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Require a space after the Basic authentication scheme #3138

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Require a space after the Basic authentication scheme #3138

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2 changes: 1 addition & 1 deletion middleware/basic_auth.go
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Original file line number Diff line number Diff line change
Expand Up @@ -121,7 +121,7 @@ func (config BasicAuthConfig) ToMiddleware() (echo.MiddlewareFunc, error) {
if i >= limit {
break
}
if len(auth) <= l+1 || !strings.EqualFold(auth[:l], basic) {
if len(auth) <= l+1 || auth[l] != ' ' || !strings.EqualFold(auth[:l], basic) {
continue
}
i++
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15 changes: 15 additions & 0 deletions middleware/basic_auth_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,21 @@ func TestBasicAuth(t *testing.T) {
basic + " " + base64.StdEncoding.EncodeToString([]byte("joe:secret")),
},
},
{
name: "nok, missing space after scheme",
givenConfig: defaultConfig,
whenAuth: []string{"BasicX" + base64.StdEncoding.EncodeToString([]byte("joe:secret"))},
expectHeader: basic + ` realm="Restricted"`,
expectErr: "Unauthorized",
},
{
name: "ok, unrelated scheme does not consume check limit",
givenConfig: defaultConfig,
whenAuth: []string{
"BasicX" + base64.StdEncoding.EncodeToString([]byte("joe:invalid_password")),
basic + " " + base64.StdEncoding.EncodeToString([]byte("joe:secret")),
},
},
{
name: "nok, multiple, valid out of limit",
givenConfig: BasicAuthConfig{Validator: validatorFunc, AllowedCheckLimit: 1},
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