UBUNTU-CVE-2021-46143

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    UBUNTU-CVE-2021-46143

    Published: 6 Jan 2022Last Modified: 29 May 2026
    Upstream:
    CVE-2021-46143
    Aliases:
    USN-5288-1
    USN-5455-1
    USN-7199-1

    Summary:

    Details: In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for m_groupSize.

    References: https://ubuntu.com/security/CVE-2021-46143, https://github.com/libexpat/libexpat/issues/532, https://github.com/libexpat/libexpat/pull/538, https://ubuntu.com/security/notices/USN-5288-1, https://ubuntu.com/security/notices/USN-5455-1, https://www.cve.org/CVERecord?id=CVE-2021-46143, https://ubuntu.com/security/notices/USN-7199-1, https://ubuntu.com/security/notices/USN-7913-1

    Affected packages

    Package

    Name: expat

    Purl: pkg:deb/ubuntu/expat?arch=source&distro=trusty%2Fesm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.1.0-4ubuntu1.4+esm4

    Affected versions

    2.1.0-4
    2.1.0-4ubuntu1
    2.1.0-4ubuntu1.1
    2.1.0-4ubuntu1.2
    2.1.0-4ubuntu1.3
    2.1.0-4ubuntu1.4
    2.1.0-4ubuntu1.4+esm1
    2.1.0-4ubuntu1.4+esm2

    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-2021-46143 | CVE-DB