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| purl | pkg:deb/debian/ruby-rails-html-sanitizer@1.4.4-1?distro=trixie |
| Vulnerability | Summary | Fixed by |
|---|---|---|
| This package is not known to be affected by vulnerabilities. | ||
| Vulnerability | Summary | Aliases |
|---|---|---|
| VCID-2ece-9xu2-z7ea | XSS vulnerability - white list bypass Carefully crafted strings can cause user input to bypass the sanitization in the white list sanitizer which can lead to an XSS attack. |
CVE-2015-7580
GHSA-ghqm-pgxj-37gq |
| VCID-63em-3vdj-j3cu | Inefficient Regular Expression Complexity in rails-html-sanitizer ## Summary Certain configurations of rails-html-sanitizer `< 1.4.4` use an inefficient regular expression that is susceptible to excessive backtracking when attempting to sanitize certain SVG attributes. This may lead to a denial of service through CPU resource consumption. ## Mitigation Upgrade to rails-html-sanitizer `>= 1.4.4`. ## Severity The maintainers have evaluated this as [High Severity 7.5 (CVSS3.1)](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). ## References - [CWE - CWE-1333: Inefficient Regular Expression Complexity (4.9)](https://cwe.mitre.org/data/definitions/1333.html) - https://hackerone.com/reports/1684163 ## Credit This vulnerability was responsibly reported by @ooooooo-q (https://github.com/ooooooo-q). |
CVE-2022-23517
GHSA-5x79-w82f-gw8w GMS-2022-8298 |
| VCID-782b-usu3-bbhd | Possible XSS vulnerability with certain configurations of rails-html-sanitizer ## 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. ## References - [CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)](https://cwe.mitre.org/data/definitions/79.html) - https://hackerone.com/reports/1656627 ## Credit This vulnerability was responsibly reported by Dominic Breuker. |
CVE-2022-23519
GHSA-9h9g-93gc-623h GMS-2022-8299 |
| VCID-apxn-up79-x3ge | rails-html-sanitizer has XSS vulnerability with certain configurations ## Summary There is a possible XSS vulnerability with certain configurations of Rails::HTML::Sanitizer 1.6.0 when used with Rails >= 7.1.0. * Versions affected: 1.6.0 * Not affected: < 1.6.0 * Fixed versions: 1.6.1 ## Impact A possible XSS vulnerability with certain configurations of Rails::HTML::Sanitizer may allow an attacker to inject content if HTML5 sanitization is enabled and the application developer has overridden the sanitizer's allowed tags in the following way: - the "noscript" element is explicitly allowed Code is only impacted if Rails is configured to use HTML5 sanitization, please see documentation for [`config.action_view.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-view-sanitizer-vendor) and [`config.action_text.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-text-sanitizer-vendor) for more information on these configuration options. The default configuration is to disallow all of these elements. Code is only impacted if allowed tags are being overridden. Applications may be doing this in a few different ways: 1. using application configuration to configure Action View sanitizers' allowed tags: ```ruby # In config/application.rb config.action_view.sanitized_allowed_tags = ["noscript"] ``` 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: ["noscript"] %> ``` see https://api.rubyonrails.org/classes/ActionView/Helpers/SanitizeHelper.html#method-i-sanitize 3. setting Rails::HTML5::SafeListSanitizer class attribute `allowed_tags`: ```ruby # class-level option Rails::HTML5::SafeListSanitizer.allowed_tags = ["noscript"] ``` (note that this class may also be referenced as `Rails::Html::SafeListSanitizer`) 4. using a `:tags` options to the Rails::HTML5::SafeListSanitizer instance method `sanitize`: ```ruby # instance-level option Rails::HTML5::SafeListSanitizer.new.sanitize(@article.body, tags: ["noscript"]) ``` (note that this class may also be referenced as `Rails::Html::SafeListSanitizer`) 5. setting ActionText::ContentHelper module attribute `allowed_tags`: ```ruby ActionText::ContentHelper.allowed_tags = ["noscript"] ``` All users overriding the allowed tags by any of the above mechanisms to include "noscript" should either upgrade or use one of the workarounds. ## Workarounds Any one of the following actions will work around this issue: - Remove "noscript" from the overridden allowed tags, - Or, downgrade sanitization to HTML4 (see documentation for [`config.action_view.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-view-sanitizer-vendor) and [`config.action_text.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-text-sanitizer-vendor) for more information). ## References - [CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)](https://cwe.mitre.org/data/definitions/79.html) - Original report: https://hackerone.com/reports/2509647 ## Credit This vulnerability was responsibly reported by So Sakaguchi ([mokusou](https://hackerone.com/mokusou)) and [taise](https://hackerone.com/taise). |
CVE-2024-53989
GHSA-rxv5-gxqc-xx8g |
| VCID-cphr-tdzs-x7ar | rails-html-sanitize has XSS vulnerability with certain configurations ## Summary There is a possible XSS vulnerability with certain configurations of Rails::HTML::Sanitizer 1.6.0 when used with Rails >= 7.1.0 and Nokogiri < 1.15.7, or 1.16.x < 1.16.8. * Versions affected: 1.6.0 * Not affected: < 1.6.0 * Fixed versions: 1.6.1 Please note that the fix in v1.6.1 is to update the dependency on Nokogiri to 1.15.7 or >= 1.16.8. ## Impact A possible XSS vulnerability with certain configurations of Rails::HTML::Sanitizer may allow an attacker to inject content if HTML5 sanitization is enabled and 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 Rails is configured to use HTML5 sanitization, please see documentation for [`config.action_view.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-view-sanitizer-vendor) and [`config.action_text.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-text-sanitizer-vendor) for more information on these configuration options. Code is only impacted if allowed tags are being overridden. Applications may be doing this in a few different ways: 1. using application configuration to configure Action View sanitizers' allowed tags: ```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. setting Rails::HTML5::SafeListSanitizer class attribute `allowed_tags`: ```ruby # class-level option Rails::HTML5::SafeListSanitizer.allowed_tags = ["math", "style"] # or Rails::HTML5::SafeListSanitizer.allowed_tags = ["svg", "style"] ``` (note that this class may also be referenced as `Rails::Html::SafeListSanitizer`) 4. using a `:tags` options to the Rails::HTML5::SafeListSanitizer instance method `sanitize`: ```ruby # instance-level option Rails::HTML5::SafeListSanitizer.new.sanitize(@article.body, tags: ["math", "style"]) # or Rails::HTML5::SafeListSanitizer.new.sanitize(@article.body, tags: ["svg", "style"]) ``` (note that this class may also be referenced as `Rails::Html::SafeListSanitizer`) 5. setting ActionText::ContentHelper module attribute `allowed_tags`: ```ruby ActionText::ContentHelper.allowed_tags = ["math", "style"] # or ActionText::ContentHelper.allowed_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. ## Workarounds Any one of the following actions will work around this issue: - Remove "style" from the overridden allowed tags, - Or, remove "math" and "svg" from the overridden allowed tags, - Or, downgrade sanitization to HTML4 (see documentation for [`config.action_view.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-view-sanitizer-vendor) and [`config.action_text.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-text-sanitizer-vendor) for more information) - Or, independently upgrade Nokogiri to v1.15.7 or >= 1.16.8. ## References - [CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)](https://cwe.mitre.org/data/definitions/79.html) - Original report: https://hackerone.com/reports/2503220 ## Credit This vulnerability was responsibly reported by So Sakaguchi ([mokusou](https://hackerone.com/mokusou)) and [taise](https://hackerone.com/taise). |
CVE-2024-53985
GHSA-w8gc-x259-rc7x |
| VCID-ete9-xwuw-puf8 | Rails::Html::Sanitizer vulnerable to Cross-site Scripting Versions of Rails::Html::Sanitizer prior to version 1.4.3 are vulnerable to XSS with certain configurations of Rails::Html::Sanitizer which allows an attacker to inject content when the application developer has overridden the sanitizer's allowed tags to allow both `select` and `style` elements. Code is only impacted if allowed tags are being overridden. This may be done via application configuration: ```ruby# In config/application.rbconfig.action_view.sanitized_allowed_tags = ["select", "style"]``` see https://guides.rubyonrails.org/configuring.html#configuring-action-view Or it may be done with a `:tags` option to the Action View helper `sanitize`: ```<%= sanitize @comment.body, tags: ["select", "style"] %>``` see https://api.rubyonrails.org/classes/ActionView/Helpers/SanitizeHelper.html#method-i-sanitize It may also be done with Rails::Html::SafeListSanitizer directly: ```ruby# class-level optionRails::Html::SafeListSanitizer.allowed_tags = ["select", "style"]``` or with ```ruby# instance-level optionRails::Html::SafeListSanitizer.new.sanitize(@article.body, tags: ["select", "style"])``` All users overriding the allowed tags by any of the above mechanisms to include both "select" and "style" are recommended to upgrade immediately. A workaround for this issue can be applied by removing either `select` or `style` from the overridden allowed tags. |
CVE-2022-32209
GHSA-pg8v-g4xq-hww9 |
| VCID-nc6s-6usd-gkeb | Possible XSS vulnerability Certain attributes are not removed from tags when they are sanitized, and these attributes can lead to an XSS attack on target applications. |
CVE-2015-7578
GHSA-59c7-4xj2-hgvw |
| VCID-rhb1-h2b8-jucb | rails-html-sanitizer has XSS vulnerability with certain configurations ## Summary There is a possible XSS vulnerability with certain configurations of Rails::HTML::Sanitizer 1.6.0 when used with Rails >= 7.1.0. * Versions affected: 1.6.0 * Not affected: < 1.6.0 * Fixed versions: 1.6.1 ## Impact A possible XSS vulnerability with certain configurations of Rails::HTML::Sanitizer may allow an attacker to inject content if HTML5 sanitization is enabled and the application developer has overridden the sanitizer's allowed tags in the following way: - the "style" element is explicitly allowed - the "svg" or "math" element is not allowed Code is only impacted if Rails is configured to use HTML5 sanitization, please see documentation for [`config.action_view.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-view-sanitizer-vendor) and [`config.action_text.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-text-sanitizer-vendor) for more information on these configuration options. The default configuration is to disallow all of these elements. Code is only impacted if allowed tags are being overridden. Applications may be doing this in a few different ways: 1. using application configuration to configure Action View sanitizers' allowed tags: ```ruby # In config/application.rb config.action_view.sanitized_allowed_tags = ["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: ["style"] %> ``` see https://api.rubyonrails.org/classes/ActionView/Helpers/SanitizeHelper.html#method-i-sanitize 3. setting Rails::HTML5::SafeListSanitizer class attribute `allowed_tags`: ```ruby # class-level option Rails::HTML5::SafeListSanitizer.allowed_tags = ["style"] ``` (note that this class may also be referenced as `Rails::Html::SafeListSanitizer`) 4. using a `:tags` options to the Rails::HTML5::SafeListSanitizer instance method `sanitize`: ```ruby # instance-level option Rails::HTML5::SafeListSanitizer.new.sanitize(@article.body, tags: ["style"]) ``` (note that this class may also be referenced as `Rails::Html::SafeListSanitizer`) 5. setting ActionText::ContentHelper module attribute `allowed_tags`: ```ruby ActionText::ContentHelper.allowed_tags = ["style"] ``` All users overriding the allowed tags by any of the above mechanisms to include "style" and omit "svg" or "math" should either upgrade or use one of the workarounds. ## Workarounds Any one of the following actions will work around this issue: - Remove "style" from the overridden allowed tags, - Or, downgrade sanitization to HTML4 (see documentation for [`config.action_view.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-view-sanitizer-vendor) and [`config.action_text.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-text-sanitizer-vendor) for more information). ## References - [CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)](https://cwe.mitre.org/data/definitions/79.html) - Original report: https://hackerone.com/reports/2519936 ## Credit This vulnerability was responsibly reported by So Sakaguchi ([mokusou](https://hackerone.com/mokusou)) and [taise](https://hackerone.com/taise). |
CVE-2024-53987
GHSA-2x5m-9ch4-qgrr |
| VCID-rz3c-6h7r-6bam | rails-html-sanitizer has XSS vulnerability with certain configurations ## Summary There is a possible XSS vulnerability with certain configurations of Rails::HTML::Sanitizer 1.6.0 when used with Rails >= 7.1.0. * Versions affected: 1.6.0 * Not affected: < 1.6.0 * Fixed versions: 1.6.1 ## Impact A possible XSS vulnerability with certain configurations of Rails::HTML::Sanitizer may allow an attacker to inject content if HTML5 sanitization is enabled and the application developer has overridden the sanitizer's allowed tags in the following way: - the "math", "mtext", "table", and "style" elements are allowed - and either "mglyph" or "malignmark" are allowed Code is only impacted if Rails is configured to use HTML5 sanitization, please see documentation for [`config.action_view.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-view-sanitizer-vendor) and [`config.action_text.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-text-sanitizer-vendor) for more information on these configuration options. The default configuration is to disallow all of these elements except for "table". Code is only impacted if allowed tags are being overridden. Applications may be doing this in a few different ways: 1. using application configuration to configure Action View sanitizers' allowed tags: ```ruby # In config/application.rb config.action_view.sanitized_allowed_tags = ["math", "mtext", "table", "style", "mglyph"] # or config.action_view.sanitized_allowed_tags = ["math", "mtext", "table", "style", "malignmark"] ``` 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", "mtext", "table", "style", "mglyph"] %> <%# or %> <%= sanitize @comment.body, tags: ["math", "mtext", "table", "style", "malignmark"] %> ``` see https://api.rubyonrails.org/classes/ActionView/Helpers/SanitizeHelper.html#method-i-sanitize 3. setting Rails::HTML5::SafeListSanitizer class attribute `allowed_tags`: ```ruby # class-level option Rails::HTML5::SafeListSanitizer.allowed_tags = ["math", "mtext", "table", "style", "mglyph"] # or Rails::HTML5::SafeListSanitizer.allowed_tags = ["math", "mtext", "table", "style", "malignmark"] ``` (note that this class may also be referenced as `Rails::Html::SafeListSanitizer`) 4. using a `:tags` options to the Rails::HTML5::SafeListSanitizer instance method `sanitize`: ```ruby # instance-level option Rails::HTML5::SafeListSanitizer.new.sanitize(@article.body, tags: ["math", "mtext", "table", "style", "mglyph"]) # or Rails::HTML5::SafeListSanitizer.new.sanitize(@article.body, tags: ["math", "mtext", "table", "style", "malignmark"]) ``` (note that this class may also be referenced as `Rails::Html::SafeListSanitizer`) 5. setting ActionText::ContentHelper module attribute `allowed_tags`: ```ruby ActionText::ContentHelper.allowed_tags = ["math", "mtext", "table", "style", "mglyph"] # or ActionText::ContentHelper.allowed_tags = ["math", "mtext", "table", "style", "malignmark"] ``` All users overriding the allowed tags by any of the above mechanisms to include ("math" and "mtext" and "table" and "style" and ("mglyph" or "malignmark")) should either upgrade or use one of the workarounds. ## Workarounds Any one of the following actions will work around this issue: - Remove "mglyph" and "malignmark" from the overridden allowed tags, - Or, downgrade sanitization to HTML4 (see documentation for [`config.action_view.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-view-sanitizer-vendor) and [`config.action_text.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-text-sanitizer-vendor) for more information). ## References - [CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)](https://cwe.mitre.org/data/definitions/79.html) - Original report: https://hackerone.com/reports/2519936 ## Credit This vulnerability was responsibly reported by So Sakaguchi ([mokusou](https://hackerone.com/mokusou)) and [taise](https://hackerone.com/taise). |
CVE-2024-53988
GHSA-cfjx-w229-hgx5 |
| VCID-ueen-aybd-tqh2 | rails-html-sanitizer has XSS vulnerability with certain configurations ## Summary There is a possible XSS vulnerability with certain configurations of Rails::HTML::Sanitizer 1.6.0 when used with Rails >= 7.1.0. * Versions affected: 1.6.0 * Not affected: < 1.6.0 * Fixed versions: 1.6.1 ## Impact A possible XSS vulnerability with certain configurations of Rails::HTML::Sanitizer may allow an attacker to inject content if HTML5 sanitization is enabled and the application developer has overridden the sanitizer's allowed tags in the following way: - the "math" and "style" elements are both explicitly allowed Code is only impacted if Rails is configured to use HTML5 sanitization, please see documentation for [`config.action_view.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-view-sanitizer-vendor) and [`config.action_text.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-text-sanitizer-vendor) for more information on these configuration options. The default configuration is to disallow these elements. Code is only impacted if allowed tags are being overridden. Applications may be doing this in a few different ways: 1. using application configuration to configure Action View sanitizers' allowed tags: ```ruby # In config/application.rb config.action_view.sanitized_allowed_tags = ["math", "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"] %> ``` see https://api.rubyonrails.org/classes/ActionView/Helpers/SanitizeHelper.html#method-i-sanitize 3. setting Rails::HTML5::SafeListSanitizer class attribute `allowed_tags`: ```ruby # class-level option Rails::HTML5::SafeListSanitizer.allowed_tags = ["math", "style"] ``` (note that this class may also be referenced as `Rails::Html::SafeListSanitizer`) 4. using a `:tags` options to the Rails::HTML5::SafeListSanitizer instance method `sanitize`: ```ruby # instance-level option Rails::HTML5::SafeListSanitizer.new.sanitize(@article.body, tags: ["math", "style"]) ``` (note that this class may also be referenced as `Rails::Html::SafeListSanitizer`) 5. setting ActionText::ContentHelper module attribute `allowed_tags`: ```ruby ActionText::ContentHelper.allowed_tags = ["math", "style"] ``` All users overriding the allowed tags by any of the above mechanisms to include both "math" and "style" should either upgrade or use one of the workarounds. ## Workarounds Any one of the following actions will work around this issue: - Remove "math" or "style" from the overridden allowed tags, - Or, downgrade sanitization to HTML4 (see documentation for [`config.action_view.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-view-sanitizer-vendor) and [`config.action_text.sanitizer_vendor`](https://guides.rubyonrails.org/configuring.html#config-action-text-sanitizer-vendor) for more information). ## References - [CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)](https://cwe.mitre.org/data/definitions/79.html) - Original report: https://hackerone.com/reports/2519941 ## Credit This vulnerability was responsibly reported by So Sakaguchi ([mokusou](https://hackerone.com/mokusou)) and [taise](https://hackerone.com/taise). |
CVE-2024-53986
GHSA-638j-pmjw-jq48 |
| VCID-ujza-s7ug-9fcp | XSS vulnerability in strip_tags 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`. |
CVE-2015-7579
GHSA-r9c2-cr39-c8g6 |
| VCID-wxfr-bs81-augc | Improper neutralization of data URIs may allow XSS in rails-html-sanitizer ## Summary rails-html-sanitizer `>= 1.0.3, < 1.4.4` is vulnerable to cross-site scripting via data URIs when used in combination with Loofah `>= 2.1.0`. ## Mitigation Upgrade to rails-html-sanitizer `>= 1.4.4`. ## Severity The maintainers have evaluated this as [Medium Severity 6.1](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N). ## References - [CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)](https://cwe.mitre.org/data/definitions/79.html) - [SVG MIME Type (image/svg+xml) is misleading to developers · Issue #266 · w3c/svgwg](https://github.com/w3c/svgwg/issues/266) - https://github.com/rails/rails-html-sanitizer/issues/135 - https://hackerone.com/reports/1694173 ## Credit This vulnerability was independently reported by Maciej Piechota (@haqpl) and Mrinmoy Das (@goromlagche). |
CVE-2022-23518
GHSA-mcvf-2q2m-x72m GMS-2022-8300 |
| VCID-xby9-avva-a3e5 | XSS vulnerability The gem allows attributes that are not specified in the allowlist to be present in sanitized output when input with specially-crafted HTML fragments, and these attributes can lead to an XSS attack on target applications. This issue is similar to CVE-2018-8048 in Loofah. |
CVE-2018-3741
GHSA-px3r-jm9g-c8w8 |
| VCID-zcs7-hzze-u3a5 | Possible XSS vulnerability with certain configurations of rails-html-sanitizer ## Summary There is a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer. This is due to an incomplete fix of CVE-2022-32209. - 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 to allow both "select" and "style" elements. Code is only impacted if allowed tags are being overridden using either of the following two mechanisms: 1. Using the Rails configuration `config.action_view.sanitized_allow_tags=`: ```ruby # In config/application.rb config.action_view.sanitized_allowed_tags = ["select", "style"] ``` (see https://guides.rubyonrails.org/configuring.html#configuring-action-view) 2. Using the class method `Rails::Html::SafeListSanitizer.allowed_tags=`: ```ruby # class-level option Rails::Html::SafeListSanitizer.allowed_tags = ["select", "style"] ``` All users overriding the allowed tags by either of the above mechanisms to include both "select" and "style" should either upgrade or use one of the workarounds immediately. NOTE: Code is _not_ impacted if allowed tags are overridden using either of the following mechanisms: - the `:tags` option to the Action View helper method `sanitize`. - the `:tags` option to the instance method `SafeListSanitizer#sanitize`. ## Workarounds Remove either "select" or "style" from the overridden allowed tags. ## References - [CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)](https://cwe.mitre.org/data/definitions/79.html) - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32209 - https://hackerone.com/reports/1654310 ## Credit This vulnerability was responsibly reported by Dominic Breuker. |
CVE-2022-23520
GHSA-rrfc-7g8p-99q8 GMS-2022-8301 |