Critical severity · published Jun 13, 2018
CVE-2018-11407
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
9.8
CVSS
2.4%
EPSS
No
On KEV
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
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.4% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SY
Symfony · Sensiolabs
2.8.0 before 2.8.37; 3.3.0 before 3.3.17; 3.4.0 before 3.4.7; 4.0.0 before 4.0.7 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-11407
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-11407
Vendor Advisory
https://symfony.com/blog/cve-2018-11407-unauthorized-access-on-a-misconfigured-ldap-server-when-using-an-empty-password
More from Symfony
9.8
CVE-2026-47767
Symfony: SymfonyRuntime CVE-2024-50340 Patch Bypass: Web Requests Can Still Set APP_ENV/APP_DEBUG via parse_str/SAPI Argv Mismatch
9.8
CVE-2024-51736
Symphony process is a module for the Symphony PHP framework which executes commands in sub-processes
9.8
CVE-2019-18889
An issue was discovered in Symfony 3.4.0 through 3.4.34, 4.2.0 through 4.2.11, and 4.3.0 through 4.3.7
9.8
CVE-2019-11325
An issue was discovered in Symfony before 4.2.12 and 4.3.x before 4.3.8
9.8
CVE-2017-11365
Certain Symfony products are affected by: Incorrect Access Control