Unauthorized modification of displayed content in SHP, SAP security note 1343029

SAP security note 1343029, “Unauthorized modification of displayed content in SHP”, is a program error note released on April 12, 2011. Below are the symptom and SAP recommended solution.

Description

Symptom

The shopping cart basic data screen can be abused by a malicious user, allowing them to modify displayed application content without authorization, and to potentially obtain authentication information from other legitimate users.

Solution

This note will fix the vulnerability of allowing code injection by malicious web users into the web pages viewed by other users, thereby preventing the transfer of critical information.

For resolution of the problem, please import the relevant Support Package or implement the attached correction instructions.

Reason and prerequisites

The basic item data screen within the shopping cart 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. A malicious user 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.

References