Vulnerability Description
All versions of the package github.com/greenpau/caddy-security are vulnerable to Cross-site Scripting (XSS) via the Referer header, due to improper input sanitization. Although the Referer header is sanitized by escaping some characters that can allow XSS (e.g., [&], [<], [>], ["], [']), it does not account for the attack based on the JavaScript URL scheme (e.g., javascript:alert(document.domain)// payload). Exploiting this vulnerability may not be trivial, but it could lead to the execution of malicious scripts in the context of the target user’s browser, compromising user sessions.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Authcrunch | Caddy-Security | - |
Related Weaknesses (CWE)
References
- https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddExploitThird Party Advisory
- https://github.com/greenpau/caddy-security/issues/267ExploitIssue Tracking
- https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6249860Third Party Advisory
- https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddExploitThird Party Advisory
- https://github.com/greenpau/caddy-security/issues/267ExploitIssue Tracking
- https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6249860Third Party Advisory
FAQ
What is CVE-2024-21496?
CVE-2024-21496 is a vulnerability with a CVSS score of 6.1 (MEDIUM). All versions of the package github.com/greenpau/caddy-security are vulnerable to Cross-site Scripting (XSS) via the Referer header, due to improper input sanitization. Although the Referer header is s...
How severe is CVE-2024-21496?
CVE-2024-21496 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-21496?
Check the references section above for vendor advisories and patch information. Affected products include: Authcrunch Caddy-Security.