CVE-2018-11407 Information

Description

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://symfony.com/blog/cve-2018-11407-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty-password

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8

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