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xml.go
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xml.go
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package nvd
import (
"fmt"
"strings"
)
type nvd struct {
Entries []nvdEntry `xml:"entry"`
}
type nvdEntry struct {
Name string `xml:"http://scap.nist.gov/schema/vulnerability/0.4 cve-id"`
CVSS nvdCVSS `xml:"http://scap.nist.gov/schema/vulnerability/0.4 cvss"`
}
type nvdCVSS struct {
BaseMetrics nvdCVSSBaseMetrics `xml:"http://scap.nist.gov/schema/cvss-v2/0.2 base_metrics"`
}
type nvdCVSSBaseMetrics struct {
Score float64 `xml:"score"`
AccessVector string `xml:"access-vector"`
AccessComplexity string `xml:"access-complexity"`
Authentication string `xml:"authentication"`
ConfImpact string `xml:"confidentiality-impact"`
IntegImpact string `xml:"integrity-impact"`
AvailImpact string `xml:"avaibility-impact"`
}
var vectorValuesToLetters map[string]string
func init() {
vectorValuesToLetters = make(map[string]string)
vectorValuesToLetters["NETWORK"] = "N"
vectorValuesToLetters["ADJACENT_NETWORK"] = "A"
vectorValuesToLetters["LOCAL"] = "L"
vectorValuesToLetters["HIGH"] = "H"
vectorValuesToLetters["MEDIUM"] = "M"
vectorValuesToLetters["LOW"] = "L"
vectorValuesToLetters["NONE"] = "N"
vectorValuesToLetters["SINGLE_INSTANCE"] = "S"
vectorValuesToLetters["MULTIPLE_INSTANCES"] = "M"
vectorValuesToLetters["PARTIAL"] = "P"
vectorValuesToLetters["COMPLETE"] = "C"
}
func (n nvdEntry) Metadata() *NVDMetadata {
metadata := &NVDMetadata{
CVSSv2: NVDmetadataCVSSv2{
Vectors: n.CVSS.BaseMetrics.String(),
Score: n.CVSS.BaseMetrics.Score,
},
}
if metadata.CVSSv2.Vectors == "" {
return nil
}
return metadata
}
func (n nvdCVSSBaseMetrics) String() string {
var str string
addVec(&str, "AV", n.AccessVector)
addVec(&str, "AC", n.AccessComplexity)
addVec(&str, "Au", n.Authentication)
addVec(&str, "C", n.ConfImpact)
addVec(&str, "I", n.IntegImpact)
addVec(&str, "A", n.AvailImpact)
str = strings.TrimSuffix(str, "/")
return str
}
func addVec(str *string, vec, val string) {
if val != "" {
if let, ok := vectorValuesToLetters[val]; ok {
*str = fmt.Sprintf("%s%s:%s/", *str, vec, let)
} else {
log.Warningf("unknown value '%v' for CVSSv2 vector '%s'", val, vec)
}
}
}