CVE-2019-4032

Vulnerability

CVE-2019-4032 is a blind SQL injection vulnerability in IBM Financial Transaction Manager for Digital Payments for Multi-Platform, specifically in the ACH Services component. Versions 3.1.0.0 through 3.1.0.3 are affected. The flaw resides in a web service endpoint that does not properly sanitize user-supplied input, allowing an attacker to inject malicious SQL statements into backend database queries. No special configuration beyond the default product setup is required for the vulnerable code path to be reachable [1].

Exploitation

A remote attacker with network access to the affected service and valid low-privilege credentials (CVSS v3.0 Authentication Required: PR:L) can send specially crafted SQL statements within a web service request. The attack requires no user interaction (UI:N) and can be exploited without any privilege escalation in the application layer. The SQL injection is blind, meaning the attacker may not see direct error messages, but can infer results through timing or boolean-based responses [1].

Impact

Successful exploitation allows the attacker to view, add, modify, or delete information in the back-end database. This affects the confidentiality, integrity, and availability of the data, though the CVSS v3.0 vector scores each as low (C:L/I:L/A:L). The attacker gains read/write access to the database at the privilege level of the application's database account, which could include sensitive financial transaction data [1].

Mitigation

IBM has addressed this vulnerability in the remediation for Financial Transaction Manager for ACH Services. The fix is available via the IBM Support website (see Security Bulletin referenced in [1]). Users should upgrade to a version beyond 3.1.0.3. No workarounds or mitigations are provided by the vendor [1].