CVE-2020-13757 (High) detected in rsa-4.0-py2.py3-none-any.whl

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CVE-2020-13757 - High Severity Vulnerability

Vulnerable Library - rsa-4.0-py2.py3-none-any.whl

Pure-Python RSA implementation

Library home page: https://files.pythonhosted.org/packages/02/e5/38518af393f7c214357079ce67a317307936896e961e35450b70fad2a9cf/rsa-4.0-py2.py3-none-any.whl

Path to dependency file: clusterfuzz/src/platform_requirements.txt

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

Dependency Hierarchy:

• ❌ rsa-4.0-py2.py3-none-any.whl (Vulnerable Library)

Found in HEAD commit: aefe4b0859891117218fba5984e5c3e753ea9597

Vulnerability Details

Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).

Publish Date: 2020-06-01

URL: CVE-2020-13757

CVSS 3 Score Details (7.5)

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: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: sybrenstuvel/python-rsa@3283b12

Release Date: 2020-06-01

Fix Resolution: rsa - 4.1

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