CVE-2013-7040

python: hash secret can be recovered remotely

Published May 19, 2014 CVSS 2.0 · 4.3 Medium EPSS 3.1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2013-6840 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.
History
Type Values Removed Values Added
Metrics epss

{'score': 0.00419}

epss

{'score': 0.00789}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 6, 2024, 5:53 PM
Reserved
Dec 9, 2013, 12:00 AM
Status
Modified
Published
May 19, 2014, 2:55 PM
Modified
Jun 17, 2026, 12:01 AM
Severity
Moderate
Public date
Dec 9, 2013, 12:00 AM