ALSA-2021:4256

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    ALSA-2021:4256

    Published: 9 Nov 2021Last Modified: 4 Feb 2026

    Summary: Moderate: graphviz security update

    Details: Graphviz is open-source graph-visualization software. Graph visualization is a way of representing structural information as diagrams of abstract graphs and networks. It has important applications in networking, bioinformatics, software engineering, database and web design, machine learning, and in visual interfaces for other technical domains. Security Fix(es): * graphviz: off-by-one in parse_reclbl() in lib/common/shapes.c (CVE-2020-18032) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

    References: https://errata.almalinux.org/8/ALSA-2021-4256.html, https://vulners.com/cve/CVE-2020-18032

    Affected packages

    Package

    Name: graphviz

    Purl: pkg:rpm/almalinux/graphviz

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.40.1-43.el8

    Affected versions

    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
    ALSA-2021:4256 | CVE-DB