cve-check: add support for cvss v4.0

https://nvd.nist.gov/general/news/cvss-v4-0-official-support

CVSS v4.0 was released in November 2023
NVD announced support for it in June 2024

Current stats are:
* cvss v4 provided, but also v3, so cve-check showed a value
sqlite> select count(*) from nvd where scorev4 != 0.0 and scorev3 != 0.0;
2069
* only cvss v4 provided, so cve-check did not show any
sqlite> select count(*) from nvd where scorev4 != 0.0 and scorev3 = 0.0;
260

(From OE-Core rev: 358dbfcd80ae1fa414d294c865dd293670c287f0)

(From OE-Core rev: 290407b3785bce2d22212a7ab9d3a349c8935cc0)

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/classes/cve-check.bbclass

@@ -32,7 +32,7 @@ CVE_PRODUCT ??= "${BPN}"
 CVE_VERSION ??= "${PV}"
 
 CVE_CHECK_DB_DIR ?= "${DL_DIR}/CVE_CHECK"
-CVE_CHECK_DB_FILE ?= "${CVE_CHECK_DB_DIR}/nvdcve_2-1.db"
+CVE_CHECK_DB_FILE ?= "${CVE_CHECK_DB_DIR}/nvdcve_2-2.db"
 CVE_CHECK_DB_FILE_LOCK ?= "${CVE_CHECK_DB_FILE}.lock"
 
 CVE_CHECK_LOG ?= "${T}/cve.log"
@@ -447,9 +447,10 @@ def get_cve_info(d, cves):
             cve_data[row[0]]["summary"] = row[1]
             cve_data[row[0]]["scorev2"] = row[2]
             cve_data[row[0]]["scorev3"] = row[3]
-            cve_data[row[0]]["modified"] = row[4]
-            cve_data[row[0]]["vector"] = row[5]
-            cve_data[row[0]]["vectorString"] = row[6]
+            cve_data[row[0]]["scorev4"] = row[4]
+            cve_data[row[0]]["modified"] = row[5]
+            cve_data[row[0]]["vector"] = row[6]
+            cve_data[row[0]]["vectorString"] = row[7]
         cursor.close()
     conn.close()
     return cve_data
@@ -514,6 +515,7 @@ def cve_write_data_text(d, patched, unpatched, ignored, cve_data):
         write_string += "CVE SUMMARY: %s\n" % cve_data[cve]["summary"]
         write_string += "CVSS v2 BASE SCORE: %s\n" % cve_data[cve]["scorev2"]
         write_string += "CVSS v3 BASE SCORE: %s\n" % cve_data[cve]["scorev3"]
+        write_string += "CVSS v4 BASE SCORE: %s\n" % cve_data[cve]["scorev4"]
         write_string += "VECTOR: %s\n" % cve_data[cve]["vector"]
         write_string += "VECTORSTRING: %s\n" % cve_data[cve]["vectorString"]
         write_string += "MORE INFORMATION: %s%s\n\n" % (nvd_link, cve)
@@ -631,6 +633,7 @@ def cve_write_data_json(d, patched, unpatched, ignored, cve_data, cve_status):
             "summary" : cve_data[cve]["summary"],
             "scorev2" : cve_data[cve]["scorev2"],
             "scorev3" : cve_data[cve]["scorev3"],
+            "scorev4" : cve_data[cve]["scorev4"],
             "vector" : cve_data[cve]["vector"],
             "vectorString" : cve_data[cve]["vectorString"],
             "status" : status,

meta/recipes-core/meta/cve-update-nvd2-native.bb

@@ -247,7 +247,7 @@ def initialize_db(conn):
         c.execute("CREATE TABLE IF NOT EXISTS META (YEAR INTEGER UNIQUE, DATE TEXT)")
 
         c.execute("CREATE TABLE IF NOT EXISTS NVD (ID TEXT UNIQUE, SUMMARY TEXT, \
-            SCOREV2 TEXT, SCOREV3 TEXT, MODIFIED INTEGER, VECTOR TEXT, VECTORSTRING TEXT)")
+            SCOREV2 TEXT, SCOREV3 TEXT, SCOREV4 TEXT, MODIFIED INTEGER, VECTOR TEXT, VECTORSTRING TEXT)")
 
         c.execute("CREATE TABLE IF NOT EXISTS PRODUCTS (ID TEXT, \
             VENDOR TEXT, PRODUCT TEXT, VERSION_START TEXT, OPERATOR_START TEXT, \
@@ -353,12 +353,18 @@ def update_db(conn, elt):
         cvssv3 = cvssv3 or elt['cve']['metrics']['cvssMetricV31'][0]['cvssData']['baseScore']
     except KeyError:
         pass
+    cvssv3 = cvssv3 or 0.0
+    try:
+        accessVector = accessVector or elt['cve']['metrics']['cvssMetricV40'][0]['cvssData']['attackVector']
+        vectorString = vectorString or elt['cve']['metrics']['cvssMetricV40'][0]['cvssData']['vectorString']
+        cvssv4 = elt['cve']['metrics']['cvssMetricV40'][0]['cvssData']['baseScore']
+    except KeyError:
+        cvssv4 = 0.0
     accessVector = accessVector or "UNKNOWN"
     vectorString = vectorString or "UNKNOWN"
-    cvssv3 = cvssv3 or 0.0
 
-    conn.execute("insert or replace into NVD values (?, ?, ?, ?, ?, ?, ?)",
-                [cveId, cveDesc, cvssv2, cvssv3, date, accessVector, vectorString]).close()
+    conn.execute("insert or replace into NVD values (?, ?, ?, ?, ?, ?, ?, ?)",
+                [cveId, cveDesc, cvssv2, cvssv3, cvssv4, date, accessVector, vectorString]).close()
 
     try:
         # Remove any pre-existing CVE configuration. Even for partial database