CVE-2022-34166 in CICS TX Standard
Summary
by MITRE • 07/08/2022
IBM CICS TX Standard and Advanced 11.1 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 229430.
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Analysis
by VulDB Data Team • 07/20/2022
The vulnerability identified as CVE-2022-34166 affects IBM CICS TX Standard and Advanced version 11.1, representing a critical cross-site scripting flaw that undermines the security posture of enterprise transaction processing systems. This vulnerability resides within the web user interface components of the CICS transaction processing system, which serves as a cornerstone for mainframe application integration and transaction management in large-scale business environments. The flaw specifically enables malicious actors to inject arbitrary JavaScript code through web-based interfaces, creating a persistent threat vector that can compromise user sessions and system integrity. The affected IBM CICS TX systems operate within trusted network environments where users expect secure transaction processing, making this vulnerability particularly dangerous as it exploits the implicit trust users place in the system interface.
The technical exploitation of this cross-site scripting vulnerability occurs through input validation failures within the web UI components of IBM CICS TX 11.1, which fails to properly sanitize user-supplied data before rendering it in web responses. This weakness falls under the Common Weakness Enumeration category CWE-79, which specifically addresses cross-site scripting vulnerabilities where web applications fail to validate or escape user input before incorporating it into dynamic web content. The vulnerability enables attackers to manipulate the web interface in ways that can capture session cookies, steal user credentials, or redirect users to malicious sites. The attack vector typically involves crafting malicious input that gets processed and displayed within the web UI, where the embedded JavaScript executes in the context of the victim's browser session, potentially accessing sensitive data or performing unauthorized actions on behalf of authenticated users. The vulnerability's impact extends beyond simple script execution as it can facilitate session hijacking and credential theft within the trusted session context that IBM CICS systems are designed to maintain.
The operational implications of CVE-2022-34166 are severe for organizations relying on IBM CICS TX for mission-critical transaction processing, as the vulnerability can lead to unauthorized access to sensitive business data and transaction records. Attackers exploiting this flaw can potentially access confidential information processed through CICS transactions, including financial data, customer records, and business-critical transaction details that flow through the system. The vulnerability's ability to compromise trusted sessions means that even users who have authenticated successfully can have their sessions hijacked, allowing attackers to perform actions with elevated privileges within the transaction processing environment. This threat is particularly concerning in regulated industries where transaction integrity and data protection are paramount, as the vulnerability could potentially violate compliance requirements and expose organizations to significant financial and legal risks. The impact extends to business continuity as compromised transaction processing systems can disrupt critical business operations and erode customer confidence in the organization's ability to protect sensitive information.
Organizations should implement immediate mitigation strategies to address this vulnerability, including deploying web application firewalls to filter malicious input, implementing strict input validation and output encoding mechanisms, and applying the latest security patches provided by IBM. The mitigation approach should align with established security frameworks such as the MITRE ATT&CK framework, specifically addressing the T1059.007 technique related to script injection attacks and the T1566 technique for social engineering through web interfaces. Security teams should conduct comprehensive vulnerability assessments to identify all instances of affected IBM CICS TX systems and implement network segmentation to limit the potential impact of successful exploitation attempts. Additionally, organizations should enhance their monitoring capabilities to detect anomalous behavior patterns that might indicate exploitation attempts, and establish incident response procedures specifically tailored to address cross-site scripting vulnerabilities in enterprise transaction processing environments. Regular security awareness training for system administrators and developers should emphasize the importance of secure coding practices and input validation to prevent similar vulnerabilities from emerging in other components of the transaction processing infrastructure.