National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-4423 Detail

Current Description

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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (V3.0 legend)
Impact Score: 3.6
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
http://www.debian.org/security/2016/dsa-3588
https://github.com/symfony/symfony/pull/18733
https://symfony.com/blog/cve-2016-4423-large-username-storage-in-session Vendor Advisory

Technical Details

Vulnerability Type (View All)

  • Resource Management Errors (CWE-399)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
2.3.40
 cpe:2.3:a:sensiolabs:symfony:2.7.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.7.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.7.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.7.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.7.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.7.5:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.7.6:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.7.7:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.7.8:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.7.9:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.7.10:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.7.11:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.7.12:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.8.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.8.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.8.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.8.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.8.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:2.8.5:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:3.0.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:3.0.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:3.0.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:3.0.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:3.0.4:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:sensiolabs:symfony:3.0.5:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

2 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-4423
NVD Published Date:
06/01/2016
NVD Last Modified:
06/03/2016