CVEvulnerability

CVE-2013-7040

4.3 MEDIUM Published 2014-05-19 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2014-05-19
Last modified
2026-06-17
Assigner
[email protected]
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:N/A:P
Weaknesses
CWE-310

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.

Affected configurations

• apple mac os x (<= 10.10.4) • python python 2.7.1 • python python 2.7.2 • python python 2.7.3 • python python 2.7.4 • python python 2.7.5 • python python 2.7.6 • python python 2.7.7 • python python 2.7.1150 • python python 2.7.2150 • python python 3.0 • python python 3.0.1 • python python 3.1 • python python 3.1.1 • python python 3.1.2 • python python 3.1.3 • python python 3.1.4 • python python 3.1.5 • python python 3.2 • python python 3.2.0 • python python 3.2.1 • python python 3.2.2 • python python 3.2.3 • python python 3.2.4 • python python 3.2.5 • python python 3.2.2150 • python python 3.3 • python python 3.3.0 • python python 3.3.1 • python python 3.3.2 • python python 3.3.3 • python python 3.3.4 • python python 3.3.5

Related

Weakness · not in database (1)

References