Modzero did not want to report its findings through CrowdStrike’s HackerOne-based bug bounty program and the disclosure process did not go smoothly. The firm admitted that ‘the overall risk of the vulnerability is very limited’ due to the fact that elevated privileges are required for exploitation, but it wanted to publish a blog post - in addition to a technical advisory describing the issue - to complain about the disclosure process.
Modzero discovered that an attacker with admin privileges can bypass the token check on Windows devices and uninstall the sensor in an effort to remove the protection provided by CrowdStrike’s product. The sensor can be configured with uninstall protection, which prevents its removal without a special token. Specifically, the problem is related to the Falcon Sensor, a lightweight agent deployed on each end device. Researchers at Swiss security firm Modzero discovered an issue related to CrowdStrike’s Falcon endpoint detection and response product. CrowdStrike has provided some clarifications following the disclosure. A security firm has disclosed the details of an issue affecting a CrowdStrike product after what it described as a ‘ridiculous vulnerability disclosure process’.
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