The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a vigilance database and tools to fix them.

Vulnerability of Symfony: privilege escalation via Guard Session Fixation

Synthesis of the vulnerability 

An attacker can bypass restrictions via Guard Session Fixation of Symfony, in order to escalate his privileges.
Impacted software: Debian, eZ Platform, Fedora, Symfony.
Severity of this computer vulnerability: 2/4.
Creation date: 25/05/2018.
Revision date: 28/05/2018.
Références of this announce: CVE-2018-11385, DLA-1707-1, DSA-4262-1, EZSA-2018-004, FEDORA-2018-96d770ddc9, FEDORA-2018-ba0b683c10, FEDORA-2018-c8ddc44bbb, FEDORA-2018-eba0006df2, VIGILANCE-VUL-26230.

Description of the vulnerability 

An attacker can bypass restrictions via Guard Session Fixation of Symfony, in order to escalate his privileges.
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

This weakness note impacts software or systems such as Debian, eZ Platform, Fedora, Symfony.

Our Vigil@nce team determined that the severity of this threat note is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this computer weakness.

Solutions for this threat 

Symfony: version 4.0.11.
The version 4.0.11 is fixed:
  https://symfony.com/download

Symfony: version 3.4.11.
The version 3.4.11 is fixed:
  https://symfony.com/download

Symfony: version 3.3.17.
The version 3.3.17 is fixed:
  https://symfony.com/download

Symfony: version 2.8.41.
The version 2.8.41 is fixed:
  https://symfony.com/download

Symfony: version 2.7.48.
The version 2.7.48 is fixed:
  https://symfony.com/download

Debian 8: new symfony packages.
New packages are available:
  Debian 8: symfony 2.3.21+dfsg-4+deb8u4

Debian 9: new symfony packages.
New packages are available:
  Debian 9: symfony 2.8.7+dfsg-1.3+deb9u1

eZ Platform: solution for Symfony.
The solution is indicated in information sources.

Fedora 27: new php-symfony3 packages.
New packages are available:
  Fedora 27: php-symfony3 3.3.17-1.fc27

Fedora 28: new php-symfony3 packages.
New packages are available:
  Fedora 28: php-symfony3 3.4.11-1.fc28

Fedora 28: new php-symfony4 packages.
New packages are available:
  Fedora 28: php-symfony4 4.0.11-1.fc28

Fedora 28: new php-symfony packages.
New packages are available:
  Fedora 28: php-symfony 2.8.41-1.fc28
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

Computer vulnerabilities tracking service 

Vigil@nce provides an applications vulnerabilities alert. The Vigil@nce security watch publishes vulnerability bulletins about threats impacting the information system.