CVE-2016-4423

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The attemptAuthentication function in Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php in Symfony before 2.3.41, 2.7.x before 2.7.13, 2.8.x before 2.8.6, and 3.0.x before 3.0.6 does not limit the length of a username stored in a session, which allows remote attackers to cause a denial of service (session storage consumption) via a series of authentication attempts with long, non-existent usernames.

La función attemptAuthentication en Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php en Symfony en versiones anteriores a 2.3.41, 2.7.x en versiones anteriores a 2.7.13, 2.8.x en versiones anteriores a 2.8.6 y 3.0.x en versiones anteriores a 3.0.6 no limita la longitud de un nombre de usuario almacenado en una sesión, lo que permite a atacantes remotos provocar una denegación de servicio (consumo de almacenamiento de sesión) a través de una series de intentos de autenticación con nombres de usuario largos que no existen.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-05-02 CVE Reserved
2016-05-30 CVE Published
2023-03-07 EPSS Updated
2024-08-06 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-399: Resource Management Errors

CAPEC

References (3)

URL	Tag	Source
https://github.com/symfony/symfony/pull/18733	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://www.debian.org/security/2016/dsa-3588	2016-06-03
https://symfony.com/blog/cve-2016-4423-large-username-storage-in-session	2016-06-03

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				<= 2.3.40 Search vendor "Sensiolabs" for product "Symfony" and version " <= 2.3.40"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.7.0 Search vendor "Sensiolabs" for product "Symfony" and version "2.7.0"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.7.1 Search vendor "Sensiolabs" for product "Symfony" and version "2.7.1"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.7.2 Search vendor "Sensiolabs" for product "Symfony" and version "2.7.2"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.7.3 Search vendor "Sensiolabs" for product "Symfony" and version "2.7.3"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.7.4 Search vendor "Sensiolabs" for product "Symfony" and version "2.7.4"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.7.5 Search vendor "Sensiolabs" for product "Symfony" and version "2.7.5"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.7.6 Search vendor "Sensiolabs" for product "Symfony" and version "2.7.6"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.7.7 Search vendor "Sensiolabs" for product "Symfony" and version "2.7.7"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.7.8 Search vendor "Sensiolabs" for product "Symfony" and version "2.7.8"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.7.9 Search vendor "Sensiolabs" for product "Symfony" and version "2.7.9"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.7.10 Search vendor "Sensiolabs" for product "Symfony" and version "2.7.10"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.7.11 Search vendor "Sensiolabs" for product "Symfony" and version "2.7.11"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.7.12 Search vendor "Sensiolabs" for product "Symfony" and version "2.7.12"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.8.0 Search vendor "Sensiolabs" for product "Symfony" and version "2.8.0"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.8.1 Search vendor "Sensiolabs" for product "Symfony" and version "2.8.1"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.8.2 Search vendor "Sensiolabs" for product "Symfony" and version "2.8.2"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.8.3 Search vendor "Sensiolabs" for product "Symfony" and version "2.8.3"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.8.4 Search vendor "Sensiolabs" for product "Symfony" and version "2.8.4"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				2.8.5 Search vendor "Sensiolabs" for product "Symfony" and version "2.8.5"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				3.0.0 Search vendor "Sensiolabs" for product "Symfony" and version "3.0.0"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				3.0.1 Search vendor "Sensiolabs" for product "Symfony" and version "3.0.1"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				3.0.2 Search vendor "Sensiolabs" for product "Symfony" and version "3.0.2"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				3.0.3 Search vendor "Sensiolabs" for product "Symfony" and version "3.0.3"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				3.0.4 Search vendor "Sensiolabs" for product "Symfony" and version "3.0.4"		-		Affected
Sensiolabs Search vendor "Sensiolabs"		Symfony Search vendor "Sensiolabs" for product "Symfony"				3.0.5 Search vendor "Sensiolabs" for product "Symfony" and version "3.0.5"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected