Authentication bypass in Symfony

This security advisory describes one high risk vulnerability.


1) Improper Authentication


Risk: High


CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C] [PCI]


CVE-ID: CVE-2021-32693


CWE-ID: CWE-287 - Improper Authentication


Exploit availability: No


Description

The vulnerability allows a remote attacker to bypass authentication process.


The vulnerability exists due to an unspecified error in processing authentication requests. A remote attacker can bypass authentication process and gain unauthorized access to the application.


Mitigation

Install updates from vendor's website.


Vulnerable software versions

Symfony: 5.0.0, 5.0.1, 5.0.2, 5.0.3, 5.0.4, 5.0.5, 5.0.6, 5.0.7, 5.0.8, 5.0.9, 5.0.10, 5.0.11, 5.1.0, 5.1.1, 5.1.2, 5.1.3, 5.1.4, 5.1.5, 5.1.6, 5.1.7, 5.1.8, 5.1.9, 5.1.10, 5.1.11, 5.2.0, 5.2.1, 5.2.2, 5.2.3, 5.2.4, 5.2.5, 5.2.6, 5.2.7, 5.2.8, 5.2.9, 5.2.10, 5.3.0, 5.3.1


CPE
External links

https://github.com/symfony/symfony/releases/tag/v5.3.2


Q & A


Can this vulnerability be exploited remotely?


Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.


Is there known malware, which exploits this vulnerability?


No. We are not aware of malware exploiting this vulnerability.




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