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: 7ce34ce58f83bc02fa2c04bec54e358e8614157e)

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>
(cherry picked from commit 358dbfcd80ae1fa414d294c865dd293670c287f0)
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/classes/cve-check.bbclass

@@ -31,7 +31,7 @@
 CVE_PRODUCT ??= "${BPN}"
 CVE_VERSION ??= "${PV}"
 
-CVE_CHECK_DB_FILENAME ?= "nvdcve_2-1.db"
+CVE_CHECK_DB_FILENAME ?= "nvdcve_2-2.db"
 CVE_CHECK_DB_DIR ?= "${STAGING_DIR}/CVE_CHECK"
 CVE_CHECK_DB_FILE ?= "${CVE_CHECK_DB_DIR}/${CVE_CHECK_DB_FILENAME}"
 CVE_CHECK_DB_FILE_LOCK ?= "${CVE_CHECK_DB_FILE}.lock"
@@ -445,9 +445,10 @@ def get_cve_info(d, cve_data):
             cve_data[row[0]]["NVD-summary"] = row[1]
             cve_data[row[0]]["NVD-scorev2"] = row[2]
             cve_data[row[0]]["NVD-scorev3"] = row[3]
-            cve_data[row[0]]["NVD-modified"] = row[4]
-            cve_data[row[0]]["NVD-vector"] = row[5]
-            cve_data[row[0]]["NVD-vectorString"] = row[6]
+            cve_data[row[0]]["NVD-scorev4"] = row[4]
+            cve_data[row[0]]["NVD-modified"] = row[5]
+            cve_data[row[0]]["NVD-vector"] = row[6]
+            cve_data[row[0]]["NVD-vectorString"] = row[7]
         cursor.close()
     conn.close()
 
@@ -534,6 +535,7 @@ def cve_write_data_json(d, cve_data, cve_status):
             cve_item["summary"] = cve_data[cve]["NVD-summary"]
             cve_item["scorev2"] = cve_data[cve]["NVD-scorev2"]
             cve_item["scorev3"] = cve_data[cve]["NVD-scorev3"]
+            cve_item["scorev4"] = cve_data[cve]["NVD-scorev4"]
             cve_item["modified"] = cve_data[cve]["NVD-modified"]
             cve_item["vector"] = cve_data[cve]["NVD-vector"]
             cve_item["vectorString"] = cve_data[cve]["NVD-vectorString"]

meta/classes/vex.bbclass

@@ -282,6 +282,7 @@ def cve_write_data_json(d, cve_data, cve_status):
             cve_item["summary"] = cve_data[cve]["NVD-summary"]
             cve_item["scorev2"] = cve_data[cve]["NVD-scorev2"]
             cve_item["scorev3"] = cve_data[cve]["NVD-scorev3"]
+            cve_item["scorev4"] = cve_data[cve]["NVD-scorev4"]
             cve_item["vector"] = cve_data[cve]["NVD-vector"]
             cve_item["vectorString"] = cve_data[cve]["NVD-vectorString"]
         if 'status' in cve_data[cve]:

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

@@ -255,7 +255,7 @@ 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, \
@@ -361,12 +361,18 @@ 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

scripts/cve-json-to-text.py

@@ -125,6 +125,8 @@ def process_data(filename, data):
                 lines += "CVSS v2 BASE SCORE: %s\n" % issue["scorev2"]
             if "scorev3" in issue:
                 lines += "CVSS v3 BASE SCORE: %s\n" % issue["scorev3"]
+            if "scorev4" in issue:
+                lines += "CVSS v4 BASE SCORE: %s\n" % issue["scorev4"]
             if "vector" in issue:
                 lines += "VECTOR: %s\n" % issue["vector"]
             if "vectorString" in issue: