\nany action for that session.\n\nVersions Affected:  rails \u003c 5.2.5, rails \u003c 6.0.4\nNot affected:       Applications without existing HTML injection vulnerabilities.\nFixed Versions:     rails \u003e= 5.2.4.3, rails \u003e= 6.0.3.1\n\nImpact\n------\n\nGiven the ability to extract the global CSRF token, an attacker would be able to\nconstruct a per-form CSRF token for that session.\n\nWorkarounds\n-----------\n\nThis is a low-severity security issue. As such, no workaround is necessarily\nuntil such time as the application can be upgraded.\n",
      "id": "GSD-2020-8166",
      "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/NOjKiGeXUgw"
        }
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 4.3,
          "type": "CVSS_V3"
        }
      ],
      "summary": "Ability to forge per-form CSRF tokens given a global CSRF token"
    }
  },
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              "product": {
                "product_data": [
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                    "product_name": "https://github.com/rails/rails",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "Fixed in 5.2.4.3, 6.0.3.1"
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          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Cross-Site Request Forgery (CSRF) (CWE-352)"
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    },
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      "cve": "2020-8166",
      "cvss_v3": 4.3,
      "date": "2020-05-18",
      "description": "It is possible to possible to, given a global CSRF token such as the one\npresent in the authenticity_token meta tag, forge a per-form CSRF token for\nany action for that session.\n\nVersions Affected:  rails \u003c 5.2.5, rails \u003c 6.0.4\nNot affected:       Applications without existing HTML injection vulnerabilities.\nFixed Versions:     rails \u003e= 5.2.4.3, rails \u003e= 6.0.3.1\n\nImpact\n------\n\nGiven the ability to extract the global CSRF token, an attacker would be able to\nconstruct a per-form CSRF token for that session.\n\nWorkarounds\n-----------\n\nThis is a low-severity security issue. As such, no workaround is necessarily\nuntil such time as the application can be upgraded.\n",
      "framework": "rails",
      "gem": "actionpack",
      "ghsa": "jp5v-5gx4-jmj9",
      "patched_versions": [
        "~\u003e 5.2.4, \u003e= 5.2.4.3",
        "\u003e= 6.0.3.1"
      ],
      "title": "Ability to forge per-form CSRF tokens given a global CSRF token",
      "url": "https://groups.google.com/forum/#!topic/rubyonrails-security/NOjKiGeXUgw"
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c5.2.4.3||\u003e=6.0.0 \u003c6.0.3.1||=10.0",
          "affected_versions": "All versions before 5.2.4.3, all versions starting from 6.0.0 before 6.0.3.1, version 10.0",
          "cvss_v2": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-352",
            "CWE-937"
          ],
          "date": "2020-11-20",
          "description": "A CSRF forgery vulnerability exists in rails, rails that makes it possible for an attacker to, given a global CSRF token such as the one present in the authenticity_token meta tag, forge a per-form CSRF token.",
          "fixed_versions": [
            "5.2.4.3",
            "6.0.3.1"
          ],
          "identifier": "CVE-2020-8166",
          "identifiers": [
            "CVE-2020-8166"
          ],
          "not_impacted": "All versions starting from 5.2.4.3 before 6.0.0, all versions starting from 6.0.3.1 before 10.0, all versions after 10.0",
          "package_slug": "gem/actionpack",
          "pubdate": "2020-07-02",
          "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-2020-8166",
            "https://groups.google.com/g/rubyonrails-security/c/NOjKiGeXUgw",
            "https://hackerone.com/reports/732415",
            "https://www.debian.org/security/2020/dsa-4766"
          ],
          "uuid": "a13dc08d-0ef1-4f27-87b6-717c9ed8200a"
        },
        {
          "affected_range": "\u003c5.2.4.3||\u003e=6.0.0 \u003c6.0.3.1",
          "affected_versions": "All versions before 5.2.4.3, all versions starting from 6.0.0 before 6.0.3.1",
          "cvss_v2": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-352",
            "CWE-937"
          ],
          "date": "2020-11-20",
          "description": "A CSRF vulnerability exists in rails that makes it possible for an attacker to, given a global CSRF token such as the one present in the `authenticity_token` meta tag, forge a per-form CSRF token.",
          "fixed_versions": [
            "5.2.4.3",
            "6.0.3.1"
          ],
          "identifier": "CVE-2020-8166",
          "identifiers": [
            "CVE-2020-8166"
          ],
          "not_impacted": "All versions starting from 5.2.4.3 before 6.0.0, all versions starting from 6.0.3.1",
          "package_slug": "gem/rails",
          "pubdate": "2020-07-02",
          "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-2020-8166"
          ],
          "uuid": "d8ff425a-89bf-483c-89cf-28b3e43ecc98"
        }
      ]
    },
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                "cpe_name": [],
                "versionEndExcluding": "5.2.4.3",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "6.0.3.1",
                "versionStartIncluding": "6.0.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
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            "children": [],
            "cpe_match": [
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                "cpe_name": [],
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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": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2020-11-20T17:47Z",
      "publishedDate": "2020-07-02T19:15Z"
    }
  }
}


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