Improper Initialization Affecting python-libs package, versions <0:2.7.5-86.el7


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.63% (80th percentile)

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  • Snyk IDSNYK-CENTOS7-PYTHONLIBS-2138840
  • published26 Jul 2021
  • disclosed22 Sept 2018

Introduced: 22 Sep 2018

CVE-2018-14647  (opens in a new tab)
CWE-665  (opens in a new tab)
CWE-335  (opens in a new tab)

How to fix?

Upgrade Centos:7 python-libs to version 0:2.7.5-86.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-libs package and not the python-libs package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

Python's elementtree C accelerator failed to initialise Expat's hash salt during initialization. This could make it easy to conduct denial of service attacks against Expat by constructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM. The vulnerability exists in Python versions 3.7.0, 3.6.0 through 3.6.6, 3.5.0 through 3.5.6, 3.4.0 through 3.4.9, 2.7.0 through 2.7.15.

CVSS Scores

version 3.1