#VU25630 Resource exhaustion in Python - CVE-2019-9674
Published: February 26, 2020
Vulnerability identifier: #VU25630
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-9674
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Python
Python
Software vendor:
Python.org
Python.org
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation in Lib/zipfile.py in Python when processing ZIP archives. A remote attacker can pass a specially crafted .zip archive to the application, trigger resource exhaustion and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.
External links
- https://bugs.python.org/issue36260
- https://bugs.python.org/issue36462
- https://github.com/python/cpython/blob/master/Lib/zipfile.py
- https://python-security.readthedocs.io/security.html#archives-and-zip-bomb
- https://security.netapp.com/advisory/ntap-20200221-0003/
- https://www.python.org/news/security/