CVE-2018-11406

Description

An issue was discovered in the Security component in Symfony 2.7.x before 2.7.48, 2.8.x before 2.8.41, 3.3.x before 3.3.17, 3.4.x before 3.4.11, and 4.0.x before 4.0.11. By default, a user's session is invalidated when the user is logged out. This behavior can be disabled through the invalidate_session option. In this case, CSRF tokens were not erased during logout which allowed for CSRF token fixation.

How to fix CVE-2018-11406

To remediate CVE-2018-11406, upgrade the affected package to a fixed version below.

• —upgrade to 3.4.12+dfsg-1 or later
• —upgrade to 2.7.48 or later
• —upgrade to 2.7.48 or later
• —upgrade to 2.7.48 or later
• —upgrade to 2.7.48 or later

Is CVE-2018-11406 being exploited?

Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.

Affected packages (5)

• from 0, < 3.4.12+dfsg-1
• >= 2.7.0, < 2.7.48
• >= 2.7.0, < 2.7.48
• >= 2.7.0, < 2.7.48
• >= 2.7.0, < 2.7.48

CVSS scores

References (14)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2018-11406
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2018-11406
• PATCHgithub.com/symfony/symfony
• WEBgithub.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-bundle/CVE-2018-11406.yaml