CVE-2024-21496
MEDIUM 5.3EPSS 0.6%
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.
- Affected
- github.com/greenpau/caddy-security
- CVSS v4.0 GitHub
- 5.3 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N - CVSS v3.1 SNYK
- 6.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - EPSS
- 0.58% chance of exploitation in the next 30 days, 46th percentile
- Published
- 2024-02-17
- Updated
- 2024-11-06
Proof-of-concept exploits (1)
Security advisories
- https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy
- https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6249860
- advisories/GHSA-ff72-ff42-c3gw
- greenpau/caddy-security/issues/267