#VU53200 Observable response discrepancy in Symfony - CVE-2021-21424

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Main Vulnerability Database Vulnerabilities #VU53200

#VU53200 Observable response discrepancy in Symfony - CVE-2021-21424

Published: May 12, 2021


Vulnerability identifier: #VU53200
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-21424
CWE-ID: CWE-204
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Symfony
Software vendor:
SensioLabs

Description

The vulnerability allows a remote attacker to enumerate application users.

The vulnerability exists due to application returns different responses based on presence of user account name in application database. A remote attacker enumerate application users.


Remediation

Install updates from vendor's website.

External links