CVE-2024-28199: phlex XSS — Fix

Description

phlex is an open source framework for building object-oriented views in Ruby. There is a potential cross-site scripting (XSS) vulnerability that can be exploited via maliciously crafted user data. This was due to improper case-sensitivity in the code that was meant to prevent these attacks. If you render an `<a>` tag with an `href` attribute set to a user-provided link, that link could potentially execute JavaScript when clicked by another user. If you splat user-provided attributes when rendering any HTML tag, malicious event attributes could be included in the output, executing JavaScript when the events are triggered by another user. Patches are available on RubyGems for all 1.x minor versions. Users are advised to upgrade. Users unable to upgrade should consider configuring a content security policy that does not allow `unsafe-inline`.

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CVSS v3.1 Score

7.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
phlex	phlex	< 1.0.1
phlex	phlex	1.2.0 — 1.2.2
phlex	phlex	1.3.0 — 1.3.3
phlex	phlex	All
phlex	phlex	All
phlex	phlex	All
phlex	phlex	All

References

Advisories & Patches

https://github.com/phlex-ruby/phlex/commit/aa50c604cdee1d0ce7ef068a4c66cbd5d43f96a1 https://github.com/phlex-ruby/phlex/security/advisories/GHSA-242p-4v39-2v8g https://github.com/phlex-ruby/phlex/commit/aa50c604cdee1d0ce7ef068a4c66cbd5d43f96a1 https://github.com/phlex-ruby/phlex/security/advisories/GHSA-242p-4v39-2v8g

Other References

https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy#unsafe-inline https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy#unsafe-inline

Frequently Asked Questions

What is CVE-2024-28199? +

phlex is an open source framework for building object-oriented views in Ruby. There is a potential cross-site scripting (XSS) vulnerability that can be exploited via maliciously crafted user data. This was due to improper case-sensitivity in the code that was meant to prevent these attacks. If you render an `<a>` tag with an `href` attribute set to a user-provided link, that link could potentially execute JavaScript when clicked by another user. If you splat user-provided attributes when rendering any HTML tag, malicious event attributes could be included in the output, executing JavaScript when the events are triggered by another user. Patches are available on RubyGems for all 1.x minor versions. Users are advised to upgrade. Users unable to upgrade should consider configuring a content security policy that does not allow `unsafe-inline`. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2024-28199? +

CVE-2024-28199 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-28199? +

CVE-2024-28199 affects products from phlex, specifically: phlex. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-28199? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-28199