ghsa-xq5j-gw7f-jgj8
Vulnerability from github
Published
2020-07-07 16:34
Modified
2023-08-08 15:14
Severity ?
Summary
CSRF Vulnerability in rails-ujs
Details
There is a 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
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 5.2.4.2"
},
"package": {
"ecosystem": "RubyGems",
"name": "actionview"
},
"ranges": [
{
"events": [
{
"introduced": "5.0.0"
},
{
"fixed": "5.2.4.3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 6.0.3"
},
"package": {
"ecosystem": "RubyGems",
"name": "actionview"
},
"ranges": [
{
"events": [
{
"introduced": "6.0.0"
},
{
"fixed": "6.0.3.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2020-8167"
],
"database_specific": {
"cwe_ids": [
"CWE-352"
],
"github_reviewed": true,
"github_reviewed_at": "2020-07-07T15:51:37Z",
"nvd_published_at": "2020-06-19T18:15:00Z",
"severity": "MODERATE"
},
"details": "There is a vulnerability in rails-ujs that allows attackers to send CSRF 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 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.\n\nWorkarounds\n-----------\n\nTo 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.\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",
"id": "GHSA-xq5j-gw7f-jgj8",
"modified": "2023-08-08T15:14:47Z",
"published": "2020-07-07T16:34:10Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8167"
},
{
"type": "WEB",
"url": "https://hackerone.com/reports/189878"
},
{
"type": "WEB",
"url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionview/CVE-2020-8167.yml"
},
{
"type": "WEB",
"url": "https://groups.google.com/forum/#!topic/rubyonrails-security/x9DixQDG9a0"
},
{
"type": "WEB",
"url": "https://groups.google.com/g/rubyonrails-security/c/x9DixQDG9a0"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2020/dsa-4766"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "CSRF Vulnerability in rails-ujs"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.