Resource exhaustion in Python - CVE-2019-9674

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU25630

Resource exhaustion in Python - CVE-2019-9674

Published: February 26, 2020


Vulnerability identifier: #VU25630
CSH Severity: Medium
CVSS v4: 8.2 [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]
CVE-ID: CVE-2019-9674
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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.


Affected software

Python
Ubuntu
Opensuse
python2.7-minimal (Ubuntu package)
python3.7 (Ubuntu package)
python3.6-minimal (Ubuntu package)
python3.6 (Ubuntu package)
python3.9-minimal (Ubuntu package)
python3.9 (Ubuntu package)
python3.8-minimal (Ubuntu package)
python3.7-minimal (Ubuntu package)
python3.8 (Ubuntu package)
python3.5 (Ubuntu package)
python3.5-minimal (Ubuntu package)
python2.7 (Ubuntu package)
python3.11-minimal (Ubuntu package)
python3.11 (Ubuntu package)
python3.4-minimal (Ubuntu package)
python3.4 (Ubuntu package)
python3.10 (Ubuntu package)
python3.10-minimal (Ubuntu package)
python3.12 (Ubuntu package)
python3.12-minimal (Ubuntu package)

How to mitigate CVE-2019-9674

Install updates from vendor's website.

Python - update to 3.7.3
python2.7-minimal (Ubuntu package) - addressed in versions Ubuntu Pro, 2.7.3-0ubuntu3.18, 2.7.6-8ubuntu0.6+esm6, 2.7.12-1ubuntu0~16.04.12, 2.7.17-1~18.04ubuntu1.11, 2.7.18-1~20.04.1
python3.7 (Ubuntu package) - addressed in versions Ubuntu Pro, 3.7.5-2~18.04.4
python3.6-minimal (Ubuntu package) - addressed in versions Ubuntu Pro, 3.6.9-1~18.04ubuntu1.12
python3.6 (Ubuntu package) - addressed in versions Ubuntu Pro, 3.6.9-1~18.04ubuntu1.12
python3.9-minimal (Ubuntu package) - update to Ubuntu Pro
python3.9 (Ubuntu package) - update to Ubuntu Pro
python3.8-minimal (Ubuntu package) - addressed in versions Ubuntu Pro, 3.8.0-3~18.04.1, 3.8.2-1ubuntu1.2, 3.8.10-0ubuntu1~20.04.10
python3.7-minimal (Ubuntu package) - addressed in versions Ubuntu Pro, 3.7.5-2~18.04.4
python3.8 (Ubuntu package) - addressed in versions Ubuntu Pro, 3.8.0-3~18.04.1, 3.8.2-1ubuntu1.2, 3.8.10-0ubuntu1~20.04.10
python3.5 (Ubuntu package) - addressed in versions Ubuntu Pro (Infra-only), 3.5.2-2ubuntu0~16.04.11
python3.5-minimal (Ubuntu package) - addressed in versions Ubuntu Pro, 3.5.2-2ubuntu0~16.04.11
python2.7 (Ubuntu package) - addressed in versions Ubuntu Pro (Infra-only), 2.7.3-0ubuntu3.18, 2.7.6-8ubuntu0.6+esm6, 2.7.12-1ubuntu0~16.04.12, 2.7.17-1~18.04ubuntu1.11, 2.7.18-1~20.04.1
python3.11-minimal (Ubuntu package) - addressed in versions Ubuntu Pro, 3.11.6-3ubuntu0.1
python3.11 (Ubuntu package) - addressed in versions Ubuntu Pro, 3.11.6-3ubuntu0.1
python3.4-minimal (Ubuntu package) - update to 3.4.3-1ubuntu1~14.04.7+esm7
python3.4 (Ubuntu package) - update to 3.4.3-1ubuntu1~14.04.7+esm7
python3.10 (Ubuntu package) - update to 3.10.12-1~22.04.4
python3.10-minimal (Ubuntu package) - update to 3.10.12-1~22.04.4
python3.12 (Ubuntu package) - update to 3.12.0-1ubuntu0.1
python3.12-minimal (Ubuntu package) - update to 3.12.0-1ubuntu0.1

External References

Related Security Bulletins