Session Fixation Affecting symfony/symfony package, versions <2.7.48 >=2.8.0, <2.8.41 >=3.0.0, <3.3.17 >=3.4.0, <3.4.11 >=4.0.0, <4.0.11


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.51% (78th percentile)

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  • Snyk ID SNYK-PHP-SYMFONYSYMFONY-72200
  • published 30 May 2018
  • disclosed 30 May 2018
  • credit Chris Wilkinson

How to fix?

Upgrade symfony/symfony to versions 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11 or higher.

Overview

symfony/symfony is a set of reusable PHP components.

Affected versions of this package are vulnerable to Session Fixation via the Guard login feature. An attacker may be able to impersonate the victim towards the web application if the session id value was previously known to the attacker. This allows the attacker to access a Symfony web application with the attacked user's permissions.

Note:

  • The Guard authentication login feature must be enabled for the attack to be applicable.
  • The attacker must have access to the PHPSESSID cookie value or has successfully set a new value in the user's browser.

CVSS Scores

version 3.1
Expand this section

Snyk

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