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Best Practices to Configure BIG-IP LTM Systems to Encrypt HTTP Persistence Cookies
CISA has observed cyber threat actors leveraging unencrypted persistent cookies managed by the F5 BIG-IP Local Traffic Manager (LTM) module to enumerate other non-internet facing devices on the network. F5 BIG-IP is a suite of hardware and software solutions designed to manage and secure network traffic. A malicious cyber actor could leverage the information gathered from unencrypted persistence cookies to infer or identify additional network resources and potentially exploit vulnerabilities found in other devices present on the network.
CISA urges organizations to encrypt persistent cookies employed in F5 BIG-IP devices and review the following article for details on how to configure the BIG-IP LTM system to encrypt HTTP cookies. Additionally, F5 has developed an iHealth heuristic to detect and alert customers when cookie persistence profiles do not have encryption enabled. BIG-IP iHealth is a diagnostic tool that "evaluates the logs, command output, and configuration of a BIG-IP system against a database of known issues, common mistakes, and published F5 best practices" to help users verify the optimal operation of their BIG-IP systems.
CISA Releases Twenty-One Industrial Control Systems Advisories
CISA released twenty-one Industrial Control Systems (ICS) advisories on October 10, 2024. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS.
- ICSA-24-284-01 Siemens SIMATIC S7-1500 and S7-1200 CPUs
- ICSA-24-284-02 Siemens Simcenter Nastran
- ICSA-24-284-03 Siemens Teamcenter Visualization and JT2Go
- ICSA-24-284-04 Siemens SENTRON PAC3200 Devices
- ICSA-24-284-05 Siemens Questa and ModelSim
- ICSA-24-284-06 Siemens SINEC Security Monitor
- ICSA-24-284-07 Siemens JT2Go
- ICSA-24-284-08 Siemens HiMed Cockpit
- ICSA-24-284-09 Siemens PSS SINCAL
- ICSA-24-284-10 Siemens SIMATIC S7-1500 CPUs
- ICSA-24-284-11 Siemens RUGGEDCOM APE1808
- ICSA-24-284-12 Siemens Sentron Powercenter 1000
- ICSA-24-284-13 Siemens Tecnomatix Plant Simulation
- ICSA-24-284-14 Schneider Electric Zelio Soft 2
- ICSA-24-284-15 Rockwell Automation DataMosaix Private Cloud
- ICSA-24-284-16 Rockwell Automation DataMosaix Private Cloud
- ICSA-24-284-17 Rockwell Automation Verve Asset Manager
- ICSA-24-284-18 Rockwell Automation Logix Controllers
- ICSA-24-284-19 Rockwell Automation PowerFlex 6000T
- ICSA-24-284-20 Rockwell Automation ControlLogix
- ICSA-24-284-21 Delta Electronics CNCSoft-G2
CISA encourages users and administrators to review newly released ICS advisories for technical details and mitigations.