Springing 4 Shells: The Tale of Two Spring CVEs
The Splunk Threat Research Team (STRT) has been heads-down attempting to understand, simulate, and detect the Spring4Shell attack vector. This post shares detection opportunities STRT found in different stages of successful Spring4Shell exploitation. At the time of writing, there are two publicly known CVEs: CVE-2022-22963, and CVE-2022-22965. The Splunk Security Content below is designed to cover exploitation attempts across both CVEs.