UBUNTU-CVE-2018-20406

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    UBUNTU-CVE-2018-20406

    Published: 23 Dec 2018Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-20406

    Summary:

    Details: Modules/_pickle.c in Python before 3.7.1 has an integer overflow via a large LONG_BINPUT value that is mishandled during a "resize to twice the size" attempt. This issue might cause memory exhaustion, but is only relevant if the pickle format is used for serializing tens or hundreds of gigabytes of data. This issue is fixed in: v3.4.10, v3.4.10rc1; v3.5.10, v3.5.10rc1, v3.5.7, v3.5.7rc1, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.7, v3.6.7rc1, v3.6.7rc2, v3.6.8, v3.6.8rc1, v3.6.9, v3.6.9rc1; v3.7.1, v3.7.1rc1, v3.7.1rc2, v3.7.2, v3.7.2rc1, v3.7.3, v3.7.3rc1, v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9.

    References: https://ubuntu.com/security/CVE-2018-20406, https://python-security.readthedocs.io/vuln/pickle-load-dos.html, https://ubuntu.com/security/notices/USN-4127-1, https://ubuntu.com/security/notices/USN-4127-2, https://www.cve.org/CVERecord?id=CVE-2018-20406, https://ubuntu.com/security/notices/USN-6891-1

    Affected packages

    Package

    Name: python3.4

    Purl: pkg:deb/ubuntu/[email protected]~14.04.7+esm2?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.4.3-1ubuntu1~14.04.7+esm2

    Affected versions

    3.4~b1-0ubuntu3

    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