CVE-2020-25032
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.
02 / AFFECTED SOFTWARE
Affected packages
38 explicit affected versions
42 explicit affected versions
40 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
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.
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.
05 / REFERENCES
Further evidence
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00028.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00032.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00039.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00048.html
- https://github.com/corydolphin/flask-cors/releases/tag/3.0.9
- https://www.debian.org/security/2020/dsa-4775
- https://github.com/advisories/GHSA-xc3p-ff3m-f46v
- https://github.com/corydolphin/flask-cors
- https://github.com/corydolphin/flask-cors/commit/67c4b2cc98ae87cf1fa7df4f97fd81b40c79b895
- https://github.com/pypa/advisory-database/tree/main/vulns/flask-cors/PYSEC-2020-43.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2020-25032