Improper Authorization Affecting dynamodb-encryption-sdk package, versions [,1.3.0)


Severity

Recommended
0.0
medium
0
10

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  • Snyk IDSNYK-PYTHON-DYNAMODBENCRYPTIONSDK-1070809
  • published9 Feb 2021
  • disclosed8 Feb 2021
  • creditUnknown

Introduced: 8 Feb 2021

CVE NOT AVAILABLE CWE-285  (opens in a new tab)

How to fix?

Upgrade dynamodb-encryption-sdk to version 1.3.0 or higher.

Overview

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.

Workarounds:

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.

References

CVSS Scores

version 3.1