Improper Validation of Array Index Affecting github.com/greenpau/caddy-security package, versions *
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Test your applications- Snyk ID SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-5961078
- published 16 Feb 2024
- disclosed 18 Sep 2023
- credit Maciej Domanski, Travis Peters, David Pokora
Introduced: 18 Sep 2023
CVE-2024-21493 Open this link in a new tabHow 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 Improper Validation of Array Index when parsing a Caddyfile. Multiple parsing functions in the affected library do not validate whether their input values are nil before attempting to access elements, which can lead to a panic (index out of range). Panics during the parsing of a configuration file may introduce ambiguity and vulnerabilities, hindering the correct interpretation and configuration of the web server.
PoC
func TestCrashCredentialsUsername(t *testing.T) {
file := caddyfile.NewTestDispenser(string("0 { credentials 0 { username"))
parseCaddyfile(file, nil)
}
func TestCrashCredentialsDomain(t *testing.T) {
file := caddyfile.NewTestDispenser(string("0 { credentials 0 { domain"))
parseCaddyfile(file, nil)
}
func TestCrashSSOProvider(t *testing.T) {
file := caddyfile.NewTestDispenser(string("00 { sso provider 0 { entity_id"))
parseCaddyfile(file, nil)
}
func TestCrashParseCaddyfileMessaging(t *testing.T) {
file := caddyfile.NewTestDispenser(string("0 { messaging email provider 0 { address"))
parseCaddyfile(file, nil)
}