XSSUnauthorized modification of stored content, SAP security note 1494284

SAP security note 1494284, "XSS:Unauthorized modification of stored content". Below are the symptom and SAP recommended solution.

Description

Symptom

The program could be abused by a malicious user, who could modify application content, persist the modified content without authorization, and potentially obtain authentication information from other legitimate users.

Solution

Implement the corrections attached to the note.

Reason and prerequisites

Stored cross-site scripting can be used to permanently modify displayed content from a web site, allowing the malicious user to embed content that is rendered automatically, without the need to individually target victims.

Stored cross-site scripting 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 could use it to impersonate the user and access all information with the same rights as the target user.

References

• Potential disclosure of persisted data in CRM-PCF
• Personalization settings are not saved in the pop-up window