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ghsa-r9c2-cr39-c8g6
Vulnerability from github
Published
2017-10-24 18:33
Modified
2023-01-24 14:56
Severity ?
Summary
rails-html-sanitizer Cross-site Scripting vulnerability
Details
Cross-site scripting (XSS) vulnerability in the rails-html-sanitizer gem 1.0.2 for Ruby on Rails 4.2.x and 5.x allows remote attackers to inject arbitrary web script or HTML via an HTML entity that is mishandled by the Rails::Html::FullSanitizer class.
{
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "rails-html-sanitizer"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.0.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2015-7579"
],
"database_specific": {
"cwe_ids": [
"CWE-79"
],
"github_reviewed": true,
"github_reviewed_at": "2020-06-16T21:54:13Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "Cross-site scripting (XSS) vulnerability in the rails-html-sanitizer gem 1.0.2 for Ruby on Rails 4.2.x and 5.x allows remote attackers to inject arbitrary web script or HTML via an HTML entity that is mishandled by the `Rails::Html::FullSanitizer` class.",
"id": "GHSA-r9c2-cr39-c8g6",
"modified": "2023-01-24T14:56:23Z",
"published": "2017-10-24T18:33:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-7579"
},
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"type": "WEB",
"url": "https://github.com/rails/rails-html-sanitizer/commit/49dfc1584c5b8e35a4ffabf8356ba3df025e8d3f"
},
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"url": "https://github.com/rails/rails-html-sanitizer"
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"type": "CVSS_V3"
}
],
"summary": "rails-html-sanitizer Cross-site Scripting vulnerability"
}
gsd-2015-7579
Vulnerability from gsd
Modified
2016-01-25 00:00
Details
There is a XSS vulnerability in `Rails::Html::FullSanitizer` used by Action View's `strip_tags`.
This vulnerability has been assigned the CVE identifier CVE-2015-7579.
Versions Affected: 1.0.2
Not affected: 1.0.0, 1.0.1
Fixed Versions: 1.0.3
Impact
------
Due to the way that `Rails::Html::FullSanitizer` is implemented, if an attacker
passes an already escaped HTML entity to the input of Action View's `strip_tags`
these entities will be unescaped what may cause a XSS attack if used in combination
with `raw` or `html_safe`.
For example:
strip_tags("<script>alert('XSS')</script>")
Would generate:
<script>alert('XSS')</script>
After the fix it will generate:
<script>alert('XSS')</script>
All users running an affected release should either upgrade or use one of the
workarounds immediately.
Releases
--------
The FIXED releases are available at the normal locations.
Workarounds
-----------
If you can't upgrade, please use the following monkey patch in an initializer
that is loaded before your application:
```
$ cat config/initializers/strip_tags_fix.rb
class ActionView::Base
def strip_tags(html)
self.class.full_sanitizer.sanitize(html)
end
end
```
Patches
-------
To aid users who aren't able to upgrade immediately we have provided patches
for the two supported release series. They are in git-am format and consist
of a single changeset.
* Do-not-unescape-already-escaped-HTML-entities.patch
Credits
-------
Thank you to Arthur Neves from GitHub and Spyros Livathinos from Zendesk for
reporting the problem and working with us to fix it.
Aliases
Aliases
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"alias": "CVE-2015-7579",
"description": "Cross-site scripting (XSS) vulnerability in the rails-html-sanitizer gem 1.0.2 for Ruby on Rails 4.2.x and 5.x allows remote attackers to inject arbitrary web script or HTML via an HTML entity that is mishandled by the Rails::Html::FullSanitizer class.",
"id": "GSD-2015-7579",
"references": [
"https://www.suse.com/security/cve/CVE-2015-7579.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
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}
}
],
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"details": "There is a XSS vulnerability in `Rails::Html::FullSanitizer` used by Action View\u0027s `strip_tags`.\nThis vulnerability has been assigned the CVE identifier CVE-2015-7579.\n\nVersions Affected: 1.0.2\nNot affected: 1.0.0, 1.0.1\nFixed Versions: 1.0.3\n\nImpact\n------\nDue to the way that `Rails::Html::FullSanitizer` is implemented, if an attacker\npasses an already escaped HTML entity to the input of Action View\u0027s `strip_tags`\nthese entities will be unescaped what may cause a XSS attack if used in combination\nwith `raw` or `html_safe`.\n\nFor example:\n\n strip_tags(\"\u0026lt;script\u0026gt;alert(\u0027XSS\u0027)\u0026lt;/script\u0026gt;\")\n\nWould generate:\n\n \u003cscript\u003ealert(\u0027XSS\u0027)\u003c/script\u003e\n\nAfter the fix it will generate:\n\n \u0026lt;script\u0026gt;alert(\u0027XSS\u0027)\u0026lt;/script\u0026gt;\n\nAll users running an affected release should either upgrade or use one of the\nworkarounds immediately.\n\nReleases\n--------\nThe FIXED releases are available at the normal locations.\n\nWorkarounds\n-----------\nIf you can\u0027t upgrade, please use the following monkey patch in an initializer\nthat is loaded before your application:\n\n```\n$ cat config/initializers/strip_tags_fix.rb\nclass ActionView::Base\n def strip_tags(html)\n self.class.full_sanitizer.sanitize(html)\n end\nend\n```\n\nPatches\n-------\nTo aid users who aren\u0027t able to upgrade immediately we have provided patches\nfor the two supported release series. They are in git-am format and consist\nof a single changeset.\n\n* Do-not-unescape-already-escaped-HTML-entities.patch\n\nCredits\n-------\nThank you to Arthur Neves from GitHub and Spyros Livathinos from Zendesk for\nreporting the problem and working with us to fix it.\n",
"id": "GSD-2015-7579",
"modified": "2016-01-25T00:00:00.000Z",
"published": "2016-01-25T00:00:00.000Z",
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"url": "https://groups.google.com/forum/#!topic/rubyonrails-security/OU9ugTZcbjc"
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"cve": "2015-7579",
"cvss_v3": 6.1,
"date": "2016-01-25",
"description": "There is a XSS vulnerability in `Rails::Html::FullSanitizer` used by Action View\u0027s `strip_tags`.\nThis vulnerability has been assigned the CVE identifier CVE-2015-7579.\n\nVersions Affected: 1.0.2\nNot affected: 1.0.0, 1.0.1\nFixed Versions: 1.0.3\n\nImpact\n------\nDue to the way that `Rails::Html::FullSanitizer` is implemented, if an attacker\npasses an already escaped HTML entity to the input of Action View\u0027s `strip_tags`\nthese entities will be unescaped what may cause a XSS attack if used in combination\nwith `raw` or `html_safe`.\n\nFor example:\n\n strip_tags(\"\u0026lt;script\u0026gt;alert(\u0027XSS\u0027)\u0026lt;/script\u0026gt;\")\n\nWould generate:\n\n \u003cscript\u003ealert(\u0027XSS\u0027)\u003c/script\u003e\n\nAfter the fix it will generate:\n\n \u0026lt;script\u0026gt;alert(\u0027XSS\u0027)\u0026lt;/script\u0026gt;\n\nAll users running an affected release should either upgrade or use one of the\nworkarounds immediately.\n\nReleases\n--------\nThe FIXED releases are available at the normal locations.\n\nWorkarounds\n-----------\nIf you can\u0027t upgrade, please use the following monkey patch in an initializer\nthat is loaded before your application:\n\n```\n$ cat config/initializers/strip_tags_fix.rb\nclass ActionView::Base\n def strip_tags(html)\n self.class.full_sanitizer.sanitize(html)\n end\nend\n```\n\nPatches\n-------\nTo aid users who aren\u0027t able to upgrade immediately we have provided patches\nfor the two supported release series. They are in git-am format and consist\nof a single changeset.\n\n* Do-not-unescape-already-escaped-HTML-entities.patch\n\nCredits\n-------\nThank you to Arthur Neves from GitHub and Spyros Livathinos from Zendesk for\nreporting the problem and working with us to fix it.\n",
"gem": "rails-html-sanitizer",
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"title": "XSS vulnerability in rails-html-sanitizer",
"unaffected_versions": [
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"~\u003e 1.0.1"
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"url": "https://groups.google.com/forum/#!topic/rubyonrails-security/OU9ugTZcbjc"
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"affected_versions": "Version 1.0.2",
"credit": "Arthur Neves from GitHub and Spyros Livathinos from Zendesk",
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"cvss_v3": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"cwe_ids": [
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"CWE-79",
"CWE-937"
],
"date": "2019-08-08",
"description": "Due to the way that `Rails::Html::FullSanitizer` is implemented, if an attacker passes an already escaped HTML entity to the input of Action View\u0027s `strip_tags` these entities will be unescaped what may cause a XSS attack if used in combination with `raw` or `html_safe`. ",
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"identifier": "CVE-2015-7579",
"identifiers": [
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],
"not_impacted": "1.0.0, 1.0.1",
"package_slug": "gem/rails-html-sanitizer",
"pubdate": "2016-02-15",
"solution": "Upgrade to latest, apply patch or use workaround. See provided link.",
"title": "XSS vulnerability in strip_tags",
"urls": [
"https://groups.google.com/forum/#!topic/rubyonrails-security/OU9ugTZcbjc"
],
"uuid": "7cff9cf7-f7d3-4b5e-b741-884dee49e1b0"
}
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"impact": {
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"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"
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"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
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"userInteractionRequired": true
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"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.0"
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"lastModifiedDate": "2019-08-08T15:16Z",
"publishedDate": "2016-02-16T02:59Z"
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}
}
cve-2015-7579
Vulnerability from cvelistv5
Published
2016-02-16 02:00
Modified
2024-08-06 07:51
Severity ?
EPSS score ?
Summary
Cross-site scripting (XSS) vulnerability in the rails-html-sanitizer gem 1.0.2 for Ruby on Rails 4.2.x and 5.x allows remote attackers to inject arbitrary web script or HTML via an HTML entity that is mishandled by the Rails::Html::FullSanitizer class.
References
| ▼ | URL | Tags |
|---|---|---|
| https://github.com/rails/rails-html-sanitizer/commit/49dfc1584c5b8e35a4ffabf8356ba3df025e8d3f | x_refsource_CONFIRM | |
| https://groups.google.com/forum/message/raw?msg=ruby-security-ann/OU9ugTZcbjc/uksRkSxZEgAJ | mailing-list, x_refsource_MLIST | |
| http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178046.html | vendor-advisory, x_refsource_FEDORA | |
| http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00053.html | vendor-advisory, x_refsource_SUSE | |
| http://www.securitytracker.com/id/1034816 | vdb-entry, x_refsource_SECTRACK | |
| http://www.openwall.com/lists/oss-security/2016/01/25/12 | mailing-list, x_refsource_MLIST | |
| http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178064.html | vendor-advisory, x_refsource_FEDORA | |
| http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00024.html | vendor-advisory, x_refsource_SUSE | |
| http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00014.html | vendor-advisory, x_refsource_SUSE |
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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.
- 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.