Unauthorized modification in ITS-Service in PS-CLM, SAP security note 1675809

SAP security note 1675809, “Unauthorized modification in ITS-Service in PS-CLM”. Below are the symptom, SAP recommended solution and the affected software components.

Description

Symptom

Application Component PS-CLM 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

Please apply this note or import the changes via the relevant support package. The corrections of this note do only have a protecting effect if the corrections of notes 1621946 and 1488500 are implemented.

Reason and prerequisites

ITS Service/s (SR10) within Application Component PS-CLM do not sufficiently encode OUTPUT parameters, resulting in a cross-site scripting issue.

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

Affected components

• SAP_APPL 500
• SAP_APPL 600
• SAP_APPL 602
• SAP_APPL 603
• SAP_APPL 604
• SAP_APPL 605
• SAP_APPL 606