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Missing Initialization of Resource Affecting python3-tools package, versions <0:3.7.1-9.amzn2.0.1

Severity

 Recommended
0.0
medium
0
10

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    0.63% (80th percentile)

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  • Snyk ID SNYK-AMZN2-PYTHON3TOOLS-1667543
  • published 27 Sep 2021
  • disclosed 25 Sep 2018
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Introduced: 25 Sep 2018

CVE-2018-14647 Open this link in a new tab
CWE-909 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 python3-tools to version 0:3.7.1-9.amzn2.0.1 or higher.
This issue was patched in ALAS2-2018-1132.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-tools package and not the python3-tools package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 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.

References

CVSS Scores

version 3.1
Expand this section

NVD

7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High