CVE-2024-21636 – view_component

Package

Manager: gem
Name: view_component
Vulnerable Version: >=3.0.0 <3.9.0 || >=0 <2.83.0

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

EPSS: 0.00501 pctl0.64988

Details

view_component Cross-site Scripting vulnerability ### Impact _What kind of vulnerability is it? Who is impacted?_ This is an XSS vulnerability that has the potential to impact anyone rendering a component directly from a controller with the view_component gem. Note that only components that define a [`#call` method](https://viewcomponent.org/guide/templates.html#call) (i.e. instead of using a sidecar template) are affected. The return value of the `#call` method is not sanitized and can include user-defined content. In addition, the return value of the [`#output_postamble` method](https://viewcomponent.org/api.html#output_postamble--string) is not sanitized, which can also lead to XSS issues. ### Patches _Has the problem been patched? What versions should users upgrade to?_ Versions 3.9.0 has been released and fully mitigates both the `#call` and the `#output_postamble` vulnerabilities. ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ Sanitize the return value of `#call`, eg: ```ruby class MyComponent < ApplicationComponent def call html_escape("<div>#{user_input}</div>") end end ``` ### References _Are there any links users can visit to find out more?_ https://github.com/ViewComponent/view_component/pull/1950 ### For more information If you have any questions or comments about this advisory: Open an issue in the [github/view_component](https://github.com/github/view_component) project.

Metadata

Created: 2024-01-04T21:54:34Z
Modified: 2024-01-04T21:54:34Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/01/GHSA-wf2x-8w6j-qw37/GHSA-wf2x-8w6j-qw37.json
CWE IDs: ["CWE-79"]
Alternative ID: GHSA-wf2x-8w6j-qw37
Finding: F425
Auto approve: 1