UBUNTU-CVE-2018-11407

    Dashboard / Vulnerabilities / UBUNTU-CVE-2018-11407

    UBUNTU-CVE-2018-11407

    Published: 13 Jun 2018Last Modified: 4 Feb 2026
    Upstream:
    CVE-2018-11407
    Aliases:
    USN-4836-1

    Summary:

    Details: An issue was discovered in the Ldap component in Symfony 2.8.x before 2.8.37, 3.3.x before 3.3.17, 3.4.x before 3.4.7, and 4.0.x before 4.0.7. It allows remote attackers to bypass authentication by logging in with a "null" password and valid username, which triggers an unauthenticated bind. NOTE: this issue exists because of an incomplete fix for CVE-2016-2403.

    References: https://ubuntu.com/security/CVE-2018-11407, https://symfony.com/blog/cve-2018-11407-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty-password, https://ubuntu.com/security/notices/USN-4836-1, https://www.cve.org/CVERecord?id=CVE-2018-11407

    Affected packages

    Package

    Name: symfony

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-1ubuntu0.1+esm1?arch=source&distro=esm-apps/bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.4.6+dfsg-1ubuntu0.1+esm1

    Affected versions

    2.8.7+dfsg-1.3ubuntu1

    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