Component Type: TYPO3 CMS
Release Date: July 19, 2016
Vulnerable subcomponent: Import/Export
Vulnerability Type: Insecure Unserialize
Affected Versions: Versions 6.2.0 to 6.2.25, 7.6.0 to 7.6.9 and 8.0.0 to 8.2.0
Suggested CVSS v2.0: AV:N/AC:H/Au:S/C:P/I:P/A:P/E:P/RL:O/RC:C
CVE: not assigned yet
Problem Description: Failing to properly validate incoming import data, the Import/Export component is susceptible to insecure unserialize. To exploit this vulnerability a valid backend user account is needed.
Solution: In the released TYPO3 versions 6.2.26, 7.6.10 or 8.2.1 the Import/Export module is disabled by default for non-admin users. To re-activate the Import/Export module for trusted users, please add "options.impexp.enableImportForNonAdminUser = 1" to the users TSconfig.
Credits: Thanks to Franz Jahn who discovered and reported the issue.
General Note: All security related code changes are tagged so that you can easily look them up on our review system.