UBUNTU-CVE-2021-29454

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    UBUNTU-CVE-2021-29454

    Published: 10 Jan 2022Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-29454

    Summary:

    Details: Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from application logic. Prior to versions 3.1.42 and 4.0.2, template authors could run arbitrary PHP code by crafting a malicious math string. If a math string was passed through as user provided data to the math function, external users could run arbitrary PHP code by crafting a malicious math string. Users should upgrade to version 3.1.42 or 4.0.2 to receive a patch.

    References: https://ubuntu.com/security/CVE-2021-29454, https://github.com/smarty-php/smarty/commit/215d81a9fa3cd63d82fb3ab56ecaf97cf1e7db71, https://github.com/smarty-php/smarty/security/advisories/GHSA-29gp-2c3m-3j6m, https://packagist.org/packages/smarty/smarty, https://github.com/smarty-php/smarty/releases/tag/v3.1.42, https://www.smarty.net/docs/en/language.function.math.tpl, https://github.com/smarty-php/smarty/releases/tag/v4.0.2, https://ubuntu.com/security/notices/USN-5348-1, https://ubuntu.com/security/notices/USN-5348-3, https://ubuntu.com/security/notices/USN-5348-2, https://www.cve.org/CVERecord?id=CVE-2021-29454

    Affected packages

    Package

    Name: smarty3

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.1.21-1ubuntu1+esm1

    Affected versions

    3.1.21-1
    3.1.21-1ubuntu1

    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-2021-29454 | CVE-DB