6.1 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
20.4%
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 (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 is not sanitized, which can also lead to XSS issues.
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.
Is there a way for users to fix or remediate the vulnerability without upgrading?
Sanitize the return value of #call
, eg:
class MyComponent < ApplicationComponent
def call
html_escape("<div>#{user_input}</div>")
end
end
Are there any links users can visit to find out more?
https://github.com/ViewComponent/view_component/pull/1950
If you have any questions or comments about this advisory:
Open an issue in the github/view_component project.
github.com/rubysec/ruby-advisory-db/blob/master/gems/view_component/CVE-2024-21636.yml
github.com/ViewComponent/view_component
github.com/ViewComponent/view_component/commit/0d26944a8d2730ea40e60eae23d70684483e5017
github.com/ViewComponent/view_component/commit/c43d8bafa7117cbce479669a423ab266de150697
github.com/ViewComponent/view_component/pull/1950
github.com/ViewComponent/view_component/pull/1962
github.com/ViewComponent/view_component/security/advisories/GHSA-wf2x-8w6j-qw37
nvd.nist.gov/vuln/detail/CVE-2024-21636
6.1 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
20.4%