CVE-2020-8912 (Low) detected in github.com/aws/aws-sdk-go/service/s3/s3crypto-v1.13.30

[mend-bolt-for-github]

CVE-2020-8912 - Low Severity Vulnerability

Vulnerable Library - github.com/aws/aws-sdk-go/service/s3/s3crypto-v1.13.30

AWS SDK for the Go programming language.

Dependency Hierarchy:

• github.com/dan-v/rattlesnakeos-stack/stack-v11.05 (Root Library)
  • github.com/aws/aws-sdk-go/service/iam-v1.13.30
    • github.com/aws/aws-sdk-go/aws/signer/v4-v1.13.30
      • github.com/aws/aws-sdk-go/private/protocol/rest-v1.13.30
        • github.com/aws/aws-sdk-go/aws/client-v1.13.30
          • github.com/aws/aws-sdk-go/aws/request-v1.13.30
            • github.com/aws/aws-sdk-go/aws/credentials-v1.13.30
              • github.com/aws/aws-sdk-go/internal/shareddefaults-v1.13.30
                • github.com/aws/aws-sdk-go/awstesting-v1.13.30
                  • github.com/aws/aws-sdk-go/awstesting/integration-v1.13.30
                  • github.com/aws/aws-sdk-go/aws/awsutil-v1.13.30
                  • github.com/aws/aws-sdk-go/aws-v1.13.30
                  • github.com/aws/aws-sdk-go/aws/credentials/endpointcreds-v1.13.30
                  • github.com/aws/aws-sdk-go/awstesting/unit-v1.13.30
                  • github.com/aws/aws-sdk-go/aws/session-v1.13.30
                  • github.com/aws/aws-sdk-go/aws/endpoints-v1.13.30
                  • github.com/aws/aws-sdk-go/service/s3-v1.13.30
                  • ❌ github.com/aws/aws-sdk-go/service/s3/s3crypto-v1.13.30 (Vulnerable Library)

Found in HEAD commit: 3f5851794e912a2ac2820fdd9fbae44af49cf66e

Found in base branch: master

Vulnerability Details

A vulnerability in the in-band key negotiation exists in the AWS S3 Crypto SDK for GoLang versions prior to V2. An attacker with write access to the targeted bucket can change the encryption algorithm of an object in the bucket, which can then allow them to change AES-GCM to AES-CTR. Using this in combination with a decryption oracle can reveal the authentication key used by AES-GCM as decrypting the GMAC tag leaves the authentication key recoverable as an algebraic equation. It is recommended to update your SDK to V2 or later, and re-encrypt your files.

Publish Date: 2020-08-11

URL: CVE-2020-8912

CVSS 3 Score Details (2.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Local
  • Attack Complexity: High
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: Low
  • Integrity Impact: None
  • Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-7f33-f4f5-xwgw

Release Date: 2020-08-17

Fix Resolution: v1.34.0

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