public static CvssV3BaseScore FromVectorString(string vectorString)
{
vectorString = vectorString ?? throw new ArgumentNullException(nameof(vectorString));
if (string.IsNullOrWhiteSpace(vectorString) ||
!Regex.IsMatch(vectorString, "^CVSS:3\\.0\\/((AV:[NALP]|AC:[LH]|PR:[UNLH]|UI:[NR]|S:[UC]|[CIA]:[NLH]|E:[XUPFH]|RL:[XOTWU]|RC:[XURC]|[CIA]R:[XLMH]|MAV:[XNALP]|MAC:[XLH]|MPR:[XUNLH]|MUI:[XNR]|MS:[XUC]|M[CIA]:[XNLH])\\/)*(AV:[NALP]|AC:[LH]|PR:[UNLH]|UI:[NR]|S:[UC]|[CIA]:[NLH]|E:[XUPFH]|RL:[XOTWU]|RC:[XURC]|[CIA]R:[XLMH]|MAV:[XNALP]|MAC:[XLH]|MPR:[XUNLH]|MUI:[XNR]|MS:[XUC]|M[CIA]:[XNLH])$"))
{
throw new ArgumentException("Not a valid CVSS V3 vector string, invalid format", nameof(vectorString));
}
var cvssV3BaseScore = new CvssV3BaseScore
{
AttackVector = VectorStringParser <CvssV3Enums.AttackVector> .Parse(vectorString),
AttackComplexity = VectorStringParser <CvssV3Enums.AttackComplexity> .Parse(vectorString),
PrivilegesRequired = VectorStringParser <CvssV3Enums.PrivilegesRequired> .Parse(vectorString),
UserInteraction = VectorStringParser <CvssV3Enums.UserInteraction> .Parse(vectorString),
Scope = VectorStringParser <CvssV3Enums.Scope> .Parse(vectorString),
Confidentiality = VectorStringParser <CvssV3Enums.Confidentiality> .Parse(vectorString),
Integrity = VectorStringParser <CvssV3Enums.Integrity> .Parse(vectorString),
Availability = VectorStringParser <CvssV3Enums.Availability> .Parse(vectorString),
};
var hasAllRequiredValues = true;
hasAllRequiredValues = hasAllRequiredValues && cvssV3BaseScore.AttackVector != CvssV3Enums.AttackVector.NotSpecified;
hasAllRequiredValues = hasAllRequiredValues && cvssV3BaseScore.AttackComplexity != CvssV3Enums.AttackComplexity.NotSpecified;
hasAllRequiredValues = hasAllRequiredValues && cvssV3BaseScore.PrivilegesRequired != CvssV3Enums.PrivilegesRequired.NotSpecified;
hasAllRequiredValues = hasAllRequiredValues && cvssV3BaseScore.UserInteraction != CvssV3Enums.UserInteraction.NotSpecified;
hasAllRequiredValues = hasAllRequiredValues && cvssV3BaseScore.Scope != CvssV3Enums.Scope.NotSpecified;
hasAllRequiredValues = hasAllRequiredValues && cvssV3BaseScore.Confidentiality != CvssV3Enums.Confidentiality.NotSpecified;
hasAllRequiredValues = hasAllRequiredValues && cvssV3BaseScore.Integrity != CvssV3Enums.Integrity.NotSpecified;
hasAllRequiredValues = hasAllRequiredValues && cvssV3BaseScore.Availability != CvssV3Enums.Availability.NotSpecified;
if (!hasAllRequiredValues)
{
throw new ArgumentException("Not a valid CVSS V3 vector string, missing required metric", nameof(vectorString));
}
return(cvssV3BaseScore);
}
public static CvssV3BaseScore FromCvssV2BaseScore(CvssV2BaseScore cvssV2BaseScore)
{
var cvssV3BaseScore = new CvssV3BaseScore();
switch (cvssV2BaseScore.AccessVector)
{
case CvssV2Enums.AccessVector.Network:
cvssV3BaseScore.AttackVector = CvssV3Enums.AttackVector.Network;
break;
case CvssV2Enums.AccessVector.AdjacentNetwork:
cvssV3BaseScore.AttackVector = CvssV3Enums.AttackVector.Adjacent;
break;
}
switch (cvssV2BaseScore.Authentication)
{
case CvssV2Enums.Authentication.None:
cvssV3BaseScore.PrivilegesRequired = CvssV3Enums.PrivilegesRequired.None;
break;
}
switch (cvssV2BaseScore.ConfidentialityImpact)
{
case CvssV2Enums.ConfidentialityImpact.Complete:
cvssV3BaseScore.Confidentiality = CvssV3Enums.Confidentiality.High;
break;
case CvssV2Enums.ConfidentialityImpact.Partial:
cvssV3BaseScore.Confidentiality = CvssV3Enums.Confidentiality.Low;
break;
case CvssV2Enums.ConfidentialityImpact.None:
cvssV3BaseScore.Confidentiality = CvssV3Enums.Confidentiality.None;
break;
}
switch (cvssV2BaseScore.IntegrityImpact)
{
case CvssV2Enums.IntegrityImpact.Complete:
cvssV3BaseScore.Integrity = CvssV3Enums.Integrity.High;
break;
case CvssV2Enums.IntegrityImpact.Partial:
cvssV3BaseScore.Integrity = CvssV3Enums.Integrity.Low;
break;
case CvssV2Enums.IntegrityImpact.None:
cvssV3BaseScore.Integrity = CvssV3Enums.Integrity.None;
break;
}
switch (cvssV2BaseScore.AvailabilityImpact)
{
case CvssV2Enums.AvailabilityImpact.Complete:
cvssV3BaseScore.Availability = CvssV3Enums.Availability.High;
break;
case CvssV2Enums.AvailabilityImpact.Partial:
cvssV3BaseScore.Availability = CvssV3Enums.Availability.Low;
break;
case CvssV2Enums.AvailabilityImpact.None:
cvssV3BaseScore.Availability = CvssV3Enums.Availability.None;
break;
}
return(cvssV3BaseScore);
}
public CvssV3Score()
{
BaseScore = new CvssV3BaseScore();
TemporalScore = new CvssV3TemporalScore();
EnvironmentalScore = new CvssV3EnvironmentalScore();
}
