UBUNTU-CVE-2020-7065

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    UBUNTU-CVE-2020-7065

    Published: 1 Apr 2020Last Modified: 22 Apr 2026
    Upstream:
    CVE-2020-7065

    Summary:

    Details: In PHP versions 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using mb_strtolower() function with UTF-32LE encoding, certain invalid strings could cause PHP to overwrite stack-allocated buffer. This could lead to memory corruption, crashes and potentially code execution.

    References: https://ubuntu.com/security/CVE-2020-7065, http://git.php.net/?p=php-src.git;a=commitdiff;h=69155120e68d2e614d5c300974a1a5610cfa2e8b;hp=e2b5f18896ca4169859c8ca058a9926aad6e3763, https://ubuntu.com/security/notices/USN-4330-1, https://ubuntu.com/security/notices/USN-4330-2, https://www.cve.org/CVERecord?id=CVE-2020-7065

    Affected packages

    Package

    Name: php7.4

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -7.4.3-4ubuntu1.1

    Affected versions

    7.4.3-4build1
    7.4.3-4build2
    7.4.3-4ubuntu1

    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-2020-7065 | CVE-DB