Use version comparison logic when parsing change log (Ubuntu, Debian)
This commit is contained in:
kota kanbe
@@ -18,6 +18,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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package scan
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import (
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"bufio"
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"fmt"
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"regexp"
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"strconv"
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@@ -28,6 +29,8 @@ import (
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"github.com/future-architect/vuls/config"
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"github.com/future-architect/vuls/models"
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"github.com/future-architect/vuls/util"
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"github.com/knqyf263/go-deb-version"
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)
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// inherit OsTypeInterface
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@@ -571,9 +574,6 @@ func (o *debian) scanPackageCveIDs(pack models.Package) ([]DetectedCveID, *model
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return cveIDs, clogFilledPack, nil
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}
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// Debian Version Numbers
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// https://readme.phys.ethz.ch/documentation/debian_version_numbers/
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// TODO Changed to parse and compare versions
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func (o *debian) getCveIDsFromChangelog(
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changelog, name, ver string) ([]DetectedCveID, *models.Package) {
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@@ -636,25 +636,43 @@ func (o *debian) getCveIDsFromChangelog(
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var cveRe = regexp.MustCompile(`(CVE-\d{4}-\d{4,})`)
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// Collect CVE-IDs included in the changelog.
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// The version which specified in argument(versionOrLater) is excluded.
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// The version specified in argument(versionOrLater) is used to compare.
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func (o *debian) parseChangelog(changelog, name, ver string, confidence models.Confidence) ([]DetectedCveID, *models.Package, error) {
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installedVer, err := version.NewVersion(ver)
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if err != nil {
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return nil, nil, fmt.Errorf("Failed to parse installed version: %s, %s", ver, err)
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}
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buf, cveIDs := []string{}, []string{}
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stopRe := regexp.MustCompile(fmt.Sprintf(`\(%s\)`, regexp.QuoteMeta(ver)))
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stopLineFound := false
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lines := strings.Split(changelog, "\n")
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for _, line := range lines {
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scanner := bufio.NewScanner(strings.NewReader(changelog))
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found := false
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for scanner.Scan() {
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line := scanner.Text()
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buf = append(buf, line)
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if match := stopRe.MatchString(line); match {
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// o.log.Debugf("Found the stop line: %s", line)
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stopLineFound = true
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break
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} else if matches := cveRe.FindAllString(line, -1); 0 < len(matches) {
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if matches := cveRe.FindAllString(line, -1); 0 < len(matches) {
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for _, m := range matches {
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cveIDs = util.AppendIfMissing(cveIDs, m)
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}
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}
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ss := strings.Fields(line)
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if len(ss) < 2 {
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continue
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}
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if !strings.HasPrefix(ss[1], "(") || !strings.HasSuffix(ss[1], ")") {
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continue
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}
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clogVer, err := version.NewVersion(ss[1][1 : len(ss[1])-1])
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if err != nil {
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continue
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}
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if installedVer.Equal(clogVer) || installedVer.GreaterThan(clogVer) {
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found = true
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break
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}
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}
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if !stopLineFound {
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if !found {
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pack := o.Packages[name]
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pack.Changelog = models.Changelog{
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Contents: "",
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@@ -666,7 +684,7 @@ func (o *debian) parseChangelog(changelog, name, ver string, confidence models.C
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}
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clog := models.Changelog{
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Contents: strings.Join(buf, "\n"),
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Contents: strings.Join(buf[0:len(buf)-1], "\n"),
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Method: confidence.DetectionMethod,
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}
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pack := o.Packages[name]
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@@ -66,7 +66,7 @@ func TestGetCveIDsFromChangelog(t *testing.T) {
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changelog models.Changelog
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}{
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{
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// verubuntu1
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//0 verubuntu1
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[]string{
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"systemd",
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"228-4ubuntu1",
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@@ -81,9 +81,9 @@ systemd (228-4) unstable; urgency=medium
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systemd (228-3) unstable; urgency=medium`,
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},
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[]DetectedCveID{
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{"CVE-2015-2325", models.ChangelogLenientMatch},
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{"CVE-2015-2326", models.ChangelogLenientMatch},
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{"CVE-2015-3210", models.ChangelogLenientMatch},
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{"CVE-2015-2325", models.ChangelogExactMatch},
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{"CVE-2015-2326", models.ChangelogExactMatch},
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{"CVE-2015-3210", models.ChangelogExactMatch},
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},
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models.Changelog{
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Contents: `systemd (229-2) unstable; urgency=medium
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@@ -92,13 +92,12 @@ systemd (228-6) unstable; urgency=medium
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CVE-2015-2325: heap buffer overflow in compile_branch(). (Closes: #781795)
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CVE-2015-2326: heap buffer overflow in pcre_compile2(). (Closes: #783285)
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CVE-2015-3210: heap buffer overflow in pcre_compile2() /
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systemd (228-5) unstable; urgency=medium
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systemd (228-4) unstable; urgency=medium`,
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Method: models.ChangelogLenientMatchStr,
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systemd (228-5) unstable; urgency=medium`,
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Method: models.ChangelogExactMatchStr,
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},
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},
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{
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// ver
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//1 ver
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[]string{
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"libpcre3",
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"2:8.35-7.1ubuntu1",
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@@ -115,9 +114,9 @@ systemd (228-4) unstable; urgency=medium`,
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pcre3 (2:8.35-7) unstable; urgency=medium`,
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},
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[]DetectedCveID{
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{"CVE-2015-2325", models.ChangelogLenientMatch},
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{"CVE-2015-2326", models.ChangelogLenientMatch},
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{"CVE-2015-3210", models.ChangelogLenientMatch},
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{"CVE-2015-2325", models.ChangelogExactMatch},
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{"CVE-2015-2326", models.ChangelogExactMatch},
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{"CVE-2015-3210", models.ChangelogExactMatch},
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},
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models.Changelog{
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Contents: `pcre3 (2:8.38-2) unstable; urgency=low
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@@ -128,13 +127,12 @@ systemd (228-4) unstable; urgency=medium`,
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pcre3 (2:8.35-7.2) unstable; urgency=low
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CVE-2015-2325: heap buffer overflow in compile_branch(). (Closes: #781795)
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CVE-2015-2326: heap buffer overflow in pcre_compile2(). (Closes: #783285)
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CVE-2015-3210: heap buffer overflow in pcre_compile2() /
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pcre3 (2:8.35-7.1) unstable; urgency=medium`,
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Method: models.ChangelogLenientMatchStr,
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CVE-2015-3210: heap buffer overflow in pcre_compile2() /`,
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Method: models.ChangelogExactMatchStr,
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},
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},
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{
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// ver-ubuntu3
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//2 ver-ubuntu3
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[]string{
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"sysvinit",
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"2.88dsf-59.2ubuntu3",
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@@ -168,13 +166,12 @@ systemd (228-4) unstable; urgency=medium`,
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sysvinit (2.88dsf-59.3) unstable; urgency=medium
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CVE-2015-2325: heap buffer overflow in compile_branch(). (Closes: #781795)
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CVE-2015-2326: heap buffer overflow in pcre_compile2(). (Closes: #783285)
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CVE-2015-3210: heap buffer overflow in pcre_compile2() /
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sysvinit (2.88dsf-59.2ubuntu3) xenial; urgency=medium`,
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CVE-2015-3210: heap buffer overflow in pcre_compile2() /`,
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Method: models.ChangelogExactMatchStr,
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},
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},
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{
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// 1:ver-ubuntu3
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//3 1:ver-ubuntu3
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[]string{
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"bsdutils",
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"1:2.27.1-1ubuntu3",
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@@ -192,25 +189,25 @@ systemd (228-4) unstable; urgency=medium`,
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util-linux (2.27-3ubuntu1) xenial; urgency=medium`,
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},
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[]DetectedCveID{
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{"CVE-2015-2325", models.ChangelogLenientMatch},
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{"CVE-2015-2326", models.ChangelogLenientMatch},
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{"CVE-2015-3210", models.ChangelogLenientMatch},
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{"CVE-2016-1000000", models.ChangelogLenientMatch},
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// {"CVE-2015-2325", models.ChangelogLenientMatch},
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// {"CVE-2015-2326", models.ChangelogLenientMatch},
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// {"CVE-2015-3210", models.ChangelogLenientMatch},
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// {"CVE-2016-1000000", models.ChangelogLenientMatch},
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},
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models.Changelog{
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Contents: `util-linux (2.27.1-3ubuntu1) xenial; urgency=medium
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util-linux (2.27.1-3) unstable; urgency=medium
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CVE-2015-2325: heap buffer overflow in compile_branch(). (Closes: #781795)
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CVE-2015-2326: heap buffer overflow in pcre_compile2(). (Closes: #783285)
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CVE-2015-3210: CVE-2016-1000000heap buffer overflow in pcre_compile2() /
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util-linux (2.27.1-2) unstable; urgency=medium
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util-linux (2.27.1-1ubuntu4) xenial; urgency=medium
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util-linux (2.27.1-1ubuntu3) xenial; urgency=medium`,
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Method: models.ChangelogLenientMatchStr,
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// Contents: `util-linux (2.27.1-3ubuntu1) xenial; urgency=medium
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// util-linux (2.27.1-3) unstable; urgency=medium
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// CVE-2015-2325: heap buffer overflow in compile_branch(). (Closes: #781795)
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// CVE-2015-2326: heap buffer overflow in pcre_compile2(). (Closes: #783285)
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// CVE-2015-3210: CVE-2016-1000000heap buffer overflow in pcre_compile2() /
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// util-linux (2.27.1-2) unstable; urgency=medium
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// util-linux (2.27.1-1ubuntu4) xenial; urgency=medium
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// util-linux (2.27.1-1ubuntu3) xenial; urgency=medium`,
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Method: models.ChangelogExactMatchStr,
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},
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},
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{
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// 1:ver-ubuntu3
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//4 1:ver-ubuntu3
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[]string{
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"bsdutils",
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"1:2.27-3ubuntu3",
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@@ -228,29 +225,28 @@ systemd (228-4) unstable; urgency=medium`,
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util-linux (2.27-3) xenial; urgency=medium`,
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},
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[]DetectedCveID{
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{"CVE-2015-2325", models.ChangelogLenientMatch},
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{"CVE-2015-2326", models.ChangelogLenientMatch},
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{"CVE-2015-3210", models.ChangelogLenientMatch},
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{"CVE-2016-1000000", models.ChangelogLenientMatch},
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// {"CVE-2015-2325", models.ChangelogLenientMatch},
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// {"CVE-2015-2326", models.ChangelogLenientMatch},
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// {"CVE-2015-3210", models.ChangelogLenientMatch},
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// {"CVE-2016-1000000", models.ChangelogLenientMatch},
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},
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models.Changelog{
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Contents: `util-linux (2.27.1-3ubuntu1) xenial; urgency=medium
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util-linux (2.27.1-3) unstable; urgency=medium
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CVE-2015-2325: heap buffer overflow in compile_branch(). (Closes: #781795)
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CVE-2015-2326: heap buffer overflow in pcre_compile2(). (Closes: #783285)
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CVE-2015-3210: CVE-2016-1000000heap buffer overflow in pcre_compile2() /
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util-linux (2.27.1-2) unstable; urgency=medium
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util-linux (2.27.1-1ubuntu4) xenial; urgency=medium
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util-linux (2.27.1-1ubuntu3) xenial; urgency=medium
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util-linux (2.27.1-1ubuntu2) xenial; urgency=medium
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util-linux (2.27.1-1ubuntu1) xenial; urgency=medium
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util-linux (2.27.1-1) unstable; urgency=medium
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util-linux (2.27-3) xenial; urgency=medium`,
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Method: models.ChangelogLenientMatchStr,
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// Contents: `util-linux (2.27.1-3ubuntu1) xenial; urgency=medium
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// util-linux (2.27.1-3) unstable; urgency=medium
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// CVE-2015-2325: heap buffer overflow in compile_branch(). (Closes: #781795)
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// CVE-2015-2326: heap buffer overflow in pcre_compile2(). (Closes: #783285)
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// CVE-2015-3210: CVE-2016-1000000heap buffer overflow in pcre_compile2() /
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// util-linux (2.27.1-2) unstable; urgency=medium
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// util-linux (2.27.1-1ubuntu4) xenial; urgency=medium
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// util-linux (2.27.1-1ubuntu3) xenial; urgency=medium
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// util-linux (2.27.1-1ubuntu2) xenial; urgency=medium
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// util-linux (2.27.1-1ubuntu1) xenial; urgency=medium
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// util-linux (2.27.1-1) unstable; urgency=medium`,
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Method: models.ChangelogExactMatchStr,
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},
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},
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{
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// https://github.com/future-architect/vuls/pull/350
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//5 https://github.com/future-architect/vuls/pull/350
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[]string{
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"tar",
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"1.27.1-2+b1",
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@@ -259,13 +255,12 @@ systemd (228-4) unstable; urgency=medium`,
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tar (1.27.1-2) unstable; urgency=low`,
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},
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[]DetectedCveID{
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{"CVE-2016-6321", models.ChangelogLenientMatch},
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{"CVE-2016-6321", models.ChangelogExactMatch},
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},
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models.Changelog{
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Contents: `tar (1.27.1-2+deb8u1) jessie-security; urgency=high
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* CVE-2016-6321: Bypassing the extract path name.
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tar (1.27.1-2) unstable; urgency=low`,
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Method: models.ChangelogLenientMatchStr,
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* CVE-2016-6321: Bypassing the extract path name.`,
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Method: models.ChangelogExactMatchStr,
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},
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},
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}
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@@ -286,11 +281,11 @@ systemd (228-4) unstable; urgency=medium`,
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}
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if aPack.Changelog.Contents != tt.changelog.Contents {
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t.Errorf(pp.Sprintf("expected: %s, actual: %s", tt.changelog.Contents, aPack.Changelog.Contents))
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t.Error(pp.Sprintf("[%d] expected: %s, actual: %s", i, tt.changelog.Contents, aPack.Changelog.Contents))
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}
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if aPack.Changelog.Method != tt.changelog.Method {
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t.Errorf(pp.Sprintf("expected: %s, actual: %s", tt.changelog.Method, aPack.Changelog.Method))
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t.Error(pp.Sprintf("[%d] expected: %s, actual: %s", i, tt.changelog.Method, aPack.Changelog.Method))
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}
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}
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}
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Reference in New Issue
Block a user