What are the common challenges and pitfalls of vulnerability scanning and how to avoid them?

Scanners may not cover all assets or network segments. Scanning can affect network and system performance, leading to potential disruptions. Scanners might miss actual vulnerabilities, giving a false sense of security. Scanners may report vulnerabilities that do not exist. Insufficient knowledge about using vulnerability scanners and interpreting results can lead to ineffective vulnerability management. Lack of integration with other security tools.

When managing false positives, it's important to consider that: * a false positive today maybe not be a false positive tomorrow. * a false positive on one system may not be a false positive on another system. With that in mind, you should ensure that a robust process is in place to review false positives and ensure that they are scoped to the proper systems, and that they are regularly reviewed to ensure legitimate vulnerabilities don't slip through the cracks.

Falso positivo para mim é um problema, pois ambientes mudam constantemente, e o que é um falso positivo hoje pode n?o ser amanh?, por isso é importante gerenciar falsos positivos, uma vez que eles podem mudar ao longo do tempo ou variar entre sistemas. é importante ter um processo de revis?o de falsos positivos de forma regular, assim garantimos que est?o sendo aplicados aos sistemas corretos e que vulnerabilidades reais n?o est?o sendo ignoradas.

El desafío con los falsos positivos es lograr comprobar su existencia, razón por la cual, un escaneo de vulnerabilidades no debe ser un resultado sin antes haber comprobado y analizado la información, tanto en la existencia de la vulnerabilidad, como una validación con el equipo de TI para lograr precisar en la información

A verifica??o de vulnerabilidades é essencial para a seguran?a de TI, mas apresenta desafios que podem comprometer sua eficácia. Falsos Positivos e Negativos: Identificar vulnerabilidades sem gerar erros. Preven??o: Usar ferramentas confiáveis e metodologias combinadas. Falta de Atualiza??o: Ferramentas desatualizadas n?o detectam novas amea?as. Preven??o: Manter ferramentas atualizadas e equipes informadas. Escopo Inadequado: Verifica??es insuficientes deixam partes críticas sem análise. Preven??o: Definir um escopo claro e completo. Dependência de Automa??o: Ferramentas automáticas podem ser insuficientes. Preven??o: Complementar com revis?es manuais. Prioridades de Corre??o: Falta de prioridade leva a corre??es ineficientes.

Some might argue that if a vulnerability scan can affect the performance or availability of a sensitive or critical asset, then the sensitive or critical asset has a vulnerability that should be remediated! Said another way, that sensitive or critical asset is may have a denial-of-service vulnerability that your vulnerability scan accidentally identified.

Los escaneos de red vulnerabilidades que generen afectaciones en la red deberían ser importantes para la organización para verificar sus canales, sus respuestas antes estos eventos y en general para mejorar los procesos, no verlo como un bloqueo más, sino determinar como se puede mejorar. Ahora, los escaneos bajo un horario con alto tráfico es el que se debe realizar para que los equipos de respuesta logren identificar una situación así en caso de que ocurra bajo un escenario no controlado

In a post-COVID work-from-home world, you need to consider assets that are rarely (or never) connected to your corporate network, so looking into agent-based scans or other newer methods of vulnerability scans are key. RE: cloud/container/APIs - that is certainly an area for maturity in our industry. Today, there isn't a clear one-stop-shop for a tool or service that can do it all at the level of quality that you need to meet your security and compliance requirements, so you need to spend some time finding the right tools for the right use cases.

é importante ficar atento quando o scan n?o encontra nenhuma vulnerabilidade, principalmente em ambientes onde isso é incomum. Isso pode indicar um erro na varredura ou uma configura??o incorreta. Verifique a configura??o do scan e, se necessário, realize uma nova varredura. Inclua essa observa??o no relatório e valide que n?o houve falhas na processo. Situa??es como essa exige revis?o, pois confiar cegamente em um relatório "limpo" pode levar a uma falsa sensa??o de seguran?a. é importante verificar se a ferramenta de scan foi configurada corretamente e se houve falhas durante a execu??o. Se necessário, realize uma nova varredura, Além disso, correlacione esses resultados com outras fontes e ferramentas para validar os achados.

I'm not an ITIL expert, but I see this as just one part of cybersecurity issue management: you also have pen test findings, audit findings, self-identified or user-reported issues, etc. All these issues may result in one or more of the following, each of which may be a quick fix or a longer project: * a technical fix (e.g., a patch or configuration change) * a process fix (e.g., an improved system build checklist or a revised user termination process) * a policy update * additional user training * etc. To be more effective at triaging and addressing all of these issues, you should implementing an auditable and repeatable process to ingest multiple issue sources (including vulnerability scanning), triage / prioritize them, and address them.

Good reporting is essential, especially in explaining how the vulnerability can be exploited and its potential impact, including reproduction steps and remediation. We can take it one step further using tools that can automate the actual patch, such as bumping dependencies, which can help reduce the need to discuss whether it is a false positive. Even if the vulnerability can only be exploited by a local privileged user today, tomorrow, we likely will see another vulnerability that will allow an attacker to perform the entire chain. Plea to Developers: when software vendors (including OSS) disclose a vulnerability, we should take their word for it and not argue if it's exploitable. We can discuss that after we have tried patching!

A key takeaway here is that compliance standards (and auditors) can tend to be behind the times when it comes to applying regulatory requirements to security controls like vulnerability scanning. Auditors are used to seeing a scan report that lists a set of IP Addresses or system hostnames and describes the vulnerabilities identified on those systems. They may not even know *how* to ask about how you ensure your Infrastructure as Code components, S3 buckets, RDS databases, and other cloud-native components are being scanned for vulnerabilities and configuration issues.