CVE-2019-4329

Vulnerability

IBM Security Guardium Big Data Intelligence (SonarG) version 4.0 uses incomplete blacklisting for input validation. This allows attackers to bypass application controls designed to restrict input. The vulnerability is present in the SonarG component and requires a valid user account with low privileges on the system [1].

Exploitation

An attacker must first authenticate to the application with valid credentials. Once authenticated, the attacker can send crafted input that circumvents the incomplete blacklist-based validation. The exact steps are not disclosed in detail, but the incomplete filtering permits the attacker to inject values that would normally be blocked [1].

Impact

Successful exploitation leads to a direct impact on system and data integrity. The CVSS vector indicates a low impact on integrity (I:L) and no impact on confidentiality or availability. The attacker can modify system data or application logic within the constraints of their low-privilege role [1].

Mitigation

IBM has not released a patch or fixed version in the available reference. The security bulletin states that no workarounds or mitigations are currently available. Users are advised to monitor the IBM support page for future updates [1].