Unauthorized modification of displayed content in WEBCUIF, SAP security note 1722446

SAP security note 1722446, "Unauthorized modification of displayed content in WEBCUIF", is a program error note released on 11.09.2012. Below are the symptom and SAP recommended solution.

Description

Symptom

UIF_CALLBACK service 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

Please install this SAP Note 1722446.

Reason and prerequisites

The URL within the UIF_CALLBACK service does not sufficiently encode input 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.