CVE-2024-21494: Authentication Bypass by Spoofing

February 17, 2024 (updated February 20, 2024)

All versions of the package github.com/greenpau/caddy-security is vulnerable to Authentication Bypass by Spoofing via the X-Forwarded-For header due to improper input sanitization. An attacker can spoof an IP address used in the user identity module (/whoami API endpoint). This could lead to unauthorized access if the system trusts this spoofed IP address.

References

blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy
github.com/advisories/GHSA-vj36-3ccr-6563
github.com/greenpau/caddy-security/issues/266
nvd.nist.gov/vuln/detail/CVE-2024-21494
security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6249859

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