Check Point Advisories

Typo3 CMS SanitizeLocalUrl Cross-Site Scripting (CVE-2015-5956)

Check Point Reference: CPAI-2015-1191
Date Published: 8 Oct 2015
Severity: High
Last Updated: Thursday 22 October, 2015
Source: Typo3 TYPO3-CORE-SA-2015-009
Industry Reference:CVE-2015-5956
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable? TYPO3 Association TYPO3 4.5.40 and prior
TYPO3 Association TYPO3 6.2.14 and prior
Vulnerability Description A cross-site scripting vulnerability has been reported in Typo3 CMS. The vulnerability is due to the sanitizeLocalUrl function incorrectly validating the returnUrl and redirect_url HTTP request parameters. A remote attacker can exploit this vulnerability by enticing a user to open a specially crafted link. Successful exploitation will result in the attacker-controlled script code being executed in the target user's browser in the context of the affected site.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Typo3 CMS SanitizeLocalUrl Cross-Site Scripting protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Server Enforcement Violation.
Attack Information:  Typo3 CMS SanitizeLocalUrl Cross-Site Scripting

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