UBUNTU-CVE-2020-28023

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    UBUNTU-CVE-2020-28023

    Published: 4 May 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2020-28023
    Aliases:
    USN-4934-1

    Summary:

    Details: Exim 4 before 4.94.2 allows Out-of-bounds Read. smtp_setup_msg may disclose sensitive information from process memory to an unauthenticated SMTP client.

    References: https://ubuntu.com/security/CVE-2020-28023, https://ubuntu.com/security/notices/USN-4934-1, https://www.cve.org/CVERecord?id=CVE-2020-28023

    Affected packages

    Package

    Name: exim4

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.90.1-1ubuntu1.8

    Affected versions

    4.89-5ubuntu1

    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-2020-28023 | CVE-DB