Path traversal in Flask-CORS - CVE-2020-25032
Published: April 18, 2023
Vulnerability identifier: #VU75215
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-25032
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.
Affected software
Flask-CORS
Ubuntu
IBM Cloud Pak for Data System
python3-flask-cors (Ubuntu package)
QRadar Assistant
Ubuntu
IBM Cloud Pak for Data System
python3-flask-cors (Ubuntu package)
QRadar Assistant
How to mitigate CVE-2020-25032
Install update from vendor's website.
Flask-CORS - update to 3.0.9
IBM Cloud Pak for Data System - update to 2.0.2.1.IF1
python3-flask-cors (Ubuntu package) - update to 3.0.8-2ubuntu0.1
QRadar Assistant - update to 3.7.0
IBM Cloud Pak for Data System - update to 2.0.2.1.IF1
python3-flask-cors (Ubuntu package) - update to 3.0.8-2ubuntu0.1
QRadar Assistant - update to 3.7.0
External References
- https://github.com/corydolphin/flask-cors/releases/tag/3.0.9
- 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://www.debian.org/security/2020/dsa-4775