USN-4294-1

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    USN-4294-1

    Published: 2 Mar 2020Last Modified: 27 Apr 2026

    Summary: OpenSMTPD vulnerabilities

    Details: It was discovered that OpenSMTPD mishandled certain input. A remote, unauthenticated attacker could use this vulnerability to execute arbitrary shell commands as any non-root user. (CVE-2020-8794) It was discovered that OpenSMTPD did not properly handle hardlinks under certain conditions. An unprivileged local attacker could read the first line of any file on the filesystem. (CVE-2020-8793)

    References: https://ubuntu.com/security/notices/USN-4294-1, https://ubuntu.com/security/CVE-2020-8793, https://ubuntu.com/security/CVE-2020-8794

    Affected packages

    Package

    Name: opensmtpd

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -6.0.3p1-1ubuntu0.2

    Affected versions

    6.0.2p1-2build1
    6.0.3p1-1
    6.0.3p1-1build1
    6.0.3p1-1ubuntu0.1

    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
    USN-4294-1 | CVE-DB