CVE-2018-1391 in Financial Transaction Manager
Summary
by MITRE
IBM Financial Transaction Manager 3.0.4 and 3.1.0 for ACH Services for Multi-Platform could allow an authenticated user to execute a specially crafted command that could cause a denial of service. IBM X-Force ID: 138376.
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Analysis
by VulDB Data Team • 02/04/2021
The vulnerability identified as CVE-2018-1391 affects IBM Financial Transaction Manager versions 3.0.4 and 3.1.0 specifically within the ACH Services for Multi-Platform component. This issue represents a significant security concern for financial institutions that rely on IBM's transaction processing infrastructure, as it creates an authenticated command execution pathway that could be exploited to disrupt critical financial services operations. The vulnerability exists within the command processing mechanism of the ACH services module, which handles automated clearing house transactions that form the backbone of electronic fund transfers in the financial sector.
The technical flaw manifests as a command injection vulnerability that occurs when the system processes specially crafted commands from authenticated users. This type of vulnerability falls under CWE-77 which specifically addresses command injection flaws in software systems. The vulnerability is particularly dangerous because it requires only authentication to exploit, meaning that an attacker with legitimate credentials could leverage this weakness to execute arbitrary commands on the system. The command injection occurs during the processing of user-supplied input that is not properly sanitized or validated before being executed within the system's command execution context.
The operational impact of this vulnerability extends beyond simple denial of service, as it could potentially allow attackers to gain unauthorized access to sensitive financial data, modify transaction records, or disrupt the entire financial processing pipeline. In a financial environment where transaction integrity and availability are paramount, this vulnerability could lead to significant business disruption and financial losses. The attack could result in complete system unavailability for legitimate users while potentially allowing unauthorized data manipulation or exfiltration. The vulnerability affects the core transaction processing capabilities of the system, which could have cascading effects throughout the financial institution's operations, particularly during peak transaction periods when system reliability is most critical.
Organizations should implement multiple layers of defense to mitigate this vulnerability, including immediate patching of affected systems to the latest IBM security updates. Network segmentation and access controls should be reinforced to limit the scope of potential exploitation, while monitoring systems should be enhanced to detect unusual command execution patterns. The implementation of input validation and sanitization measures within the application code can help prevent malicious command injection attempts. Additionally, regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in related systems, as this type of command injection flaw is often indicative of broader security weaknesses in financial transaction processing applications. Organizations should also consider implementing the principle of least privilege for user accounts and establish robust incident response procedures to address potential exploitation attempts.