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fix(curl): compare complete top level domain against allowdUrlDomain #1641

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Merged
cgoetz-inovex merged 2 commits into from
Oct 5, 2026
Merged

fix(curl): compare complete top level domain against allowdUrlDomain #1641

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24fa143
fix(curl): compare complete top level domain against allowdUrlDomain
cgoetz-inovex Oct 2, 2026
26915d2
Merge branch 'main' into fix/STACKITCLI-457-domain-check
cgoetz-inovex Oct 5, 2026
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fix(curl): compare complete top level domain against allowdUrlDomain
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@cgoetz-inovex
cgoetz-inovex committed Oct 2, 2026
commit 24fa143f209b46c27566261c7a3cf5603cb2f9ce
9 changes: 9 additions & 0 deletions internal/cmd/curl/curl_test.go
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Expand Up @@ -139,6 +139,15 @@ func TestParseInput(t *testing.T) {
model.URL = "https://www.example.website.com/"
}),
},
{
description: "hostname suffix without domain boundary",
argValues: []string{
"https://suspiciousstackit.cloud/",
},
flagValues: fixtureFlagValues(),
allowedURLDomain: "stackit.cloud",
isValid: false,
},
{
description: "invalid method 1",
argValues: fixtureArgValues(),
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7 changes: 6 additions & 1 deletion internal/pkg/utils/utils.go
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Expand Up @@ -108,8 +108,13 @@ func ValidateURLDomain(value string) error {
}

allowedUrlDomain := viper.GetString(config.AllowedUrlDomainKey)
if allowedUrlDomain == "" {
return nil
}

if !strings.HasSuffix(urlHost, allowedUrlDomain) {
urlHost = strings.ToLower(urlHost)
allowedUrlDomain = strings.ToLower(allowedUrlDomain)
if urlHost != allowedUrlDomain && !strings.HasSuffix(urlHost, "."+allowedUrlDomain) {
return fmt.Errorf(`only urls belonging to domain %s are allowed`, allowedUrlDomain)
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}
return nil
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78 changes: 78 additions & 0 deletions internal/pkg/utils/utils_test.go
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Expand Up @@ -119,6 +119,60 @@ func TestValidateURLDomain(t *testing.T) {
input: "https://example.stackit.cloud",
isValid: true,
},
{
name: "apex domain",
allowedUrlDomain: "stackit.cloud",
input: "https://stackit.cloud/path",
isValid: true,
},
{
name: "multiple subdomains",
allowedUrlDomain: "stackit.cloud",
input: "https://dns.api.stackit.cloud/v1",
isValid: true,
},
{
name: "hostname suffix without label boundary",
allowedUrlDomain: "stackit.cloud",
input: "https://suspiciousstackit.cloud",
isValid: false,
},
{
name: "lookalike subdomain",
allowedUrlDomain: "stackit.cloud",
input: "https://api.suspiciousstackit.cloud",
isValid: false,
},
{
name: "domain followed by extra labels",
allowedUrlDomain: "stackit.cloud",
input: "https://api.stackit.cloud.evil.example",
isValid: false,
},
{
name: "port is not hostname",
allowedUrlDomain: "stackit.cloud",
input: "https://stackit.cloud:443/v1",
isValid: true,
},
{
name: "userinfo does not affect hostname",
allowedUrlDomain: "stackit.cloud",
input: "https://stackit.cloud@evil.example/path",
isValid: false,
},
{
name: "path does not affect hostname",
allowedUrlDomain: "stackit.cloud",
input: "https://evil.example/path/stackit.cloud",
isValid: false,
},
{
name: "hostname is case insensitive",
allowedUrlDomain: "stackit.cloud",
input: "https://API.STACKIT.CLOUD/path",
isValid: true,
},
{
name: "STACKIT URL invalid",
allowedUrlDomain: "example.com",
Expand All @@ -137,6 +191,12 @@ func TestValidateURLDomain(t *testing.T) {
input: "https://www.test.example.com/",
isValid: true,
},
{
name: "custom domain boundary rejected",
allowedUrlDomain: "example.com",
input: "https://badexample.com",
isValid: false,
},
{
name: "every URL valid",
allowedUrlDomain: "",
Expand All @@ -153,6 +213,24 @@ func TestValidateURLDomain(t *testing.T) {
input: "http://example.stackit.cloud",
isValid: false,
},
{
name: "invalid protocol with allowed domain",
allowedUrlDomain: "stackit.cloud",
input: "http://api.stackit.cloud",
isValid: false,
},
{
name: "missing host",
allowedUrlDomain: "stackit.cloud",
input: "https:///path",
isValid: false,
},
{
name: "malformed URL",
allowedUrlDomain: "stackit.cloud",
input: "https://%zz",
isValid: false,
},
{
name: "no protocol",
input: "example.stackit.cloud",
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