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CVE-2013-7040

CVE information

Published

8 years ago

Last Modified

2 years ago

CVSSv2.0 Severity

Medium

Impact Analysis

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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..

CVSSv2.0 Score

Severity
Medium
Base Score
4.3/10
Exploit Score
8.6/10
Access Vector
Network
Access Complexity
Medium
Authentication Required
None
Impact Score
2.9/10
Confidentiality Impact
None
Availability Impact
Partial
Integrity Impact
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:2.7.6:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.3.5:-:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.1:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.3.3:rc2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.1.1:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.3.2:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.3.1:rc1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.0.1:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.2.2:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.3.3:rc1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.2.5:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:2.7.1:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.3:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.3.4:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.2.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.2.1:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.1.2:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:2.7.1:rc1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:2.7.1150:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:2.7.7:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.3.4:rc1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.2.2150:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:2.7.2:rc1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.3.1:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.3.5:rc2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.2.3:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.1.5:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:2.7.3:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:2.7.4:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.3.3:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.2:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.2:alpha:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:2.7.5:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.3:beta2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.3.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.1.3:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.1.4:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:2.7.2150:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.3.5:rc1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:python:python:3.2.4:*:*:*:*:*:*:*
  Yes
- -

References

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