Vulnerability · NVD

CVE-2013-7040

N/A Published on 2014-05-19

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.

EPSS 3.26% above median percentile 87.2%

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

Python 3.12 Windows winget:Python.Python.3.12

Affected — Fixed in — Latest tracked 3.12.10 undetermined

Vulnerable CPE configurations (41)

Vendor	Product	Platform	Versions	CPE 2.3 URI
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:2.7.1:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:2.7.1:rc1::::::
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:2.7.2:rc1::::::
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:2.7.3:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:2.7.4:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:2.7.5:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:2.7.6:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:2.7.7:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:2.7.1150:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:2.7.2150:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.0:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.0.1:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.1:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.1.1:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.1.2:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.1.3:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.1.4:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.1.5:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.2:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.2:alpha::::::
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.2.0:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.2.1:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.2.2:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.2.3:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.2.4:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.2.5:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.2.2150:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.3:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.3:beta2::::::
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.3.0:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.3.1:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.3.1:rc1::::::
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.3.2:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.3.3:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.3.3:rc1::::::
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.3.3:rc2::::::
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.3.4:::::::*
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.3.4:rc1::::::
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.3.5:-::::::
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.3.5:rc1::::::
python	python All platforms (wildcard)	All platforms (wildcard)	—	cpe:2.3:a:python:python:3.3.5:rc2::::::

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