UBUNTU-CVE-2018-14647

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    UBUNTU-CVE-2018-14647

    Published: 24 Sept 2018Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-14647

    Summary:

    Details: 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: https://ubuntu.com/security/CVE-2018-14647, https://ubuntu.com/security/notices/USN-3817-1, https://ubuntu.com/security/notices/USN-3817-2, https://www.cve.org/CVERecord?id=CVE-2018-14647, https://ubuntu.com/security/notices/USN-6891-1

    Affected packages

    Package

    Name: python2.7

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.7.6-8ubuntu0.5

    Affected 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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2018-14647 | CVE-DB