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/* Vuls - Vulnerability Scanner
Copyright (C) 2016 Future Architect, Inc. Japan.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package gost
import (
"encoding/json"
"github.com/future-architect/vuls/config"
"github.com/future-architect/vuls/models"
"github.com/future-architect/vuls/util"
"github.com/knqyf263/gost/db"
gostmodels "github.com/knqyf263/gost/models"
)
// Debian is Gost client for Debian GNU/Linux
type Debian struct {
Base
}
type packCves struct {
packName string
isSrcPack bool
cves []models.CveContent
}
// FillWithGost fills cve information that has in Gost
func (deb Debian) FillWithGost(driver db.DB, r *models.ScanResult) (nCVEs int, err error) {
linuxImage := "linux-image-" + r.RunningKernel.Release
// Add linux and set the version of running kernel to search OVAL.
if r.Container.ContainerID == "" {
newVer := ""
if p, ok := r.Packages[linuxImage]; ok {
newVer = p.NewVersion
}
r.Packages["linux"] = models.Package{
Name: "linux",
Version: r.RunningKernel.Version,
NewVersion: newVer,
}
}
packCvesList := []packCves{}
if config.Conf.Gost.IsFetchViaHTTP() {
url, _ := util.URLPathJoin(config.Conf.Gost.URL, "debian", major(r.Release), "pkgs")
responses, err := getAllUnfixedCvesViaHTTP(r, url)
if err != nil {
return 0, err
}
for _, res := range responses {
debCves := map[string]gostmodels.DebianCVE{}
if err := json.Unmarshal([]byte(res.json), &debCves); err != nil {
return 0, err
}
cves := []models.CveContent{}
for _, debcve := range debCves {
cves = append(cves, *deb.ConvertToModel(&debcve))
}
packCvesList = append(packCvesList, packCves{
packName: res.request.packName,
isSrcPack: res.request.isSrcPack,
cves: cves,
})
}
} else {
if driver == nil {
return 0, nil
}
for _, pack := range r.Packages {
cveDebs := driver.GetUnfixedCvesDebian(major(r.Release), pack.Name)
cves := []models.CveContent{}
for _, cveDeb := range cveDebs {
cves = append(cves, *deb.ConvertToModel(&cveDeb))
}
packCvesList = append(packCvesList, packCves{
packName: pack.Name,
isSrcPack: false,
cves: cves,
})
}
// SrcPack
for _, pack := range r.SrcPackages {
cveDebs := driver.GetUnfixedCvesDebian(major(r.Release), pack.Name)
cves := []models.CveContent{}
for _, cveDeb := range cveDebs {
cves = append(cves, *deb.ConvertToModel(&cveDeb))
}
packCvesList = append(packCvesList, packCves{
packName: pack.Name,
isSrcPack: true,
cves: cves,
})
}
}
delete(r.Packages, "linux")
for _, p := range packCvesList {
for _, cve := range p.cves {
v, ok := r.ScannedCves[cve.CveID]
if ok {
if v.CveContents == nil {
v.CveContents = models.NewCveContents(cve)
} else {
v.CveContents[models.DebianSecurityTracker] = cve
}
} else {
v = models.VulnInfo{
CveID: cve.CveID,
CveContents: models.NewCveContents(cve),
Confidences: models.Confidences{models.DebianSecurityTrackerMatch},
}
nCVEs++
}
names := []string{}
if p.isSrcPack {
if srcPack, ok := r.SrcPackages[p.packName]; ok {
for _, binName := range srcPack.BinaryNames {
if _, ok := r.Packages[binName]; ok {
names = append(names, binName)
}
}
}
} else {
if p.packName == "linux" {
names = append(names, linuxImage)
} else {
names = append(names, p.packName)
}
}
for _, name := range names {
v.AffectedPackages = v.AffectedPackages.Store(models.PackageFixStatus{
Name: name,
FixState: "open",
NotFixedYet: true,
})
}
r.ScannedCves[cve.CveID] = v
}
}
return nCVEs, nil
}
// ConvertToModel converts gost model to vuls model
func (deb Debian) ConvertToModel(cve *gostmodels.DebianCVE) *models.CveContent {
severity := ""
for _, p := range cve.Package {
for _, r := range p.Release {
severity = r.Urgency
break
}
}
return &models.CveContent{
Type: models.DebianSecurityTracker,
CveID: cve.CveID,
Summary: cve.Description,
Cvss2Severity: severity,
Cvss3Severity: severity,
SourceLink: "https://security-tracker.debian.org/tracker/" + cve.CveID,
Optional: map[string]string{
"attack range": cve.Scope,
},
}
}
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