Picus Security Offers Exploitability Validation Without Live Exploits
Picus Security has developed a method to test vulnerability exploitability by analyzing underlying attack techniques, avoiding the risks of live exploit execution.
Organizations often face a critical challenge when assessing the true risk posed by newly discovered vulnerabilities: how to validate exploitability without risking damage to sensitive systems. Many vulnerabilities cannot be safely tested with live exploits due to the absence of public exploits or the high-stakes nature of the affected infrastructure. Picus Security has introduced a novel approach to address this gap, focusing on validating the underlying attack techniques and tactics (TTPs) that a given exploit would rely upon, rather than executing the exploit itself.
This technique, termed TTP chaining, allows security teams to determine if a vulnerability is truly exploitable in their environment by testing the foundational mechanisms an attacker would use. Instead of deploying a potentially destructive exploit, security professionals can simulate the precursor actions or the core exploit logic in a controlled manner. This involves identifying the specific TTPs associated with a vulnerability, such as specific network protocols, data manipulation methods, or privilege escalation vectors, and then testing for the presence and effectiveness of these TTPs within the target environment.
The primary benefit of TTP chaining is its ability to provide actionable insights into exploitability without the inherent risks of live exploit execution. This is particularly crucial for organizations managing critical infrastructure, industrial control systems (ICS), or highly sensitive data repositories where any disruption could have severe consequences. By focusing on TTPs, security teams can gain confidence in their risk assessments and prioritize patching or mitigation efforts more effectively, even when direct exploit testing is not feasible.
Picus Security's methodology involves a systematic process of dissecting potential exploits into their constituent TTPs. Once these TTPs are identified, security teams can leverage existing security testing tools or custom scripts to probe for their presence and effectiveness. For instance, if an exploit relies on a specific type of buffer overflow, TTP chaining might involve testing the application's input validation mechanisms for weaknesses that could lead to such an overflow, rather than attempting the overflow itself.
This approach also aids in threat hunting and incident response. By understanding the TTPs associated with known exploits, security analysts can more effectively search for signs of compromise within their networks. If an attacker has successfully exploited a vulnerability, they would likely have employed the associated TTPs, leaving detectable traces. TTP chaining provides a framework for developing more precise detection rules and threat intelligence.
While TTP chaining offers a safer alternative to live exploit testing, it is not a complete replacement. The ultimate confirmation of exploitability often comes from successful exploitation. However, for many scenarios, especially those involving high-risk environments or the absence of readily available exploits, TTP chaining provides an invaluable intermediate step. It empowers organizations to make more informed decisions about vulnerability management and security posture.
The broader implication of this technique is a shift towards more proactive and risk-aware vulnerability management. Instead of waiting for exploits to become public and widely weaponized, organizations can use methods like TTP chaining to anticipate potential threats and assess their preparedness. This proactive stance is essential in today's rapidly evolving threat landscape, where new vulnerabilities are disclosed at an unprecedented rate.