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CVE-2020-25032

Good to know:

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Date: August 30, 2020

An issue was discovered in Flask-CORS (aka CORS Middleware for Flask) before 3.0.9. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format.

Language: Python

Severity Score

Related Resources (12)

http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00048.html
https://github.com/advisories/GHSA-xc3p-ff3m-f46v
https://github.com/corydolphin/flask-cors/commit/67c4b2cc98ae87cf1fa7df4f97fd81b40c79b895
https://github.com/pypa/advisory-database/tree/main/vulns/flask-cors/PYSEC-2020-43.yaml
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00032.html
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00028.html
https://www.debian.org/security/2020/dsa-4775
https://nvd.nist.gov/vuln/detail/CVE-2020-25032
https://github.com/corydolphin/flask-cors/releases/tag/3.0.9
https://github.com/corydolphin/flask-cors
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00039.html
https://www.mend.io/vulnerability-database/CVE-2020-25032

Severity Score

Weakness Type (CWE)

Path Traversal

CWE-22

Insecure Default Initialization of Resource

CWE-1188

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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