CVE-2013-7040
Python Denial of Service Hash Collision Vulnerability
Description
Python 2.7 before 3.4 only uses the last eight bits of the prefix to randomize hash values, which causes it to compute hash values without restricting the ability to trigger hash collisions predictably and makes it easier for context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-1150.
INFO
Published Date :
May 19, 2014, 2:55 p.m.
Last Modified :
Oct. 25, 2019, 11:53 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.9
Exploitability Score :
8.6
Public PoC/Exploit Available at Github
CVE-2013-7040 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2013-7040.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Map Vulnerabilities into Different Layers of the Container Image
Python
Software build threat intelligence tool to compare software versions used in projects against CVE/CPE vulnerability data
Python Makefile Shell Ruby Roff
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2013-7040 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2013-7040 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CPE Deprecation Remap by [email protected]
Oct. 25, 2019
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:python:python:2.7:*:*:*:*:*:*:* OR *cpe:2.3:a:python:python:2.7.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 28, 2016
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/64194 [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 30, 2016
Action Type Old Value New Value Changed CPE Configuration Configuration 1 OR *cpe:2.3:a:python:python:3.3:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3:beta2:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.0:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.1:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.1:rc1:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.2:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.3:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.3:rc1:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.3:rc2:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.4:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.4:rc1:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.5:-:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.5:rc1:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.5:rc2:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2:alpha:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2.0:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2.1:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2.2:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2.2150:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2.3:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2.4:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2.5:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.1:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.1.1:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.1.2:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.1.3:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.1.4:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.1.5:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.0:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.0.1:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.1:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.1:rc1:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.1150:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.2:rc1:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.2150:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.3:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.4:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.5:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.6:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.7:*:*:*:*:*:*:* Configuration 1 OR *cpe:2.3:o:apple:mac_os_x:10.10.4:*:*:*:*:*:*:* (and previous) Configuration 2 OR *cpe:2.3:a:python:python:3.3:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3:beta2:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.0:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.1:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.1:rc1:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.2:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.3:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.3:rc1:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.3:rc2:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.4:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.4:rc1:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.5:-:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.5:rc1:*:*:*:*:*:* *cpe:2.3:a:python:python:3.3.5:rc2:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2:alpha:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2.0:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2.1:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2.2:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2.2150:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2.3:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2.4:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.2.5:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.1:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.1.1:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.1.2:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.1.3:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.1.4:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.1.5:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.0:*:*:*:*:*:*:* *cpe:2.3:a:python:python:3.0.1:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.1:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.1:rc1:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.1150:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.2:rc1:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.2150:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.3:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.4:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.5:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.6:*:*:*:*:*:*:* *cpe:2.3:a:python:python:2.7.7:*:*:*:*:*:*:* Changed Reference Type https://support.apple.com/kb/HT205031 No Types Assigned https://support.apple.com/kb/HT205031 Advisory -
CVE Modified by [email protected]
Aug. 18, 2015
Action Type Old Value New Value Added Reference http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html Added Reference https://support.apple.com/kb/HT205031 -
Initial Analysis by [email protected]
May. 20, 2014
Action Type Old Value New Value
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2013-7040 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2013-7040
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.27 }} -0.00%
score
0.64364
percentile