Verify that subscription request comes from known AWS account #7
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deep-c
reviewed
Mar 18, 2025
| """ | ||
| if hasattr(settings, 'AWS_ACCOUNT_ID'): | ||
| arn = payload['TopicArn'].split(':')[4] | ||
| print(arn) |
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nitpick: dont think this is necessary. Could use logger.debug otherwise
|
Thanks kwood, this is indeed useful. Ive just opened a PR to update the repo based on a fork. If you could make your changes based on that branch we can merge it in |
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Currently, this package validates that subscription requests are signed by AWS, but this allows any account on AWS to create a topic and start sending messages to an endpoint.
This is a potential security problem — if an attacker can discover the URL for an endpoint, they can create their own topics that write to them, and the subscription and subsequent messages will be accepted.
This PR creates a way to deny subscription requests that aren't coming from a known AWS account, configurable in the Django settings. It also introduces an easy way to customize this behavior, by overriding the
should_confirm_subscriptionmethod.If there's interest in merging this PR, I'd be happy to write some documentation for it.
Note that I had to remove the
nose-testsdependency — that library is no longer maintained, and./manage.py testworks out of the box now.