Improper Authentication in Symfony - CVE-2018-11407
Published: June 13, 2018 / Updated: July 17, 2020
Vulnerability identifier: #VU31284
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-11407
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
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.
Affected software
Symfony
Fedora
php-symfony
php-symfony3
Fedora
php-symfony
php-symfony3
How to mitigate CVE-2018-11407
Install update from vendor's website.
Symfony - update to 4.0.7
php-symfony - update to 2.8.42-1.fc27
php-symfony3 - update to 3.3.17-1.fc27
php-symfony - update to 2.8.42-1.fc27
php-symfony3 - update to 3.3.17-1.fc27