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Test your applicationsUpgrade dynamodb-encryption-sdk
to version 1.3.0 or higher.
dynamodb-encryption-sdk is a DynamoDB Encryption Client for Python
Affected versions of this package are vulnerable to Improper Authorization. This concerns users of MostRecentProvider
in the DynamoDB Encryption Client with a key provider like AWS Key Management Service, that allows for permissions on keys to be modified.
When key usage permissions are changed at the key provider, time-based key reauthorization logic in MostRecentProvider
does not reauthorize the use of the key. This creates the potential for keys to be used in the DynamoDB Encryption Client after permissions to do so were revoked at the key provider.
Users who cannot upgrade to use the CachingMostRecentProvider
can call clear()
on the cache to manually flush all of its contents. Next use of the key will force a re-validation to occur with the key provider.