Input validation error in Python - CVE-2013-7338
Published: April 22, 2014 / Updated: August 10, 2020
Vulnerability identifier: #VU41776
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2013-7338
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Python.org
Affected software:
Python
Python
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
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.
How to mitigate CVE-2013-7338
Install update from vendor's website.
Sources
- http://bugs.python.org/issue20078
- http://hg.python.org/cpython/rev/79ea4ce431b1
- http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
- http://lists.opensuse.org/opensuse-updates/2014-05/msg00008.html
- http://seclists.org/oss-sec/2014/q1/592
- http://seclists.org/oss-sec/2014/q1/595
- http://www.securityfocus.com/bid/65179
- http://www.securitytracker.com/id/1029973
- https://docs.python.org/3.3/whatsnew/changelog.html
- https://security.gentoo.org/glsa/201503-10
- https://support.apple.com/kb/HT205031