new file mode 100644
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+SUMMARY = "Updates the NVD CVE database"
+LICENSE = "MIT"
+
+INHIBIT_DEFAULT_DEPS = "1"
+
+inherit native
+
+deltask do_unpack
+deltask do_patch
+deltask do_configure
+deltask do_compile
+deltask do_install
+deltask do_populate_sysroot
+
+NVDCVE_URL ?= "https://nvd.nist.gov/feeds/json/cve/1.1/nvdcve-1.1-"
+# CVE database update interval, in seconds. By default: once a day (24*60*60).
+# Use 0 to force the update
+# Use a negative value to skip the update
+CVE_DB_UPDATE_INTERVAL ?= "86400"
+
+# Timeout for blocking socket operations, such as the connection attempt.
+CVE_SOCKET_TIMEOUT ?= "60"
+
+CVE_DB_TEMP_FILE ?= "${CVE_CHECK_DB_DIR}/temp_nvdcve_1.1.db"
+
+python () {
+ if not bb.data.inherits_class("cve-check", d):
+ raise bb.parse.SkipRecipe("Skip recipe when cve-check class is not loaded.")
+}
+
+python do_fetch() {
+ """
+ Update NVD database with json data feed
+ """
+ import bb.utils
+ import bb.progress
+ import shutil
+
+ bb.utils.export_proxies(d)
+
+ db_file = d.getVar("CVE_CHECK_DB_FILE")
+ db_dir = os.path.dirname(db_file)
+ db_tmp_file = d.getVar("CVE_DB_TEMP_FILE")
+
+ cleanup_db_download(db_file, db_tmp_file)
+
+ # The NVD database changes once a day, so no need to update more frequently
+ # Allow the user to force-update
+ try:
+ import time
+ update_interval = int(d.getVar("CVE_DB_UPDATE_INTERVAL"))
+ if update_interval < 0:
+ bb.note("CVE database update skipped")
+ return
+ if time.time() - os.path.getmtime(db_file) < update_interval:
+ bb.debug(2, "Recently updated, skipping")
+ return
+
+ except OSError:
+ pass
+
+ bb.utils.mkdirhier(db_dir)
+ if os.path.exists(db_file):
+ shutil.copy2(db_file, db_tmp_file)
+
+ if update_db_file(db_tmp_file, d) == True:
+ # Update downloaded correctly, can swap files
+ shutil.move(db_tmp_file, db_file)
+ else:
+ # Update failed, do not modify the database
+ bb.note("CVE database update failed")
+ os.remove(db_tmp_file)
+}
+
+do_fetch[lockfiles] += "${CVE_CHECK_DB_FILE_LOCK}"
+do_fetch[file-checksums] = ""
+do_fetch[vardeps] = ""
+
+def cleanup_db_download(db_file, db_tmp_file):
+ """
+ Cleanup the download space from possible failed downloads
+ """
+
+ # Clean up the updates done on the main file
+ # Remove it only if a journal file exists - it means a complete re-download
+ if os.path.exists("{0}-journal".format(db_file)):
+ # If a journal is present the last update might have been interrupted. In that case,
+ # just wipe any leftovers and force the DB to be recreated.
+ os.remove("{0}-journal".format(db_file))
+
+ if os.path.exists(db_file):
+ os.remove(db_file)
+
+ # Clean-up the temporary file downloads, we can remove both journal
+ # and the temporary database
+ if os.path.exists("{0}-journal".format(db_tmp_file)):
+ # If a journal is present the last update might have been interrupted. In that case,
+ # just wipe any leftovers and force the DB to be recreated.
+ os.remove("{0}-journal".format(db_tmp_file))
+
+ if os.path.exists(db_tmp_file):
+ os.remove(db_tmp_file)
+
+def update_db_file(db_tmp_file, d):
+ """
+ Update the given database file
+ """
+ import bb.utils, bb.progress
+ from datetime import date
+ import urllib, gzip, sqlite3
+
+ YEAR_START = 2002
+ cve_socket_timeout = int(d.getVar("CVE_SOCKET_TIMEOUT"))
+
+ # Connect to database
+ conn = sqlite3.connect(db_tmp_file)
+ initialize_db(conn)
+
+ with bb.progress.ProgressHandler(d) as ph, open(os.path.join(d.getVar("TMPDIR"), 'cve_check'), 'a') as cve_f:
+ total_years = date.today().year + 1 - YEAR_START
+ for i, year in enumerate(range(YEAR_START, date.today().year + 1)):
+ bb.debug(2, "Updating %d" % year)
+ ph.update((float(i + 1) / total_years) * 100)
+ year_url = (d.getVar('NVDCVE_URL')) + str(year)
+ meta_url = year_url + ".meta"
+ json_url = year_url + ".json.gz"
+
+ # Retrieve meta last modified date
+ try:
+ response = urllib.request.urlopen(meta_url, timeout=cve_socket_timeout)
+ except urllib.error.URLError as e:
+ cve_f.write('Warning: CVE db update error, Unable to fetch CVE data.\n\n')
+ bb.warn("Failed to fetch CVE data (%s)" % e)
+ import socket
+ result = socket.getaddrinfo("nvd.nist.gov", 443, proto=socket.IPPROTO_TCP)
+ bb.warn("Host IPs are %s" % (", ".join(t[4][0] for t in result)))
+ return False
+
+ if response:
+ for l in response.read().decode("utf-8").splitlines():
+ key, value = l.split(":", 1)
+ if key == "lastModifiedDate":
+ last_modified = value
+ break
+ else:
+ bb.warn("Cannot parse CVE metadata, update failed")
+ return False
+
+ # Compare with current db last modified date
+ cursor = conn.execute("select DATE from META where YEAR = ?", (year,))
+ meta = cursor.fetchone()
+ cursor.close()
+
+ if not meta or meta[0] != last_modified:
+ bb.debug(2, "Updating entries")
+ # Clear products table entries corresponding to current year
+ conn.execute("delete from PRODUCTS where ID like ?", ('CVE-%d%%' % year,)).close()
+
+ # Update db with current year json file
+ try:
+ response = urllib.request.urlopen(json_url, timeout=cve_socket_timeout)
+ if response:
+ update_db(conn, gzip.decompress(response.read()).decode('utf-8'))
+ conn.execute("insert or replace into META values (?, ?)", [year, last_modified]).close()
+ except urllib.error.URLError as e:
+ cve_f.write('Warning: CVE db update error, CVE data is outdated.\n\n')
+ bb.warn("Cannot parse CVE data (%s), update failed" % e.reason)
+ return False
+ else:
+ bb.debug(2, "Already up to date (last modified %s)" % last_modified)
+ # Update success, set the date to cve_check file.
+ if year == date.today().year:
+ cve_f.write('CVE database update : %s\n\n' % date.today())
+
+ conn.commit()
+ conn.close()
+ return True
+
+def initialize_db(conn):
+ with conn:
+ c = conn.cursor()
+
+ 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)")
+
+ c.execute("CREATE TABLE IF NOT EXISTS PRODUCTS (ID TEXT, \
+ VENDOR TEXT, PRODUCT TEXT, VERSION_START TEXT, OPERATOR_START TEXT, \
+ VERSION_END TEXT, OPERATOR_END TEXT)")
+ c.execute("CREATE INDEX IF NOT EXISTS PRODUCT_ID_IDX on PRODUCTS(ID);")
+
+ c.close()
+
+def parse_node_and_insert(conn, node, cveId):
+ # Parse children node if needed
+ for child in node.get('children', ()):
+ parse_node_and_insert(conn, child, cveId)
+
+ def cpe_generator():
+ for cpe in node.get('cpe_match', ()):
+ if not cpe['vulnerable']:
+ return
+ cpe23 = cpe.get('cpe23Uri')
+ if not cpe23:
+ return
+ cpe23 = cpe23.split(':')
+ if len(cpe23) < 6:
+ return
+ vendor = cpe23[3]
+ product = cpe23[4]
+ version = cpe23[5]
+
+ if cpe23[6] == '*' or cpe23[6] == '-':
+ version_suffix = ""
+ else:
+ version_suffix = "_" + cpe23[6]
+
+ if version != '*' and version != '-':
+ # Version is defined, this is a '=' match
+ yield [cveId, vendor, product, version + version_suffix, '=', '', '']
+ elif version == '-':
+ # no version information is available
+ yield [cveId, vendor, product, version, '', '', '']
+ else:
+ # Parse start version, end version and operators
+ op_start = ''
+ op_end = ''
+ v_start = ''
+ v_end = ''
+
+ if 'versionStartIncluding' in cpe:
+ op_start = '>='
+ v_start = cpe['versionStartIncluding']
+
+ if 'versionStartExcluding' in cpe:
+ op_start = '>'
+ v_start = cpe['versionStartExcluding']
+
+ if 'versionEndIncluding' in cpe:
+ op_end = '<='
+ v_end = cpe['versionEndIncluding']
+
+ if 'versionEndExcluding' in cpe:
+ op_end = '<'
+ v_end = cpe['versionEndExcluding']
+
+ if op_start or op_end or v_start or v_end:
+ yield [cveId, vendor, product, v_start, op_start, v_end, op_end]
+ else:
+ # This is no version information, expressed differently.
+ # Save processing by representing as -.
+ yield [cveId, vendor, product, '-', '', '', '']
+
+ conn.executemany("insert into PRODUCTS values (?, ?, ?, ?, ?, ?, ?)", cpe_generator()).close()
+
+def update_db(conn, jsondata):
+ import json
+ root = json.loads(jsondata)
+
+ for elt in root['CVE_Items']:
+ if not elt['impact']:
+ continue
+
+ accessVector = None
+ cveId = elt['cve']['CVE_data_meta']['ID']
+ cveDesc = elt['cve']['description']['description_data'][0]['value']
+ date = elt['lastModifiedDate']
+ try:
+ accessVector = elt['impact']['baseMetricV2']['cvssV2']['accessVector']
+ cvssv2 = elt['impact']['baseMetricV2']['cvssV2']['baseScore']
+ except KeyError:
+ cvssv2 = 0.0
+ try:
+ accessVector = accessVector or elt['impact']['baseMetricV3']['cvssV3']['attackVector']
+ cvssv3 = elt['impact']['baseMetricV3']['cvssV3']['baseScore']
+ except KeyError:
+ accessVector = accessVector or "UNKNOWN"
+ cvssv3 = 0.0
+
+ conn.execute("insert or replace into NVD values (?, ?, ?, ?, ?, ?)",
+ [cveId, cveDesc, cvssv2, cvssv3, date, accessVector]).close()
+
+ configurations = elt['configurations']['nodes']
+ for config in configurations:
+ parse_node_and_insert(conn, config, cveId)
+
+
+do_fetch[nostamp] = "1"
+
+EXCLUDE_FROM_WORLD = "1"
Restore cve-update-db from kirkstone Use cve-update-db-native.bb from OE 8c10f4a4dc12f65212576e6e568fa4369014aaa0 Signed-off-by: Marta Rybczynska <marta.rybczynska@ygreky.com> --- .../recipes-core/meta/cve-update-db-native.bb | 291 ++++++++++++++++++ 1 file changed, 291 insertions(+) create mode 100644 meta/recipes-core/meta/cve-update-db-native.bb