Forum Thread: "Less critical" rating question

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ethanalexlee "Less critical" rating question
Member 7th Nov, 2010 04:36
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Last edited on 7th Nov, 2010 04:39

Does anyone know why secunia rates cross-site scripting vulnerabilities in general as "less critical". what is the rationale? I would have thought these are serious flaws. Any ideas? Thank you.

as quoted from their Terminology glossary:

Less Critical (2 of 5)Criticality Level 2
Typically used for cross-site scripting vulnerabilities and privilege escalation vulnerabilities.

This rating is also used for vulnerabilities allowing exposure of sensitive data to local users.

Cross-Site Scripting
Cross-Site Scripting vulnerabilities allow a third party to manipulate the content or behaviour of a web application in a user's browser, without compromising the underlying system.

Different Cross-Site Scripting related vulnerabilities are also classified under this category, including "script insertion" and "cross-site request forgery".

Cross-Site Scripting vulnerabilities are often used against specific users of a website to steal their credentials or to conduct spoofing attacks.

ddmarshall RE: "Less critical" rating question
Dedicated Contributor 7th Nov, 2010 18:33
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The key phrase is 'without compromising the underlying system'. The more critical ratings mostly relate to malicious code being installed on the system.

An XSS vulnerability requires user interaction in browsing to a vulnerable site. Data theft is restricted to that which is stored by the compromised site.

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