Unauthorized modification displayed content ECM_BSP_LIBRAY, SAP security note 1702304

SAP security note 1702304, “Unauthorized Modification in ECM_BSP_LIBRARY”, is a program error note released on 08.05.2012. Below are the symptom and SAP recommended solution.

Description

Symptom

ECM_BSP_LIBRARY can be abused by an attacker, allowing them to modify displayed application content without authorization, and to potentially obtain authentication information from other legitimate users.

Solution

Implement the attached correction instructions or import the Support Package.

Reason and prerequisites

Pages within ECM_BSP_LIBRARY do not sufficiently encode OUTPUT parameters, resulting in a reflected cross-site scripting issue. A reflected cross-site scripting attack can be used to non-permanently deface or modify displayed content from a website.

Reflected cross-site scripting can be used to steal another user’s authentication information, such as data relating to their current session. An attacker who gains access to this data may use it to impersonate the user and access all information with the same rights as the target user. If an administrator is impersonated, the security of the application may be fully compromised.