Aws sam cognito api gateway - access token forbidden but works if it's from postman - amazon-web-services

Question

I have a CognitoUserPool and a lambda function that requires an authenticated user.
When making a request with the token acquired from postman that opens the aws UI login, it works, but when using the token from a curl login it doesn't got 403 forbidden, any idea of what I'm missing?
My template.yaml
AWSTemplateFormatVersion: '2010-09-09'
Parameters:
Env:
Type: String
Default: dev
AllowedValues:
- dev
- test
- prod
Description: >-
sam-app
Transform:
- AWS::Serverless-2016-10-31
Globals:
Function:
Timeout: 100
Runtime: nodejs16.x
MemorySize: 128
Resources:
CognitoUserPool:
Type: AWS::Cognito::UserPool
Properties:
UserPoolName: !Sub ${Env}-Cognito-User-Pool
Policies:
PasswordPolicy:
MinimumLength: 8
UsernameAttributes:
- email
AutoVerifiedAttributes:
- email
Schema:
- AttributeDataType: String
Name: email
Required: false
CognitoUserPoolClient:
Type: AWS::Cognito::UserPoolClient
Properties:
UserPoolId: !Ref CognitoUserPool
ClientName: !Sub ${Env}-CognitoUserPoolClient
GenerateSecret: false
CallbackURLs:
- http://localhost:3000
LogoutURLs:
- http://localhost:3000
AllowedOAuthFlowsUserPoolClient: true
ExplicitAuthFlows:
- ALLOW_ADMIN_USER_PASSWORD_AUTH
- ALLOW_USER_PASSWORD_AUTH
- ALLOW_CUSTOM_AUTH
- ALLOW_USER_SRP_AUTH
- ALLOW_REFRESH_TOKEN_AUTH
- ALLOW_USER_PASSWORD_AUTH
AllowedOAuthFlows:
- code
- implicit
SupportedIdentityProviders:
- COGNITO
AllowedOAuthScopes:
- openid
- email
- profile
CognitoDomainName:
Type: AWS::Cognito::UserPoolDomain
Properties:
Domain: !Sub ${Env}-domain-test
UserPoolId: !Ref CognitoUserPool
HttpApi:
Type: AWS::Serverless::HttpApi
DependsOn: CognitoUserPoolClient
Properties:
StageName: !Ref Env
Auth:
Authorizers:
CustomCognitoAuthorizer:
UserPoolArn: !GetAtt CognitoUserPool.Arn
AuthorizationScopes:
- email
IdentitySource: "$request.header.Authorization"
JwtConfiguration:
issuer: !Sub https://cognito-idp.${AWS::Region}.amazonaws.com/${CognitoUserPool}
audience:
- !Ref CognitoUserPoolClient
CorsConfiguration:
AllowMethods:
- GET
AllowHeaders: '*'
AllowOrigins:
- '*'
getAllItemsFunction:
Type: AWS::Serverless::Function
Properties:
Handler: src/handlers/get-all-items.getAllItemsHandler
Events:
DosGet:
Type: HttpApi
Properties:
Auth:
Authorizer: CustomCognitoAuthorizer
Path: /
ApiId: !Ref HttpApi
Method: GET
The curl that I use to login, got it from this post AWS - Cognito Authentication - Curl Call - Generate Token Without CLI - No Client Secret
Method: POST
Endpoint: https://cognito-idp.{REGION}.amazonaws.com/
Content-Type: application/x-amz-json-1.1
X-Amz-Target: AWSCognitoIdentityProviderService.InitiateAuth
Body:
{
"AuthParameters" : {
"USERNAME" : "YOUR_USERNAME",
"PASSWORD" : "YOUR_PASSWORD"
},
"AuthFlow" : "USER_PASSWORD_AUTH", // Don't have to change this if you are using password auth
"ClientId" : "APP_CLIENT_ID"
}

Answer 1

After a bit of digging, I solved the issue, by analyzing the token that was generated from each method I saw a difference.
The token acquired from the aws UI.
{
"scope": "aws.cognito.signin.user.admin"
}
And the one from curl login
{
"scope": "openid profile email"
}
So the solution was to add aws.cognito.signin.user.admin as part of my UserPoolClient AllowedOAuthScopes
AllowedOAuthScopes:
- openid
- email
- profile
- aws.cognito.signin.user.admin
and on my HttpApi AuthorizationScopes
AllowedOAuthScopes:
- email
- aws.cognito.signin.user.admin