UBUNTU-CVE-2021-42374

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    UBUNTU-CVE-2021-42374

    Published: 15 Nov 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-42374
    Aliases:
    USN-5179-1

    Summary:

    Details: An out-of-bounds heap read in Busybox's unlzma applet leads to information leak and denial of service when crafted LZMA-compressed input is decompressed. This can be triggered by any applet/format that

    References: https://ubuntu.com/security/CVE-2021-42374, https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/, https://ubuntu.com/security/notices/USN-5179-1, https://www.cve.org/CVERecord?id=CVE-2021-42374

    Affected packages

    Package

    Name: busybox

    Purl: pkg:deb/ubuntu/busybox@1:1.27.2-2ubuntu3.4?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:1.27.2-2ubuntu3.4

    Affected versions

    1:1.22.0-19ubuntu2

    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-2021-42374 | CVE-DB