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"
}
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"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"
},
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"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",
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"cwe_ids": [
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"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.",
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"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": [
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"https://groups.google.com/g/rubyonrails-security/c/NOjKiGeXUgw",
"https://hackerone.com/reports/732415",
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"uuid": "a13dc08d-0ef1-4f27-87b6-717c9ed8200a"
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"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.",
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"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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"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": 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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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- 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.
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