Cross-site Scripting (XSS) Affecting github.com/greenpau/caddy-security package, versions *


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    Exploit Maturity
    Proof of concept
    EPSS
    0.05% (17th percentile)

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  • Snyk ID SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6249860
  • published 16 Feb 2024
  • disclosed 18 Sep 2023
  • credit Maciej Domanski, Travis Peters, David Pokora

How to fix?

There is no fixed version for github.com/greenpau/caddy-security.

Overview

github.com/greenpau/caddy-security is a Security App and Plugin for Caddy v2.

Affected versions of this package 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.

References

CVSS Scores

version 3.1
Expand this section

Snyk

Recommended
6.1 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Changed
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    None