UBUNTU-CVE-2021-4217

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    UBUNTU-CVE-2021-4217

    Published: 24 Aug 2022Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-4217

    Summary:

    Details: A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file, leading to a crash or code execution.

    References: https://ubuntu.com/security/CVE-2021-4217, https://ubuntu.com/security/notices/USN-5673-1, https://www.cve.org/CVERecord?id=CVE-2021-4217, https://ubuntu.com/security/notices/USN-7054-1

    Affected packages

    Package

    Name: unzip

    Purl: pkg:deb/ubuntu/[email protected]+esm1?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -6.0-9ubuntu1.6+esm1

    Affected versions

    6.0-9ubuntu1
    6.0-9ubuntu1.1
    6.0-9ubuntu1.2
    6.0-9ubuntu1.3
    6.0-9ubuntu1.4
    6.0-9ubuntu1.5
    6.0-9ubuntu1.6

    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-2021-4217 | CVE-DB