CVE-2021-20270 (High) detected in Pygments-2.5.2-py2.py3-none-any.whl

[mend-bolt-for-github]

CVE-2021-20270 - High Severity Vulnerability

Vulnerable Library - Pygments-2.5.2-py2.py3-none-any.whl

Pygments is a syntax highlighting package written in Python.

Library home page: https://files.pythonhosted.org/packages/be/39/32da3184734730c0e4d3fa3b2b5872104668ad6dc1b5a73d8e477e5fe967/Pygments-2.5.2-py2.py3-none-any.whl

Path to dependency file: /backend/requirements.txt

Path to vulnerable library: /backend/requirements.txt,/requirements.txt

Dependency Hierarchy:

• streamlit-0.55.2-py2.py3-none-any.whl (Root Library)
  • pydeck-0.5.0-py2.py3-none-any.whl
    • ipywidgets-7.5.1-py2.py3-none-any.whl
      • ipykernel-4.10.1-py2-none-any.whl
        • ipython-5.10.0-py2-none-any.whl
          • ❌ Pygments-2.5.2-py2.py3-none-any.whl (Vulnerable Library)

Found in base branch: main

Vulnerability Details

An infinite loop in SMLLexer in Pygments versions 1.5 to 2.7.3 may lead to denial of service when performing syntax highlighting of a Standard ML (SML) source file, as demonstrated by input that only contains the "exception" keyword.

Publish Date: 2021-03-23

URL: CVE-2021-20270

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: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-9w8r-397f-prfh

Release Date: 2021-03-23

Fix Resolution: Pygments - 20.12.3

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