SAP security note 1449340, "Unauthorized modification of displayed content in WEBCUIF". Below are the symptom and SAP recommended solution.
Description
Symptom
The calendar control in Components WEBUIF and CRMUIF can be abused by a malicious user, allowing them to modify displayed application content without authorization and potentially obtain authentication information from other legitimate users.
Solution
IMPORTANT: Once you have implemented this note, please clean your browser and server cache before running the application.
Please implement the attached correction instructions.
Reason and prerequisites
Some JavaScript components within WEBUIF and CRMUIF do not sufficiently encode output parameters, resulting in a reflected cross site scripting issue. A reflected XSS attack can be used to non-permanently deface or modify displayed content from a website. It can also 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 impersonate the user and access all information with the same rights as the target user. In the case of an administrator being impersonated, a full compromise of the application’s security can occur.
Full note on SAP: SAP Support Launchpad note 1449340
Detailed exploitation and proof-of-concept material for this note is maintained in the RedRays Security Platform. For access, contact [email protected].
