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Missing Initialization of Resource Affecting python3.5 package, versions <3.5.2-2ubuntu0~16.04.4~14.04.1+esm1

Severity

 Recommended
medium

Based on Ubuntu security rating

    Threat Intelligence

    EPSS
    0.63% (80th percentile)

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  • Snyk ID SNYK-UBUNTU1404-PYTHON35-304692
  • published 25 Sep 2018
  • 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 Ubuntu:14.04 python3.5 to version 3.5.2-2ubuntu016.04.414.04.1+esm1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.5 package and not the python3.5 package as distributed by Ubuntu. See How to fix? for Ubuntu:14.04 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