Unauthorized modification of displayed content in CMS/TCS, SAP security note 1475767

SAP security note 1475767, "Unauthorized modification of displayed content in CMS/TCS". Below are the symptom and SAP recommended solution.

Description

Symptom

The TCS Deploy Servlet call could be abused by a malicious user, who could modify displayed application content without authorization and potentially obtain authentication information from other legitimate users.

Solution

Import the relevant Support Package. The corrections do not have any influence on the normal functions of the application and no further adjustments or configurations are required.

Reason and prerequisites

Pages within the TCS Deploy Servlet do 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 web site.

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 could use it to impersonate the user and access all information with the same rights as the target user.

If an administrator is impersonated, the application’s security could be fully compromised.

CVSS

Score 4.3 Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N