UBUNTU-CVE-2021-45960

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    UBUNTU-CVE-2021-45960

    Published: 1 Jan 2022Last Modified: 28 May 2026
    Upstream:
    CVE-2021-45960
    Aliases:
    USN-5288-1

    Summary:

    Details: In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).

    References: https://ubuntu.com/security/CVE-2021-45960, https://github.com/libexpat/libexpat/pull/534/commits/0adcb34c49bee5b19bd29b16a578c510c23597ea, https://ubuntu.com/security/notices/USN-5288-1, https://www.cve.org/CVERecord?id=CVE-2021-45960

    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-2021-45960 | CVE-DB