UBUNTU-CVE-2020-28013

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    UBUNTU-CVE-2020-28013

    Published: 4 May 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2020-28013

    Summary:

    Details: Exim 4 before 4.94.2 allows Heap-based Buffer Overflow because it mishandles "-F '.('" on the command line, and thus may allow privilege escalation from any user to root. This occurs because of the interpretation of negative sizes in strncpy.

    References: https://ubuntu.com/security/CVE-2020-28013, https://ubuntu.com/security/notices/USN-4934-1, https://ubuntu.com/security/notices/USN-4934-2, https://www.cve.org/CVERecord?id=CVE-2020-28013

    Affected packages

    Package

    Name: exim4

    Purl: pkg:deb/ubuntu/[email protected]+esm3?arch=source&distro=trusty/esm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.82-3ubuntu2.4+esm3

    Affected versions

    4.80-7ubuntu3

    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-2020-28013 | CVE-DB