CVE-2017-16653 Information

Description

An issue was discovered in Symfony before 2.7.38 2.8.31 3.2.14 3.3.13 3.4-BETA5 and 4.0-BETA5. The current implementation of CSRF protection in Symfony (Version =2) does not use different tokens for HTTP and HTTPS; therefore the token is subject to MITM attacks on HTTP and can then be used in an HTTPS context to do CSRF attacks.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Reference

https://github.com/symfony/symfony/pull/24992 https://symfony.com/blog/cve-2017-16653-csrf-protection-does-not-use-different-tokens-for-http-and-https https://www.debian.org/security/2018/dsa-4262

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.9