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CVE-2018-14647

CVE-2018-14647

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 5.3 · Medium · EPSS 10.9% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • python

    Versions
    • 3.8, 3.7, 3.6, 3.5, 3.4, 2.7: Affected

    No fix published

  • python2.7 Debian:11

    Affected ranges
    • ECOSYSTEM: < 2.7.15-5

    Update to 2.7.15-5

  • python2.7 Ubuntu:14.04:LTS

    Versions
    • 2.7.5-8ubuntu3
    • 2.7.5-8ubuntu4
    • 2.7.6-2
    • 2.7.6-2ubuntu1
    • 2.7.6-3
    • 2.7.6-3ubuntu1
    • 2.7.6-4
    • 2.7.6-4ubuntu1
    • 2.7.6-5
    • 2.7.6-7
    • 2.7.6-8
    • 2.7.6-8ubuntu0.2
    • 2.7.6-8ubuntu0.3
    • 2.7.6-8ubuntu0.4
    Affected ranges
    • ECOSYSTEM: < 2.7.6-8ubuntu0.5

    Update to 2.7.6-8ubuntu0.5

  • python3.4 Ubuntu:14.04:LTS

    Versions
    • 3.4~b1-0ubuntu3
    • 3.4~b1-4ubuntu4
    • 3.4~b1-4ubuntu6
    • 3.4~b1-5ubuntu2
    • 3.4~b2-1
    • 3.4~b3-1ubuntu1
    • 3.4~rc1-1build1
    • 3.4~rc2-1
    • 3.4~rc3-0ubuntu1
    • 3.4.0-1
    • 3.4.0-2ubuntu1
    • 3.4.0-2ubuntu1.1
    • 3.4.3-1ubuntu1~14.04.1
    • 3.4.3-1ubuntu1~14.04.3
    • 3.4.3-1ubuntu1~14.04.4
    • 3.4.3-1ubuntu1~14.04.5
    • 3.4.3-1ubuntu1~14.04.6
    Affected ranges
    • ECOSYSTEM: < 3.4.3-1ubuntu1~14.04.7

    Update to 3.4.3-1ubuntu1~14.04.7

  • python3.5 Ubuntu:Pro:14.04:LTS

    Versions
    • 3.5.2-2ubuntu0~16.04.4~14.04.1
    Affected ranges
    • ECOSYSTEM: < 3.5.2-2ubuntu0~16.04.4~14.04.1+esm1

    Update to 3.5.2-2ubuntu0~16.04.4~14.04.1+esm1

  • python2.7 Ubuntu:16.04:LTS

    Versions
    • 2.7.10-4ubuntu1
    • 2.7.10-4ubuntu2
    • 2.7.11-2
    • 2.7.11-3
    • 2.7.11-4
    • 2.7.11-6
    • 2.7.11-7
    • 2.7.11-7ubuntu1
    • 2.7.12-1~16.04
    • 2.7.12-1ubuntu0~16.04.1
    • 2.7.12-1ubuntu0~16.04.2
    • 2.7.12-1ubuntu0~16.04.3
    Affected ranges
    • ECOSYSTEM: < 2.7.12-1ubuntu0~16.04.4

    Update to 2.7.12-1ubuntu0~16.04.4

  • python3.5 Ubuntu:16.04:LTS

    Versions
    • 3.5.0-3
    • 3.5.0-3ubuntu1
    • 3.5.1~rc1-2ubuntu1
    • 3.5.1-1
    • 3.5.1-2
    • 3.5.1-3
    • 3.5.1-5
    • 3.5.1-6ubuntu1
    • 3.5.1-6ubuntu2
    • 3.5.1-9ubuntu1
    • 3.5.1-10
    • 3.5.2-2~16.01
    • 3.5.2-2~16.04
    • 3.5.2-2ubuntu0~16.04.1
    • 3.5.2-2ubuntu0~16.04.2
    • 3.5.2-2ubuntu0~16.04.3
    • 3.5.2-2ubuntu0~16.04.4
    Affected ranges
    • ECOSYSTEM: < 3.5.2-2ubuntu0~16.04.5

    Update to 3.5.2-2ubuntu0~16.04.5

  • python2.7 Ubuntu:18.04:LTS

    Versions
    • 2.7.14-2ubuntu2
    • 2.7.14-4
    • 2.7.14-6
    • 2.7.14-7
    • 2.7.14-8
    • 2.7.15~rc1-1
    Affected ranges
    • ECOSYSTEM: < 2.7.15~rc1-1ubuntu0.1

    Update to 2.7.15~rc1-1ubuntu0.1

  • python3.6 Ubuntu:18.04:LTS

    Versions
    • 3.6.3-1ubuntu1
    • 3.6.4~rc1-1
    • 3.6.4~rc1-2
    • 3.6.4-1
    • 3.6.4-2
    • 3.6.4-3build1
    • 3.6.4-4
    • 3.6.5~rc1-1
    • 3.6.5-3
    • 3.6.6-1~18.04
    Affected ranges
    • ECOSYSTEM: < 3.6.7-1~18.04

    Update to 3.6.7-1~18.04

  • python3.7 Ubuntu:18.04:LTS

    Versions
    • 3.7.0~a2-1
    • 3.7.0~a3-1
    • 3.7.0~a3-2
    • 3.7.0~a3-3
    • 3.7.0~a4-1
    • 3.7.0~b1-1
    • 3.7.0~b1-1build1
    • 3.7.0~b2-1
    • 3.7.0~b3-1
    • 3.7.0-1~18.04
    Affected ranges
    • ECOSYSTEM: < 3.7.1-1~18.04

    Update to 3.7.1-1~18.04

Original sources

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