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What is the severity of XSS?
XSS can cause a variety of problems for the end user that range in severity from an annoyance to complete account compromise. The most severe XSS attacks involve disclosure of the user’s session cookie, allowing an attacker to hijack the user’s session and take over the account.
What is an XSS flaw?
Cross-site scripting (XSS) is a type of security vulnerability typically found in web applications. XSS attacks enable attackers to inject client-side scripts into web pages viewed by other users. A cross-site scripting vulnerability may be used by attackers to bypass access controls such as the same-origin policy.
What are two primary types of XSS vulnerabilities Mcq?
What are the two primary classifications of cross-site scripting? non-persistent and persistent.
How does the common vulnerability scoring system ( CVSS ) work?
The Common Vulnerability Scoring System (CVSS) provides a way to capture the principal characteristics of a vulnerability, and produce a numerical score reflecting its severity, as well as a textual representation of that score.
What is the scope of CVSS v3.0?
CVSS v3.0 addresses this issue with updates to where the impact metrics are scored and a new metric called Scope (discussed further below).
How are privileges required and high calculated in CVSS?
Instead of measuring the number of times an attacker must separately authenticate to a system, Privileges Required captures the level of access required for a successful attack. Specifically, the metric values High, Low, and None reflect the privileges required by an attacker in order to exploit the vulnerability.
What is the minimum CVSS score for PCI DSS?
In order to comply with PCI DSS, merchants processing credit cards must demonstrate that none of their computing systems has a vulnerability with a CVSS score greater than or equal to 4.0. In 2007 NIST included CVSS v2.0 as part of their Security Content Automation Protocol (SCAP). [1]