CVE-2020-8911 (Medium) detected in github.com/aws/aws-sdk-go/service/s3/s3crypto-v1.13.30

[mend-bolt-for-github]

CVE-2020-8911 - Medium 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 padding oracle vulnerability exists in the AWS S3 Crypto SDK for GoLang versions prior to V2. The SDK allows users to encrypt files with AES-CBC without computing a Message Authentication Code (MAC), which then allows an attacker who has write access to the target's S3 bucket and can observe whether or not an endpoint with access to the key can decrypt a file, they can reconstruct the plaintext with (on average) 128*length (plaintext) queries to the endpoint, by exploiting CBC's ability to manipulate the bytes of the next block and PKCS5 padding errors. It is recommended to update your SDK to V2 or later, and re-encrypt your files.

Publish Date: 2020-08-11

URL: CVE-2020-8911

CVSS 3 Score Details (5.6)

Base Score Metrics:

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

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8911

Release Date: 2020-07-21

Fix Resolution: v1.34.1

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