Kibana Timelion Prototype Pollution Remote Code Execution
Posted on 09 September 2023
Kibana versions before 5.6.15 and 6.6.1 contain an arbitrary code execution flaw in the Timelion visualizer. An attacker with access to the Timelion application could send a request that will attempt to execute javascript code. This leads to an arbitrary command execution with permissions of the Kibana process on the host system. Exploitation will require a service or system reboot to restore normal operation. The WFSDELAY parameter is crucial for this exploit. Setting it too high will cause MANY shells (50-100+), while setting it too low will cause no shells to be obtained. WFSDELAY of 10 for a docker image caused 6 shells.
