NVD - CVE-2013-7040

CVE-2013-7040 Detail

Modified

This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.

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.

Source: MITRE
Description Last Modified: 05/19/2014

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6

Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://bugs.python.org/issue14621
http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
http://www.openwall.com/lists/oss-security/2013/12/09/13
http://www.openwall.com/lists/oss-security/2013/12/09/3
http://www.securityfocus.com/bid/64194
https://support.apple.com/kb/HT205031	Vendor Advisory

Technical Details

Vulnerability Type (View All)

Cryptographic Issues (CWE-310)

Vulnerable software and versions Switch to CPE 2.2

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

4 change records found - show changes

Modified Analysis - 3/30/2016 5:56:57 PM

Action

Type

Old Value

New Value

Changed

CPE Configuration

Record truncated, showing 500 of 2352 characters. View Entire Change Record

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:pyth

Record truncated, showing 500 of 2449 characters. View Entire Change Record

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:*:*:*:

Changed

Reference Type

https://support.apple.com/kb/HT205031 No Types Assigned

https://support.apple.com/kb/HT205031 Advisory

Quick Info

CVE Dictionary Entry:
CVE-2013-7040
NVD Published Date:
05/19/2014
NVD Last Modified:
11/28/2016

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2013-7040 Detail

Description

Impact

References to Advisories, Solutions, and Tools

Technical Details

Vulnerable software and versions Switch to CPE 2.2

Change History

CVE Modified by MITRE - 11/28/2016 2:10:02 PM

Modified Analysis - 3/30/2016 5:56:57 PM

CVE Modified by Source - 8/17/2015 9:59:23 PM

Initial CVE Analysis - 5/20/2014 8:15:56 AM

Quick Info