CVE-2021-33503 (High) detected in urllib3-1.23-py2.py3-none-any.whl

[staging-whitesource-for-github-com[bot]]

CVE-2021-33503 - High Severity Vulnerability

Vulnerable Library - urllib3-1.23-py2.py3-none-any.whl

HTTP library with thread-safe connection pooling, file post, and more.

Library home page: https://files.pythonhosted.org/packages/bd/c9/6fdd990019071a4a32a5e7cb78a1d92c53851ef4f56f62a3486e6a7d8ffb/urllib3-1.23-py2.py3-none-any.whl

Path to dependency file: /requirements.txt

Path to vulnerable library: /requirements.txt

Dependency Hierarchy: - requests-2.19.1-py2.py3-none-any.whl (Root Library) - :x: **urllib3-1.23-py2.py3-none-any.whl** (Vulnerable Library)

Found in HEAD commit: 4e4136bd71e71b84e2c09dff8eff467e59578a4f

Found in base branch: main

Vulnerability Details

An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.

Publish Date: 2021-06-29

URL: CVE-2021-33503

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/urllib3/urllib3/security/advisories/GHSA-q2q7-5pp4-w6pg

Release Date: 2021-06-29

Fix Resolution (urllib3): 1.26.5

Direct dependency fix Resolution (requests): 2.25.0

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:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.

[staging-whitesource-for-github-com[bot]]

:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.

[staging-whitesource-for-github-com[bot]]

:information_source: This issue was automatically re-opened by Mend because the vulnerable library in the specific branch(es) has been detected in the Mend inventory.