CVE-2013-7338: Apple Mac OS X

High severity, CVSS 7.1. EPSS: 5.1% chance of exploitation in the next 30 days.

Python before 3.3.4 RC1 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a file size value larger than the size of the zip file to the (1) ZipExtFile.read, (2) ZipExtFile.read(n), (3) ZipExtFile.readlines, (4) ZipFile.extract, or (5) ZipFile.extractall function.

Affected products

• Apple Mac OS X: up to and including 10.10.4
• Python Python: version 3.3.0 only; version 3.3.1 only; version 3.3.2 only; version 3.3.3 only

Published 2014-04-22. Last modified 2026-06-17.