GSD-2015-7579
Vulnerability from gsd - Updated: 2016-01-25 00:00Details
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
{
"GSD": {
"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": {
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "rails-html-sanitizer",
"purl": "pkg:gem/rails-html-sanitizer"
}
}
],
"aliases": [
"CVE-2015-7579",
"GHSA-r9c2-cr39-c8g6"
],
"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",
"references": [
{
"type": "WEB",
"url": "https://groups.google.com/forum/#!topic/rubyonrails-security/OU9ugTZcbjc"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": 6.1,
"type": "CVSS_V3"
}
],
"summary": "XSS vulnerability in rails-html-sanitizer"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "secalert@redhat.com",
"ID": "CVE-2015-7579",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "n/a",
"version": {
"version_data": [
{
"version_value": "n/a"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "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."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/rails/rails-html-sanitizer/commit/49dfc1584c5b8e35a4ffabf8356ba3df025e8d3f",
"refsource": "CONFIRM",
"url": "https://github.com/rails/rails-html-sanitizer/commit/49dfc1584c5b8e35a4ffabf8356ba3df025e8d3f"
},
{
"name": "[ruby-security-ann] 20160125 [CVE-2015-7579] XSS vulnerability in rails-html-sanitizer",
"refsource": "MLIST",
"url": "https://groups.google.com/forum/message/raw?msg=ruby-security-ann/OU9ugTZcbjc/uksRkSxZEgAJ"
},
{
"name": "FEDORA-2016-3a2606f993",
"refsource": "FEDORA",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178046.html"
},
{
"name": "SUSE-SU-2016:1146",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00053.html"
},
{
"name": "1034816",
"refsource": "SECTRACK",
"url": "http://www.securitytracker.com/id/1034816"
},
{
"name": "[oss-security] 20160125 [CVE-2015-7579] XSS vulnerability in rails-html-sanitizer",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2016/01/25/12"
},
{
"name": "FEDORA-2016-59ce8b61dd",
"refsource": "FEDORA",
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178064.html"
},
{
"name": "SUSE-SU-2016:0391",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00024.html"
},
{
"name": "openSUSE-SU-2016:0356",
"refsource": "SUSE",
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00014.html"
}
]
}
},
"github.com/rubysec/ruby-advisory-db": {
"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",
"ghsa": "r9c2-cr39-c8g6",
"patched_versions": [
"\u003e= 1.0.3"
],
"title": "XSS vulnerability in rails-html-sanitizer",
"unaffected_versions": [
"~\u003e 1.0.0",
"~\u003e 1.0.1"
],
"url": "https://groups.google.com/forum/#!topic/rubyonrails-security/OU9ugTZcbjc"
},
"gitlab.com": {
"advisories": [
{
"affected_range": "1.0.2",
"affected_versions": "Version 1.0.2",
"credit": "Arthur Neves from GitHub and Spyros Livathinos from Zendesk",
"cvss_v2": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
"cvss_v3": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"cwe_ids": [
"CWE-1035",
"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`. ",
"fixed_versions": [
"1.0.3"
],
"identifier": "CVE-2015-7579",
"identifiers": [
"CVE-2015-7579"
],
"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"
}
]
},
"nvd.nist.gov": {
"configurations": {
"CVE_data_version": "4.0",
"nodes": [
{
"children": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:html_sanitizer:*:*:*:*:*:ruby:*:*",
"cpe_name": [],
"versionEndIncluding": "1.0.2",
"vulnerable": true
}
],
"operator": "OR"
},
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:5.0.0:beta3:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:5.0.0:beta2:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.5:rc1:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.5:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.1:rc3:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.1:rc2:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.0:beta2:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.0:beta1:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:5.0.0:beta1.1:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:5.0.0:beta1:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.4:rc1:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.4:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.1:rc1:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.1:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.0:rc3:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.0:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.5.1:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.5:rc2:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.2:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.1:rc4:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.0:beta4:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.0:beta3:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.6:rc1:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.5.2:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.3:rc1:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.3:*:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.0:rc2:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
},
{
"cpe23Uri": "cpe:2.3:a:rubyonrails:rails:4.2.0:rc1:*:*:*:*:*:*",
"cpe_name": [],
"vulnerable": false
}
],
"operator": "OR"
}
],
"cpe_match": [],
"operator": "AND"
}
]
},
"cve": {
"CVE_data_meta": {
"ASSIGNER": "secalert@redhat.com",
"ID": "CVE-2015-7579"
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "en",
"value": "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."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-79"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "[oss-security] 20160125 [CVE-2015-7579] XSS vulnerability in rails-html-sanitizer",
"refsource": "MLIST",
"tags": [],
"url": "http://www.openwall.com/lists/oss-security/2016/01/25/12"
},
{
"name": "[ruby-security-ann] 20160125 [CVE-2015-7579] XSS vulnerability in rails-html-sanitizer",
"refsource": "MLIST",
"tags": [],
"url": "https://groups.google.com/forum/message/raw?msg=ruby-security-ann/OU9ugTZcbjc/uksRkSxZEgAJ"
},
{
"name": "https://github.com/rails/rails-html-sanitizer/commit/49dfc1584c5b8e35a4ffabf8356ba3df025e8d3f",
"refsource": "CONFIRM",
"tags": [],
"url": "https://github.com/rails/rails-html-sanitizer/commit/49dfc1584c5b8e35a4ffabf8356ba3df025e8d3f"
},
{
"name": "SUSE-SU-2016:1146",
"refsource": "SUSE",
"tags": [],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00053.html"
},
{
"name": "FEDORA-2016-3a2606f993",
"refsource": "FEDORA",
"tags": [],
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178046.html"
},
{
"name": "FEDORA-2016-59ce8b61dd",
"refsource": "FEDORA",
"tags": [],
"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178064.html"
},
{
"name": "openSUSE-SU-2016:0356",
"refsource": "SUSE",
"tags": [],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00014.html"
},
{
"name": "SUSE-SU-2016:0391",
"refsource": "SUSE",
"tags": [],
"url": "http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00024.html"
},
{
"name": "1034816",
"refsource": "SECTRACK",
"tags": [],
"url": "http://www.securitytracker.com/id/1034816"
}
]
}
},
"impact": {
"baseMetricV2": {
"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": 6.1,
"baseSeverity": "MEDIUM",
"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"
},
"exploitabilityScore": 2.8,
"impactScore": 2.7
}
},
"lastModifiedDate": "2019-08-08T15:16Z",
"publishedDate": "2016-02-16T02:59Z"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…