CVE-2021-33503 (High) detected in urllib3-1.24.1-py2.py3-none-any.whl - autoclosed

[mend-bolt-for-github[bot]]

CVE-2021-33503 - High Severity Vulnerability

Vulnerable Library - urllib3-1.24.1-py2.py3-none-any.whl

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

Library home page: https://files.pythonhosted.org/packages/62/00/ee1d7de624db8ba7090d1226aebefab96a2c71cd5cfa7629d6ad3f61b79e/urllib3-1.24.1-py2.py3-none-any.whl

Path to dependency file: Python-100-Days/Day61-65/code/hello-tornado/requirements.txt

Path to vulnerable library: /Day61-65/code/hello-tornado/requirements.txt

Dependency Hierarchy: - :x: **urllib3-1.24.1-py2.py3-none-any.whl** (Vulnerable Library)

Found in HEAD commit: b77e181e329ca2515cf4a56a0da4646dc474e81d

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

---

Step up your Open Source Security Game with WhiteSource here

[mend-bolt-for-github[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.