CVE-2021-27291 (High) detected in Pygments-2.2.0-py2.py3-none-any.whl

[mend-bolt-for-github]

CVE-2021-27291 - High Severity Vulnerability

Vulnerable Library - Pygments-2.2.0-py2.py3-none-any.whl

Pygments is a syntax highlighting package written in Python.

Library home page: https://files.pythonhosted.org/packages/02/ee/b6e02dc6529e82b75bb06823ff7d005b141037cb1416b10c6f00fc419dca/Pygments-2.2.0-py2.py3-none-any.whl

Path to dependency file: envoy/docs/requirements.txt

Path to vulnerable library: envoy/docs/requirements.txt,envoy/docs/requirements.txt

Dependency Hierarchy:

• ❌ Pygments-2.2.0-py2.py3-none-any.whl (Vulnerable Library)

Found in HEAD commit: 320650059a0b0796f39380aaca16815f2f8a4625

Found in base branch: master

Vulnerability Details

In pygments 1.1+, fixed in 2.7.4, the lexers used to parse programming languages rely heavily on regular expressions. Some of the regular expressions have exponential or cubic worst-case complexity and are vulnerable to ReDoS. By crafting malicious input, an attacker can cause a denial of service.

Publish Date: 2021-03-17

URL: CVE-2021-27291

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: https://github.com/pygments/pygments/releases/tag/2.7.4

Release Date: 2021-03-17

Fix Resolution: Pygments - 2.7.4

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