UBUNTU-CVE-2021-23180

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    UBUNTU-CVE-2021-23180

    Published: 3 Jun 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-23180
    Aliases:
    USN-5198-1

    Summary:

    Details: A flaw was found in htmldoc in v1.9.12 and before. Null pointer dereference in file_extension(),in file.c may lead to execute arbitrary code and denial of service.

    References: https://ubuntu.com/security/CVE-2021-23180, https://github.com/michaelrsweet/htmldoc/issues/418, https://github.com/michaelrsweet/htmldoc/commit/19c582fb32eac74b57e155cffbb529377a9e751a, https://ubuntu.com/security/notices/USN-5198-1, https://www.cve.org/CVERecord?id=CVE-2021-23180

    Affected packages

    Package

    Name: htmldoc

    Purl: pkg:deb/ubuntu/[email protected]+esm4?arch=source&distro=esm-infra-legacy/trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.8.27-8ubuntu1
    1.8.27-8ubuntu1+esm1
    1.8.27-8ubuntu1+esm2
    1.8.27-8ubuntu1+esm3
    1.8.27-8ubuntu1+esm4

    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-2021-23180 | CVE-DB