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
{
"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"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "support@hackerone.com",
"ID": "CVE-2020-8167",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "http://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 vulnerability exists in rails \u003c= 6.0.3 rails-ujs module that could allow attackers to send CSRF tokens to wrong domains."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Cross-Site Request Forgery (CSRF) (CWE-352)"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://hackerone.com/reports/189878",
"refsource": "MISC",
"url": "https://hackerone.com/reports/189878"
},
{
"name": "https://groups.google.com/g/rubyonrails-security/c/x9DixQDG9a0",
"refsource": "MISC",
"url": "https://groups.google.com/g/rubyonrails-security/c/x9DixQDG9a0"
},
{
"name": "DSA-4766",
"refsource": "DEBIAN",
"url": "https://www.debian.org/security/2020/dsa-4766"
}
]
}
},
"github.com/rubysec/ruby-advisory-db": {
"cve": "2020-8167",
"cvss_v3": 6.5,
"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": {
"advisories": [
{
"affected_range": "\u003c=6.0.3",
"affected_versions": "All versions up to 6.0.3",
"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:H/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-352",
"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": [
"CVE-2020-8167"
],
"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",
"https://groups.google.com/g/rubyonrails-security/c/x9DixQDG9a0",
"https://www.debian.org/security/2020/dsa-4766"
],
"uuid": "52bdf6de-f5b1-44b4-9c48-3996983bc468"
},
{
"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:H/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-352",
"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.",
"fixed_versions": [
"5.2.4.3",
"6.0.3.1"
],
"identifier": "CVE-2020-8167",
"identifiers": [
"CVE-2020-8167"
],
"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": "2020-06-19",
"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"
}
]
},
"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-2020-8167"
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "en",
"value": "A CSRF vulnerability exists in rails \u003c= 6.0.3 rails-ujs module that could allow attackers to send CSRF tokens to wrong domains."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-352"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://hackerone.com/reports/189878",
"refsource": "MISC",
"tags": [
"Exploit",
"Third Party Advisory"
],
"url": "https://hackerone.com/reports/189878"
},
{
"name": "https://groups.google.com/g/rubyonrails-security/c/x9DixQDG9a0",
"refsource": "MISC",
"tags": [
"Mailing List",
"Patch",
"Third Party Advisory"
],
"url": "https://groups.google.com/g/rubyonrails-security/c/x9DixQDG9a0"
},
{
"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": 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"
}
}
}
Loading...