GSD-2022-23519
Vulnerability from gsd - Updated: 2022-12-13 00:00Details
## Summary
There is a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer.
- Versions affected: ALL
- Not affected: NONE
- Fixed versions: 1.4.4
## Impact
A possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer's allowed tags in either of the following ways:
- allow both "math" and "style" elements,
- or allow both "svg" and "style" elements
Code is only impacted if allowed tags are being overridden. Applications may be doing this in four different ways:
1. using application configuration:
```ruby
# In config/application.rb
config.action_view.sanitized_allowed_tags = ["math", "style"]
# or
config.action_view.sanitized_allowed_tags = ["svg", "style"]
```
see https://guides.rubyonrails.org/configuring.html#configuring-action-view
2. using a `:tags` option to the Action View helper `sanitize`:
```
<%= sanitize @comment.body, tags: ["math", "style"] %>
<%# or %>
<%= sanitize @comment.body, tags: ["svg", "style"] %>
```
see https://api.rubyonrails.org/classes/ActionView/Helpers/SanitizeHelper.html#method-i-sanitize
3. using Rails::Html::SafeListSanitizer class method `allowed_tags=`:
```ruby
# class-level option
Rails::Html::SafeListSanitizer.allowed_tags = ["math", "style"]
# or
Rails::Html::SafeListSanitizer.allowed_tags = ["svg", "style"]
```
4. using a `:tags` options to the Rails::Html::SafeListSanitizer instance method `sanitize`:
```ruby
# instance-level option
Rails::Html::SafeListSanitizer.new.sanitize(@article.body, tags: ["math", "style"])
# or
Rails::Html::SafeListSanitizer.new.sanitize(@article.body, tags: ["svg", "style"])
```
All users overriding the allowed tags by any of the above mechanisms to include (("math" or "svg") and "style") should either upgrade or use one of the workarounds immediately.
## Workarounds
Remove "style" from the overridden allowed tags, or remove "math" and "svg" from the overridden allowed tags.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2022-23519",
"id": "GSD-2022-23519",
"references": [
"https://www.suse.com/security/cve/CVE-2022-23519.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-2022-23519",
"GHSA-9h9g-93gc-623h"
],
"details": "## Summary\n\nThere is a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer.\n\n- Versions affected: ALL\n- Not affected: NONE\n- Fixed versions: 1.4.4\n\n## Impact\n\nA possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer\u0027s allowed tags in either of the following ways:\n\n- allow both \"math\" and \"style\" elements,\n- or allow both \"svg\" and \"style\" elements\n\nCode is only impacted if allowed tags are being overridden. Applications may be doing this in four different ways:\n\n1. using application configuration:\n\n ```ruby\n # In config/application.rb\n config.action_view.sanitized_allowed_tags = [\"math\", \"style\"]\n # or\n config.action_view.sanitized_allowed_tags = [\"svg\", \"style\"]\n ```\n\n see https://guides.rubyonrails.org/configuring.html#configuring-action-view\n\n2. using a `:tags` option to the Action View helper `sanitize`:\n\n ```\n \u003c%= sanitize @comment.body, tags: [\"math\", \"style\"] %\u003e\n \u003c%# or %\u003e\n \u003c%= sanitize @comment.body, tags: [\"svg\", \"style\"] %\u003e\n ```\n\n see https://api.rubyonrails.org/classes/ActionView/Helpers/SanitizeHelper.html#method-i-sanitize\n\n3. using Rails::Html::SafeListSanitizer class method `allowed_tags=`:\n\n ```ruby\n # class-level option\n Rails::Html::SafeListSanitizer.allowed_tags = [\"math\", \"style\"]\n # or\n Rails::Html::SafeListSanitizer.allowed_tags = [\"svg\", \"style\"]\n ```\n\n4. using a `:tags` options to the Rails::Html::SafeListSanitizer instance method `sanitize`:\n\n ```ruby\n # instance-level option\n Rails::Html::SafeListSanitizer.new.sanitize(@article.body, tags: [\"math\", \"style\"])\n # or\n Rails::Html::SafeListSanitizer.new.sanitize(@article.body, tags: [\"svg\", \"style\"])\n ```\n\nAll users overriding the allowed tags by any of the above mechanisms to include ((\"math\" or \"svg\") and \"style\") should either upgrade or use one of the workarounds immediately.\n\n## Workarounds\n\nRemove \"style\" from the overridden allowed tags, or remove \"math\" and \"svg\" from the overridden allowed tags.\n",
"id": "GSD-2022-23519",
"modified": "2022-12-13T00:00:00.000Z",
"published": "2022-12-13T00:00:00.000Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h"
},
{
"type": "WEB",
"url": "https://cwe.mitre.org/data/definitions/79.html"
},
{
"type": "WEB",
"url": "https://hackerone.com/reports/1656627"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": 6.1,
"type": "CVSS_V3"
}
],
"summary": "Possible XSS vulnerability with certain configurations of rails-html-sanitizer"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2022-23519",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "rails-html-sanitizer",
"version": {
"version_data": [
{
"version_affected": "=",
"version_value": "\u003c 1.4.4"
}
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"vendor_name": "rails"
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"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
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"lang": "eng",
"value": "rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer\u0027s allowed tags in either of the following ways: allow both \"math\" and \"style\" elements, or allow both \"svg\" and \"style\" elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include \"math\" or \"svg\" and \"style\" should either upgrade or use the following workaround immediately: Remove \"style\" from the overridden allowed tags, or remove \"math\" and \"svg\" from the overridden allowed tags.\n"
}
]
},
"impact": {
"cvss": [
{
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
"version": "3.1"
}
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},
"problemtype": {
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"description": [
{
"cweId": "CWE-79",
"lang": "eng",
"value": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h",
"refsource": "MISC",
"url": "https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h"
},
{
"name": "https://hackerone.com/reports/1656627",
"refsource": "MISC",
"url": "https://hackerone.com/reports/1656627"
},
{
"name": "https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html",
"refsource": "MISC",
"url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html"
}
]
},
"source": {
"advisory": "GHSA-9h9g-93gc-623h",
"discovery": "UNKNOWN"
}
},
"github.com/rubysec/ruby-advisory-db": {
"cve": "2022-23519",
"cvss_v3": 6.1,
"date": "2022-12-13",
"description": "## Summary\n\nThere is a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer.\n\n- Versions affected: ALL\n- Not affected: NONE\n- Fixed versions: 1.4.4\n\n## Impact\n\nA possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer\u0027s allowed tags in either of the following ways:\n\n- allow both \"math\" and \"style\" elements,\n- or allow both \"svg\" and \"style\" elements\n\nCode is only impacted if allowed tags are being overridden. Applications may be doing this in four different ways:\n\n1. using application configuration:\n\n ```ruby\n # In config/application.rb\n config.action_view.sanitized_allowed_tags = [\"math\", \"style\"]\n # or\n config.action_view.sanitized_allowed_tags = [\"svg\", \"style\"]\n ```\n\n see https://guides.rubyonrails.org/configuring.html#configuring-action-view\n\n2. using a `:tags` option to the Action View helper `sanitize`:\n\n ```\n \u003c%= sanitize @comment.body, tags: [\"math\", \"style\"] %\u003e\n \u003c%# or %\u003e\n \u003c%= sanitize @comment.body, tags: [\"svg\", \"style\"] %\u003e\n ```\n\n see https://api.rubyonrails.org/classes/ActionView/Helpers/SanitizeHelper.html#method-i-sanitize\n\n3. using Rails::Html::SafeListSanitizer class method `allowed_tags=`:\n\n ```ruby\n # class-level option\n Rails::Html::SafeListSanitizer.allowed_tags = [\"math\", \"style\"]\n # or\n Rails::Html::SafeListSanitizer.allowed_tags = [\"svg\", \"style\"]\n ```\n\n4. using a `:tags` options to the Rails::Html::SafeListSanitizer instance method `sanitize`:\n\n ```ruby\n # instance-level option\n Rails::Html::SafeListSanitizer.new.sanitize(@article.body, tags: [\"math\", \"style\"])\n # or\n Rails::Html::SafeListSanitizer.new.sanitize(@article.body, tags: [\"svg\", \"style\"])\n ```\n\nAll users overriding the allowed tags by any of the above mechanisms to include ((\"math\" or \"svg\") and \"style\") should either upgrade or use one of the workarounds immediately.\n\n## Workarounds\n\nRemove \"style\" from the overridden allowed tags, or remove \"math\" and \"svg\" from the overridden allowed tags.\n",
"gem": "rails-html-sanitizer",
"ghsa": "9h9g-93gc-623h",
"patched_versions": [
"\u003e= 1.4.4"
],
"related": {
"url": [
"https://cwe.mitre.org/data/definitions/79.html",
"https://hackerone.com/reports/1656627"
]
},
"title": "Possible XSS vulnerability with certain configurations of rails-html-sanitizer",
"url": "https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h"
},
"gitlab.com": {
"advisories": [
{
"affected_range": "\u003c1.4.4",
"affected_versions": "All versions before 1.4.4",
"cvss_v3": "CVSS:3.1/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": "2022-12-16",
"description": "rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer\u0027s allowed tags in either of the following ways: allow both \"math\" and \"style\" elements, or allow both \"svg\" and \"style\" elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include \"math\" or \"svg\" and \"style\" should either upgrade or use the following workaround immediately: Remove \"style\" from the overridden allowed tags, or remove \"math\" and \"svg\" from the overridden allowed tags.",
"fixed_versions": [
"1.4.4"
],
"identifier": "CVE-2022-23519",
"identifiers": [
"CVE-2022-23519",
"GHSA-9h9g-93gc-623h",
"GMS-2022-8299"
],
"not_impacted": "All versions starting from 1.4.4",
"package_slug": "gem/rails-html-sanitizer",
"pubdate": "2022-12-14",
"solution": "Upgrade to version 1.4.4 or above.",
"title": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2022-23519",
"https://hackerone.com/reports/1656627",
"https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h",
"https://github.com/advisories/GHSA-9h9g-93gc-623h"
],
"uuid": "14e9e407-48cc-4c20-ac86-39f71f55fc99"
},
{
"affected_range": "\u003c0",
"affected_versions": "All versions before 1.4.4",
"cwe_ids": [
"CWE-1035",
"CWE-79",
"CWE-937"
],
"date": "2022-12-13",
"description": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027) in rails-html-sanitizer.",
"fixed_versions": [
"1.4.4"
],
"identifier": "GMS-2022-8299",
"identifiers": [
"GHSA-9h9g-93gc-623h",
"GMS-2022-8299",
"CVE-2022-23519"
],
"not_impacted": "All versions starting from 1.4.4",
"package_slug": "gem/rails-html-sanitizer",
"pubdate": "2022-12-13",
"solution": "Upgrade to version 1.4.4 or above.",
"title": "Duplicate of ./gem/rails-html-sanitizer/CVE-2022-23519.yml",
"urls": [
"https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h",
"https://hackerone.com/reports/1656627",
"https://github.com/advisories/GHSA-9h9g-93gc-623h"
],
"uuid": "3579ccc6-601e-412d-9f40-02327e052d2d"
}
]
},
"nvd.nist.gov": {
"cve": {
"configurations": [
{
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"descriptions": [
{
"lang": "en",
"value": "rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4, a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer\u0027s allowed tags in either of the following ways: allow both \"math\" and \"style\" elements, or allow both \"svg\" and \"style\" elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include \"math\" or \"svg\" and \"style\" should either upgrade or use the following workaround immediately: Remove \"style\" from the overridden allowed tags, or remove \"math\" and \"svg\" from the overridden allowed tags.\n"
},
{
"lang": "es",
"value": "rails-html-sanitizer es responsable de sanitizar fragmentos HTML en aplicaciones Rails. Antes de la versi\u00f3n 1.4.4, una posible vulnerabilidad XSS con ciertas configuraciones de Rails::Html::Sanitizer pod\u00eda permitir a un atacante inyectar contenido si el desarrollador de la aplicaci\u00f3n hab\u00eda anulado las etiquetas permitidas del sanitizador de cualquiera de las siguientes maneras: permitir ambas \"math \" y \"syle\", o permitir elementos \"svg\" y \"style\". El c\u00f3digo solo se ve afectado si se anulan las etiquetas permitidas. . Este problema se solucion\u00f3 en la versi\u00f3n 1.4.4. Todos los usuarios que anulen las etiquetas permitidas para incluir \"math\" o \"svg\" y \"style\" deben actualizar o utilizar el siguiente workaround inmediatamente: eliminar \"style\" de las etiquetas permitidas anuladas, o eliminar \"math\" y \"svg\" de la etiquetas permitidas anuladas."
}
],
"id": "CVE-2022-23519",
"lastModified": "2024-02-01T15:59:04.693",
"metrics": {
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{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
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"source": "nvd@nist.gov",
"type": "Primary"
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 2.7,
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
},
"published": "2022-12-14T17:15:11.067",
"references": [
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"source": "security-advisories@github.com",
"tags": [
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"Third Party Advisory"
],
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"url": "https://hackerone.com/reports/1656627"
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"tags": [
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"url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00012.html"
}
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"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-79"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
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{
"description": [
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"lang": "en",
"value": "CWE-79"
}
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"source": "security-advisories@github.com",
"type": "Secondary"
}
]
}
}
}
}
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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.
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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.
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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.
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