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.
urllib3 before 1.25.9 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest(). NOTE: this is similar to CVE-2020-26116.
HTTP library with thread-safe connection pooling, file post, and more.
Library home page: https://files.pythonhosted.org/packages/e8/74/6e4f91745020f967d09332bb2b8b9b10090957334692eb88ea4afe91b77f/urllib3-1.25.8-py2.py3-none-any.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/requirements.txt
Found in HEAD commit: 6fb72d7c4467c773b7a73d9e00af3d08bf0cd3d3
Vulnerabilities
Details
CVE-2021-33503
### Vulnerable Library - urllib3-1.25.8-py2.py3-none-any.whlHTTP library with thread-safe connection pooling, file post, and more.
Library home page: https://files.pythonhosted.org/packages/e8/74/6e4f91745020f967d09332bb2b8b9b10090957334692eb88ea4afe91b77f/urllib3-1.25.8-py2.py3-none-any.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/requirements.txt
Dependency Hierarchy: - :x: **urllib3-1.25.8-py2.py3-none-any.whl** (Vulnerable Library)
Found in HEAD commit: 6fb72d7c4467c773b7a73d9e00af3d08bf0cd3d3
Found in base branch: main
### Vulnerability DetailsAn 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 FixType: Upgrade version
Origin: https://github.com/urllib3/urllib3/security/advisories/GHSA-q2q7-5pp4-w6pg
Release Date: 2021-06-29
Fix Resolution: 1.26.5
:rescue_worker_helmet: Automatic Remediation is available for this issue
CVE-2020-26137
### Vulnerable Library - urllib3-1.25.8-py2.py3-none-any.whlHTTP library with thread-safe connection pooling, file post, and more.
Library home page: https://files.pythonhosted.org/packages/e8/74/6e4f91745020f967d09332bb2b8b9b10090957334692eb88ea4afe91b77f/urllib3-1.25.8-py2.py3-none-any.whl
Path to dependency file: /requirements.txt
Path to vulnerable library: /requirements.txt,/requirements.txt
Dependency Hierarchy: - :x: **urllib3-1.25.8-py2.py3-none-any.whl** (Vulnerable Library)
Found in HEAD commit: 6fb72d7c4467c773b7a73d9e00af3d08bf0cd3d3
Found in base branch: main
### Vulnerability Detailsurllib3 before 1.25.9 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of putrequest(). NOTE: this is similar to CVE-2020-26116.
Publish Date: 2020-09-30
URL: CVE-2020-26137
### CVSS 3 Score Details (6.5)Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: Low - Integrity Impact: Low - Availability Impact: None
For more information on CVSS3 Scores, click here. ### Suggested FixType: Upgrade version
Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26137
Release Date: 2020-09-30
Fix Resolution: 1.25.9
:rescue_worker_helmet: Automatic Remediation is available for this issue:rescue_worker_helmet: Automatic Remediation is available for this issue.