id: GO-2022-0391
modules:
    - module: github.com/aws/aws-sdk-go
      versions:
        - fixed: 1.34.0
      vulnerable_at: 1.30.0
      packages:
        - package: github.com/aws/aws-sdk-go/service/s3/s3crypto
          symbols:
            - encodeMeta
          derived_symbols:
            - DecryptionClient.GetObject
            - DecryptionClient.GetObjectWithContext
            - EncryptionClient.PutObject
            - EncryptionClient.PutObjectWithContext
            - S3LoadStrategy.Load
            - S3SaveStrategy.Save
            - defaultV2LoadStrategy.Load
            - kmsKeyHandler.DecryptKey
            - kmsKeyHandler.DecryptKeyWithContext
            - kmsKeyHandler.GenerateCipherData
            - kmsKeyHandler.GenerateCipherDataWithContext
summary: Exposure of unencrypted plaintext hash in github.com/aws/aws-sdk-go
description: |-
    The AWS S3 Crypto SDK sends an unencrypted hash of the plaintext alongside the
    ciphertext as a metadata field. This hash can be used to brute force the
    plaintext, if the hash is readable to the attacker.

    AWS now blocks this metadata field, but older SDK versions still send it.
published: 2022-07-01T20:10:56Z
ghsas:
    - GHSA-6jvc-q2x7-pchv
    - GHSA-76wf-9vgp-pj7w
references:
    - fix: https://github.com/aws/aws-sdk-go/commit/35fa6ddf45c061e0f08d3a3b5119f8f4da38f6d1
cve_metadata:
    id: CVE-2022-2582
    cwe: 'CWE 311: Missing Encryption of Sensitive Data'