The article surveys seven vulnerabilities in CICS and IMS mainframe applications and demonstrates testing methods using Hack3270 and CICSPwn. It emphasizes the ongoing need for regular mainframe security testing as CICS remains central to transaction management across industries.
#CICS #IMS #Hack3270 #CICSPwn #NetSPI
#CICS #IMS #Hack3270 #CICSPwn #NetSPI
Keypoints
- Significant advancements in penetration testing for CICS and IMS applications highlight rising capabilities and methodologies.
- Over 90% of mainframes use CICS for transaction management, underscoring its critical role in many sectors.
- CICS and IMS are essential across industries such as banking, insurance, retail, government, and telecommunications.
- Common vulnerabilities include unencrypted data transmission, weak password policies, hidden/protected fields, and potential for remote code execution.
- Open-source and commercial tools like Hack3270 and CICSPwn are central to discovering and exploiting mainframe weaknesses.
- Regular testing, monitoring, and reviews of security controls are necessary to protect mainframe environments.
- New testing approaches and tooling continue to reveal weaknesses in mainframe systems, driving ongoing security evolution.
MITRE Techniques
- [T1040] Network Sniffing – Conduct Nmap port scans to identify insecure ports. Quote: ‘Conduct Nmap port scans to identify insecure ports.’
- [T1110] Brute Force – Brute-force or test password complexity during authentication. Quote: ‘input a valid password but using invalid mixed case. For example, if the password is Netspi27, submit nETSPI27.’
- [T1071] Application Layer Protocol – Hidden fields exploitation using tools to discover hidden fields in CICS applications. Quote: ‘Use Hack3270 to discover hidden fields in CICS applications.’
- [T1203] Exploitation for Privilege – Testing locked or protected fields for vulnerabilities. Quote: ‘Test locked fields for vulnerabilities using Hack3270.’
- [T1078] Valid Accounts – Assess whether low-privileged users can access administrative transactions. Quote: ‘Check if low-privileged users can access administrative transactions.’
- [T1070] Indicator Removal on Host – Test for authentication bypass by exiting authentication workflows. Quote: ‘test for authentication bypass by exiting authentication workflows.’
- [T1059] Command and Scripting Interpreter – Using CECI commands to submit JCL and test for vulnerabilities. Quote: ‘Using the CECI command to submit JCL…’
Indicators of Compromise
- [Port] 21, 23 – Insecure data transmission ports (FTP/Telnet) observed as allowed in the environment. Context: ‘In the Nmap results seen above, unencrypted Telnet over port 23 and unencrypted FTP over port 21 are permitted for use.’
- [URL] https://github.com/gglessner/hack3270 – Hack3270 open-source tool reference for exploring hidden/protected fields. Context: referenced in the Hidden Fields Exploitation section.
- [URL] https://www.netspi.com/blog/technical-blog/mainframe-penetration-testing/hacking-cics-applications/ – NetSPI article page (source and context). Context: article source link at bottom.
Read more: https://www.netspi.com/blog/technical-blog/mainframe-penetration-testing/hacking-cics-applications/