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add CVEs for loofah and rails-html-sanitizer (#531)
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‎gems/loofah/CVE-2022-23514.yml‎

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---
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gem: loofah
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cve: 2022-23514
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ghsa: 486f-hjj9-9vhh
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url: https://github.com/flavorjones/loofah/security/advisories/GHSA-486f-hjj9-9vhh
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title: "Inefficient Regular Expression Complexity in Loofah"
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date: 2022-12-13
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description: |
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## Summary
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Loofah `< 2.19.1` contains 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.
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## Mitigation
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Upgrade to Loofah `>= 2.19.1`.
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## Severity
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The Loofah 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).
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## References
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- [CWE - CWE-1333: Inefficient Regular Expression Complexity (4.9)](https://cwe.mitre.org/data/definitions/1333.html)
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- https://hackerone.com/reports/1684163
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## Credit
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This vulnerability was responsibly reported by @ooooooo-q (https://github.com/ooooooo-q).
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cvss_v3: 7.5
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patched_versions:
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- ">= 2.19.1"

‎gems/loofah/CVE-2022-23515.yml‎

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---
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gem: loofah
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cve: 2022-23515
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ghsa: 228g-948r-83gx
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url: https://github.com/flavorjones/loofah/security/advisories/GHSA-228g-948r-83gx
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title: "Improper neutralization of data URIs may allow XSS in Loofah"
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date: 2022-12-13
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description: |
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## Summary
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Loofah `>= 2.1.0, < 2.19.1` is vulnerable to cross-site scripting via the `image/svg+xml` media type in data URIs.
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## Mitigation
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Upgrade to Loofah `>= 2.19.1`.
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## Severity
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The Loofah 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).
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## References
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- [CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)](https://cwe.mitre.org/data/definitions/79.html)
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- [SVG MIME Type (image/svg+xml) is misleading to developers · Issue #266 · w3c/svgwg](https://github.com/w3c/svgwg/issues/266)
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- https://hackerone.com/reports/1694173
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- https://github.com/flavorjones/loofah/issues/101
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## Credit
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This vulnerability was responsibly reported by Maciej Piechota (@haqpl).
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cvss_v3: 6.1
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unaffected_versions:
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- "< 2.1.0"
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patched_versions:
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- ">= 2.19.1"

‎gems/loofah/CVE-2022-23516.yml‎

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---
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gem: loofah
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cve: 2022-23516
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ghsa: 3x8r-x6xp-q4vm
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url: https://github.com/flavorjones/loofah/security/advisories/GHSA-3x8r-x6xp-q4vm
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title: "Uncontrolled Recursion in Loofah"
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date: 2022-12-13
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description: |
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## Summary
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Loofah `>= 2.2.0, < 2.19.1` uses recursion for sanitizing `CDATA` sections, making it susceptible to stack exhaustion and raising a `SystemStackError` exception. This may lead to a denial of service through CPU resource consumption.
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## Mitigation
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Upgrade to Loofah `>= 2.19.1`.
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Users who are unable to upgrade may be able to mitigate this vulnerability by limiting the length of the strings that are sanitized.
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## Severity
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The Loofah 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).
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## References
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- [CWE - CWE-674: Uncontrolled Recursion (4.9)](https://cwe.mitre.org/data/definitions/674.html)
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cvss_v3: 7.5
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unaffected_versions:
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- "< 2.2.0"
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patched_versions:
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- ">= 2.19.1"

‎gems/rails-html-sanitizer/CVE-2022-23517.yml‎

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---
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gem: rails-html-sanitizer
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cve: 2022-23517
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ghsa: 5x79-w82f-gw8w
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url: https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-5x79-w82f-gw8w
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title: "Inefficient Regular Expression Complexity in rails-html-sanitizer"
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date: 2022-12-13
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description: |
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## Summary
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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.
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## Mitigation
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Upgrade to rails-html-sanitizer `>= 1.4.4`.
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## Severity
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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).
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## References
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- [CWE - CWE-1333: Inefficient Regular Expression Complexity (4.9)](https://cwe.mitre.org/data/definitions/1333.html)
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- https://hackerone.com/reports/1684163
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## Credit
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This vulnerability was responsibly reported by @ooooooo-q (https://github.com/ooooooo-q).
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cvss_v3: 7.5
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patched_versions:
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- ">= 1.4.4"

‎gems/rails-html-sanitizer/CVE-2022-23518.yml‎

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---
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gem: rails-html-sanitizer
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cve: 2022-23518
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ghsa: mcvf-2q2m-x72m
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url: https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-mcvf-2q2m-x72m
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title: "Improper neutralization of data URIs may allow XSS in rails-html-sanitizer"
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date: 2022-12-13
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description: |
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## Summary
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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`.
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## Mitigation
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Upgrade to rails-html-sanitizer `>= 1.4.4`.
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## Severity
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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).
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## References
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- [CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)](https://cwe.mitre.org/data/definitions/79.html)
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- [SVG MIME Type (image/svg+xml) is misleading to developers · Issue #266 · w3c/svgwg](https://github.com/w3c/svgwg/issues/266)
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- https://github.com/rails/rails-html-sanitizer/issues/135
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- https://hackerone.com/reports/1694173
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## Credit
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This vulnerability was independently reported by Maciej Piechota (@haqpl) and Mrinmoy Das (@goromlagche).
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cvss_v3: 6.1
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unaffected_versions:
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- "< 1.0.3"
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patched_versions:
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- ">= 1.4.4"

‎gems/rails-html-sanitizer/CVE-2022-23519.yml‎

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---
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gem: rails-html-sanitizer
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cve: 2022-23519
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ghsa: 9h9g-93gc-623h
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url: https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h
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title: "Possible XSS vulnerability with certain configurations of rails-html-sanitizer"
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date: 2022-12-13
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description: |
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## Summary
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There is a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer.
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- Versions affected: ALL
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- Not affected: NONE
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- Fixed versions: 1.4.4
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## Impact
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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:
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- allow both "math" and "style" elements,
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- or allow both "svg" and "style" elements
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Code is only impacted if allowed tags are being overridden. Applications may be doing this in four different ways:
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1. using application configuration:
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```ruby
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# In config/application.rb
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config.action_view.sanitized_allowed_tags = ["math", "style"]
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# or
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config.action_view.sanitized_allowed_tags = ["svg", "style"]
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```
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see https://guides.rubyonrails.org/configuring.html#configuring-action-view
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2. using a `:tags` option to the Action View helper `sanitize`:
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```
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<%= sanitize @comment.body, tags: ["math", "style"] %>
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<%# or %>
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<%= sanitize @comment.body, tags: ["svg", "style"] %>
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```
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see https://api.rubyonrails.org/classes/ActionView/Helpers/SanitizeHelper.html#method-i-sanitize
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3. using Rails::Html::SafeListSanitizer class method `allowed_tags=`:
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```ruby
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# class-level option
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Rails::Html::SafeListSanitizer.allowed_tags = ["math", "style"]
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# or
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Rails::Html::SafeListSanitizer.allowed_tags = ["svg", "style"]
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```
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4. using a `:tags` options to the Rails::Html::SafeListSanitizer instance method `sanitize`:
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```ruby
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# instance-level option
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Rails::Html::SafeListSanitizer.new.sanitize(@article.body, tags: ["math", "style"])
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# or
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Rails::Html::SafeListSanitizer.new.sanitize(@article.body, tags: ["svg", "style"])
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```
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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.
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## Workarounds
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Remove "style" from the overridden allowed tags, or remove "math" and "svg" from the overridden allowed tags.
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## References
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- [CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)](https://cwe.mitre.org/data/definitions/79.html)
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- https://hackerone.com/reports/1656627
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## Credit
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This vulnerability was responsibly reported by Dominic Breuker.
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patched_versions:
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- ">= 1.4.4"

‎gems/rails-html-sanitizer/CVE-2022-23520.yml‎

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---
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gem: rails-html-sanitizer
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cve: 2022-23520
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ghsa: rrfc-7g8p-99q8
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url: https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-rrfc-7g8p-99q8
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title: "Possible XSS vulnerability with certain configurations of rails-html-sanitizer"
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date: 2022-12-13
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description: |
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## Summary
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There is a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer. This is due to an incomplete fix of CVE-2022-32209.
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- Versions affected: ALL
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- Not affected: NONE
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- Fixed versions: 1.4.4
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## Impact
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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.
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Code is only impacted if allowed tags are being overridden using either of the following two mechanisms:
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1. Using the Rails configuration `config.action_view.sanitized_allow_tags=`:
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```ruby
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# In config/application.rb
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config.action_view.sanitized_allowed_tags = ["select", "style"]
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```
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(see https://guides.rubyonrails.org/configuring.html#configuring-action-view)
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2. Using the class method `Rails::Html::SafeListSanitizer.allowed_tags=`:
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```ruby
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# class-level option
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Rails::Html::SafeListSanitizer.allowed_tags = ["select", "style"]
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```
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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.
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NOTE: Code is _not_ impacted if allowed tags are overridden using either of the following mechanisms:
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- the `:tags` option to the Action View helper method `sanitize`.
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- the `:tags` option to the instance method `SafeListSanitizer#sanitize`.
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## Workarounds
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Remove either "select" or "style" from the overridden allowed tags.
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## References
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- [CWE - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (4.9)](https://cwe.mitre.org/data/definitions/79.html)
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- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-32209
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- https://hackerone.com/reports/1654310
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## Credit
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This vulnerability was responsibly reported by Dominic Breuker.
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patched_versions:
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- ">= 1.4.4"

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