Do We Have to Fix ALL the Critical Vulnerabilities?
Dec 7, 2023
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David Christensen, VP, CISO, PlanSource, joins the hosts to discuss the challenge of focusing patching efforts on the most critical vulnerabilities. They emphasize the need for prioritization based on business impact, discuss different types of vulnerabilities, and highlight the challenges faced by organizations. The importance of learning vulnerability management basics is also emphasized.
Patching all vulnerabilities is resource-intensive, so it's important to prioritize based on exposure and exploitability, not just CVSS metrics.
To effectively prioritize vulnerabilities, organizations need to consider asset value, business impact, and contextual awareness, aligning with a risk-based approach.
Deep dives
Prioritizing Patching Efforts
Patching all vulnerabilities is resource-intensive, so it's important to focus on the ones that pose the most risk. Relying solely on CVSS metrics can lead to wasting time on low-risk vulnerabilities. The key is to prioritize based on exposure and exploitability. Critical vulnerabilities still need attention, but a risk-based approach is necessary to allocate limited resources effectively.
Contextualizing Vulnerability Management
To effectively prioritize vulnerabilities, it's crucial to consider the asset value and business impact, not just the CVSS scores. Understanding how vulnerabilities impact the organization's infrastructure and operations is critical. Factors like exposure, exploitation, and user access can influence the urgency of patching. It's essential to have a risk-based approach that aligns with the business's risk tolerance level.
The Challenge of External Pressure
Responding to customer demands and the pressure from vendors or auditors can complicate vulnerability management. Customer inquiries after major vulnerabilities or security incidents may require rapid responses. While it's important to address concerns, organizations need to balance the impact on their operations and align with their risk-based patching approach.
Balancing Automation and Manual Analysis
Combining manual analysis with tools like EPSS and CVSS is crucial. Manual evaluation provides contextual awareness and allows for more accurate decision-making. The lack of contextual awareness in vulnerability scoring systems makes hands-on analysis necessary. However, with experience and the right tools, like advanced filtering, organizations can optimize their vulnerability management process.
How do you actually focus your patching efforts on the vulnerabilities that are seen as universally holding the most risk?
With limited resources, is it possible to "patch all the things"?
How do we focus patching efforts to fix the most vital issues quickly?
What are the risks we’re dealing with?
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