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Python static code analysis

Unique rules to find Bugs, Vulnerabilities, Security Hotspots, and Code Smells in your PYTHON code

Tags

Creating public APIs is security-sensitive
Security Hotspot
Allowing public network access to cloud resources is security-sensitive
Security Hotspot
Policies granting access to all resources of an account are security-sensitive
Security Hotspot
Policies granting all privileges are security-sensitive
Security Hotspot
Policies authorizing public access to resources are security-sensitive
Security Hotspot
Granting access to S3 buckets to all or authenticated users is security-sensitive
Security Hotspot
Hard-coded credentials are security-sensitive
Security Hotspot
Allowing public ACLs or policies on a S3 bucket is security-sensitive
Security Hotspot
Using slow regular expressions is security-sensitive
Security Hotspot
Using publicly writable directories is security-sensitive
Security Hotspot
Using clear-text protocols is security-sensitive
Security Hotspot
Expanding archive files without controlling resource consumption is security-sensitive
Security Hotspot
Signaling processes is security-sensitive
Security Hotspot
Configuring loggers is security-sensitive
Security Hotspot
Using weak hashing algorithms is security-sensitive
Security Hotspot
Disabling CSRF protections is security-sensitive
Security Hotspot
Using non-standard cryptographic algorithms is security-sensitive
Security Hotspot
Using pseudorandom number generators (PRNGs) is security-sensitive
Security Hotspot
Allowing unrestricted outbound communications is security-sensitive
Security Hotspot
Constructing arguments of system commands from user input is security-sensitive
Security Hotspot
Using unencrypted EFS file systems is security-sensitive
Security Hotspot
Using unencrypted SQS queues is security-sensitive
Security Hotspot
Using unencrypted SNS topics is security-sensitive
Security Hotspot
Using unencrypted SageMaker notebook instances is security-sensitive
Security Hotspot
Using unencrypted OpenSearch domains is security-sensitive
Security Hotspot
Using unencrypted RDS DB resources is security-sensitive
Security Hotspot
Using unencrypted EBS volumes is security-sensitive
Security Hotspot
Disabling auto-escaping in template engines is security-sensitive
Security Hotspot
Setting loose POSIX file permissions is security-sensitive
Security Hotspot
Formatting SQL queries is security-sensitive
Security Hotspot
Disabling versioning of S3 buckets is security-sensitive
Security Hotspot
Disabling server-side encryption of S3 buckets is security-sensitive
Security Hotspot
Having a permissive Cross-Origin Resource Sharing policy is security-sensitive
Security Hotspot
Delivering code in production with debug features activated is security-sensitive
Security Hotspot
Allowing both safe and unsafe HTTP methods is security-sensitive
Security Hotspot
Creating cookies without the "HttpOnly" flag is security-sensitive
Security Hotspot
Creating cookies without the "secure" flag is security-sensitive
Security Hotspot
Using hardcoded IP addresses is security-sensitive
Security Hotspot
Sending emails is security-sensitive
Security Hotspot
Reading the Standard Input is security-sensitive
Security Hotspot
Using command line arguments is security-sensitive
Security Hotspot
Encrypting data is security-sensitive
Security Hotspot
Using regular expressions is security-sensitive
Security Hotspot
Dynamically executing code is security-sensitive
Security Hotspot
Using shell interpreter when executing OS commands is security-sensitive
Security Hotspot

Creating public APIs is security-sensitive

Security Hotspot

BlockerSonarSource default severity
click to learn more

A public API, which can be requested by any authenticated or unauthenticated identities, can lead to unauthorized actions and information disclosures.

Ask Yourself Whether

The public API:

exposes sensitive data like personal information.
can be used to perform sensitive operations.

There is a risk if you answered yes to any of those questions.

Recommended Secure Coding Practices

It’s recommended to restrict API access to authorized entities, unless the API offers a non-sensitive service designed to be public.

Sensitive Code Example

For aws_cdk.aws_apigateway.Resource:

from aws_cdk import (
    aws_apigateway as apigateway
)

resource = api.root.add_resource("example")
resource.add_method(
    "GET",
    authorization_type=apigateway.AuthorizationType.NONE  # Sensitive
)

For aws_cdk.aws_apigatewayv2.CfnRoute:

from aws_cdk import (
    aws_apigatewayv2 as apigateway
)

apigateway.CfnRoute(
    self,
    "no-auth",
    api_id=api.ref,
    route_key="GET /test",
    authorization_type="NONE"  # Sensitive
)

Compliant Solution

For aws_cdk.aws_apigateway.Resource:

from aws_cdk import (
    aws_apigateway as apigateway
)

opts = apigateway.MethodOptions(
    authorization_type=apigateway.AuthorizationType.IAM
)
resource = api.root.add_resource(
    "example",
    default_method_options=opts
)
resource.add_method(
    "POST",
    authorization_type=apigateway.AuthorizationType.IAM
)
resource.add_method(  # authorization_type is inherited from the Resource's configured default_method_options
    "POST"
)

For aws_cdk.aws_apigatewayv2.CfnRoute:

from aws_cdk import (
    aws_apigatewayv2 as apigateway
)

apigateway.CfnRoute(
    self,
    "auth",
    api_id=api.ref,
    route_key="GET /test",
    authorization_type="AWS_IAM"
)

See

OWASP Top 10 2021 Category A1 - Broken Access Control
AWS Documentation - Controlling and managing access to a REST API in API Gateway
MITRE, CWE-284 - Improper Access Control
OWASP Top 10 2017 Category A5 - Broken Access Control

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