CVE-2020-36242 (High) detected in cryptography-3.0-cp27-cp27mu-manylinux2010_x86_64.whl

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CVE-2020-36242 - High Severity Vulnerability

Vulnerable Library - cryptography-3.0-cp27-cp27mu-manylinux2010_x86_64.whl

cryptography is a package which provides cryptographic recipes and primitives to Python developers.

Library home page: https://files.pythonhosted.org/packages/b8/86/2692315807539c0f6452c58661d268c88d5fb79acf6c13279eb7b87ecd81/cryptography-3.0-cp27-cp27mu-manylinux2010_x86_64.whl

Path to dependency file: clusterfuzz/src/appengine/requirements.txt

Path to vulnerable library: clusterfuzz/src/appengine/requirements.txt,clusterfuzz/src/local/butler/scripts,clusterfuzz/src/appengine/handlers/cron/project,clusterfuzz/src/python/bot/tasks,clusterfuzz/src/platform_requirements.txt

Dependency Hierarchy:

• pyOpenSSL-19.1.0-py2.py3-none-any.whl (Root Library)
  • ❌ cryptography-3.0-cp27-cp27mu-manylinux2010_x86_64.whl (Vulnerable Library)

Vulnerability Details

In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the Fernet class.

Publish Date: 2021-02-07

URL: CVE-2020-36242

CVSS 3 Score Details (9.1)

Base Score Metrics:

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

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://github.com/pyca/cryptography/blob/master/CHANGELOG.rst

Release Date: 2021-02-07

Fix Resolution: cryptography - 3.3.2