UBUNTU-CVE-2019-11366

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    UBUNTU-CVE-2019-11366

    Published: 20 Apr 2019Last Modified: 4 Feb 2026
    Upstream:
    CVE-2019-11366

    Summary:

    Details: An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current->next.

    References: https://ubuntu.com/security/CVE-2019-11366, https://pulsesecurity.co.nz/advisories/atftpd-multiple-vulnerabilities, https://sourceforge.net/p/atftp/code/ci/382f76a90b44f81fec00e2f609a94def4a5d3580/, https://ubuntu.com/security/notices/USN-4540-1, https://ubuntu.com/security/notices/USN-4643-1, https://www.cve.org/CVERecord?id=CVE-2019-11366

    Affected packages

    Package

    Name: atftp

    Purl: pkg:deb/ubuntu/[email protected]~0.16.04.1?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.7.git20120829-3.1~0.16.04.1

    Affected versions

    0.7.git20120829-2.1

    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