UBUNTU-CVE-2021-34121

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    UBUNTU-CVE-2021-34121

    Published: 18 Jul 2023Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-34121
    Aliases:
    USN-7189-1

    Summary:

    Details: An Out of Bounds flaw was discovered in htmodoc 1.9.12 in function parse_tree() in toc.cxx, this possibly leads to memory layout information leaking in the data. This might be used in a chain of vulnerability in order to reach code execution.

    References: https://ubuntu.com/security/CVE-2021-34121, https://github.com/michaelrsweet/htmldoc/issues/433, https://github.com/michaelrsweet/htmldoc/commit/c67bbd8756f015e33e4ba639a40c7f9d8bd9e8ab, https://www.cve.org/CVERecord?id=CVE-2021-34121, https://ubuntu.com/security/notices/USN-7189-1

    Affected packages

    Package

    Name: htmldoc

    Purl: pkg:deb/ubuntu/[email protected]+esm3?arch=source&distro=esm-infra-legacy/trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.8.27-8ubuntu1+esm3

    Affected versions

    1.8.27-8ubuntu1
    1.8.27-8ubuntu1+esm1
    1.8.27-8ubuntu1+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-2021-34121 | CVE-DB