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
{ "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" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "support@hackerone.com", "ID": "CVE-2020-8166", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "https://github.com/rails/rails", "version": { "version_data": [ { "version_value": "Fixed in 5.2.4.3, 6.0.3.1" } ] } } ] }, "vendor_name": "n/a" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "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." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "Cross-Site Request Forgery (CSRF) (CWE-352)" } ] } ] }, "references": { "reference_data": [ { "name": "https://hackerone.com/reports/732415", "refsource": "MISC", "url": "https://hackerone.com/reports/732415" }, { "name": "https://groups.google.com/g/rubyonrails-security/c/NOjKiGeXUgw", "refsource": "MISC", "url": "https://groups.google.com/g/rubyonrails-security/c/NOjKiGeXUgw" }, { "name": "DSA-4766", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2020/dsa-4766" } ] } }, "github.com/rubysec/ruby-advisory-db": { "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" } ] }, "nvd.nist.gov": { "configurations": { "CVE_data_version": "4.0", "nodes": [ { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:a:rubyonrails:rails:*:*:*:*:*:*:*:*", "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" }, { "children": [], "cpe_match": [ { "cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true } ], "operator": "OR" } ] }, "cve": { "CVE_data_meta": { "ASSIGNER": "cve-assignments@hackerone.com", "ID": "CVE-2020-8166" }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "en", "value": "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." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "en", "value": "CWE-352" } ] } ] }, "references": { "reference_data": [ { "name": "https://groups.google.com/g/rubyonrails-security/c/NOjKiGeXUgw", "refsource": "MISC", "tags": [ "Mailing List", "Patch", "Third Party Advisory" ], "url": "https://groups.google.com/g/rubyonrails-security/c/NOjKiGeXUgw" }, { "name": "https://hackerone.com/reports/732415", "refsource": "MISC", "tags": [ "Exploit", "Third Party Advisory" ], "url": "https://hackerone.com/reports/732415" }, { "name": "DSA-4766", "refsource": "DEBIAN", "tags": [ "Third Party Advisory" ], "url": "https://www.debian.org/security/2020/dsa-4766" } ] } }, "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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- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.