IBM WebSphere Partner Gateway (WPG) 6.0.0 through 22.214.171.124 does not properly handle failures of signature verification, which might allow remote authenticated users to submit a crafted RosettaNet (aka RNIF) document to a backend application, related to (1) "altered service content" and (2) "digital signature foot-print."
CWE-287 - Improper Authentication
Improper (or broken) authentication attacks are widespread, and have accounted for many of the worst data breaches in recent years. Improper authentication attacks are a class of vulnerabilities where an attacker impersonates a legitimate user by exploiting weaknesses in either session management or credential management to gain access to the user’s account. This can result in disclosure of sensitive information, and can lead to system compromise, theft, identity theft, and fraud.