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Subject: [OASIS Issue Tracker] (CSAF-28) Proposal for CVSS future embrace


     [ https://issues.oasis-open.org/browse/CSAF-28?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Omar Santos updated CSAF-28:
----------------------------
    Fix Version/s: 1.2_CSD01_WD01
         Assignee: Omar Santos

> Proposal for CVSS future embrace
> --------------------------------
>
>                 Key: CSAF-28
>                 URL: https://issues.oasis-open.org/browse/CSAF-28
>             Project: OASIS Common Security Advisory Framework (CSAF) TC
>          Issue Type: Improvement
>         Environment: [Proposed]
>            Reporter: Stefan Hagen
>            Assignee: Omar Santos
>            Priority: Critical
>             Fix For: 1.2_CSD01_WD01
>
>
> Originally proposed in a mail to the TC list (archived for public access at https://lists.oasis-open.org/archives/csaf/201704/msg00040.html ):
> Better represent the transitive task of embedding and relating CVSS information of various versions. 
> Ideally the CVSS elements are valid CVSS "documents" themselves, but having read through many real world CVRF v1.1 documents they are (often understandably so) not.
> Either CVSS v3 content is tunneld throught the CVRF v1.1 ScoreSet element (which suits a CVSS v2 content model) and this version info is noted out of band (say in some web page of publisher domain or the CVSS v3 vector is stored without the fixed prefix (required by CVSS v3) to safe space in the length constraint of the CVRF v1.1 Vector element.
> To a) mitigate the current discussion on the cardinalities of elements for storage of CVSS v2 and v3 content and b) avoid clumsy model names and c) be future proof to a reasonable extent without introducing an xs:any black hole a version attributed superset ScoreSet element is suggested.
> Please note, that currently the per CVSSv3 required fixed prefix for vectors is not always 
> used "in the wild" (and understandably so, as our cvrf v1.1 length might forbid legitimate values in CVSS v3.
> So a Version attribute on a single ScoreSet element instance might be an enhancement for existing documents
> when being transformed (see the Oracle example, where the CVSS3.0 prefix would now be signalled
> via the Version attribute value "3".
> Any feedback greatly appreciated esp. practical problems not known to me in my tower of thought 



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