diff options
Diffstat (limited to 'external/poky/meta/classes')
-rw-r--r-- | external/poky/meta/classes/cve-check.bbclass | 181 | ||||
-rw-r--r-- | external/poky/meta/classes/kernel.bbclass | 2 |
2 files changed, 108 insertions, 75 deletions
diff --git a/external/poky/meta/classes/cve-check.bbclass b/external/poky/meta/classes/cve-check.bbclass index 743bc08a..19ed5548 100644 --- a/external/poky/meta/classes/cve-check.bbclass +++ b/external/poky/meta/classes/cve-check.bbclass @@ -26,7 +26,7 @@ CVE_PRODUCT ??= "${BPN}" CVE_VERSION ??= "${PV}" CVE_CHECK_DB_DIR ?= "${DL_DIR}/CVE_CHECK" -CVE_CHECK_DB_FILE ?= "${CVE_CHECK_DB_DIR}/nvd.db" +CVE_CHECK_DB_FILE ?= "${CVE_CHECK_DB_DIR}/nvdcve_1.0.db" CVE_CHECK_LOG ?= "${T}/cve.log" CVE_CHECK_TMP_FILE ?= "${TMPDIR}/cve_check" @@ -37,39 +37,39 @@ CVE_CHECK_COPY_FILES ??= "1" CVE_CHECK_CREATE_MANIFEST ??= "1" # Whitelist for packages (PN) -CVE_CHECK_PN_WHITELIST = "\ - glibc-locale \ -" +CVE_CHECK_PN_WHITELIST ?= "" -# Whitelist for CVE and version of package -CVE_CHECK_CVE_WHITELIST = "{\ - 'CVE-2014-2524': ('6.3','5.2',), \ -}" +# Whitelist for CVE. If a CVE is found, then it is considered patched. +# The value is a string containing space separated CVE values: +# +# CVE_CHECK_WHITELIST = 'CVE-2014-2524 CVE-2018-1234' +# +CVE_CHECK_WHITELIST ?= "" python do_cve_check () { """ Check recipe for patched and unpatched CVEs """ - if os.path.exists(d.getVar("CVE_CHECK_TMP_FILE")): + if os.path.exists(d.getVar("CVE_CHECK_DB_FILE")): patched_cves = get_patches_cves(d) patched, unpatched = check_cves(d, patched_cves) if patched or unpatched: cve_data = get_cve_info(d, patched + unpatched) cve_write_data(d, patched, unpatched, cve_data) else: - bb.note("Failed to update CVE database, skipping CVE check") + bb.note("No CVE database found, skipping CVE check") + } -addtask cve_check after do_unpack before do_build -do_cve_check[depends] = "cve-check-tool-native:do_populate_sysroot cve-check-tool-native:do_populate_cve_db" +addtask cve_check before do_build +do_cve_check[depends] = "cve-update-db-native:do_populate_cve_db" do_cve_check[nostamp] = "1" python cve_check_cleanup () { """ Delete the file used to gather all the CVE information. """ - bb.utils.remove(e.data.getVar("CVE_CHECK_TMP_FILE")) } @@ -163,89 +163,121 @@ def get_patches_cves(d): def check_cves(d, patched_cves): """ - Run cve-check-tool looking for patched and unpatched CVEs. + Connect to the NVD database and find unpatched cves. """ + from distutils.version import LooseVersion - import ast, csv, tempfile, subprocess, io - - cves_patched = [] cves_unpatched = [] - bpn = d.getVar("CVE_PRODUCT") + # CVE_PRODUCT can contain more than one product (eg. curl/libcurl) + products = d.getVar("CVE_PRODUCT").split() # If this has been unset then we're not scanning for CVEs here (for example, image recipes) - if not bpn: + if not products: return ([], []) pv = d.getVar("CVE_VERSION").split("+git")[0] - cves = " ".join(patched_cves) - cve_db_dir = d.getVar("CVE_CHECK_DB_DIR") - cve_whitelist = ast.literal_eval(d.getVar("CVE_CHECK_CVE_WHITELIST")) - cve_cmd = "cve-check-tool" - cmd = [cve_cmd, "--no-html", "--skip-update", "--csv", "--not-affected", "-t", "faux", "-d", cve_db_dir] # If the recipe has been whitlisted we return empty lists if d.getVar("PN") in d.getVar("CVE_CHECK_PN_WHITELIST").split(): bb.note("Recipe has been whitelisted, skipping check") return ([], []) - try: - # Write the faux CSV file to be used with cve-check-tool - fd, faux = tempfile.mkstemp(prefix="cve-faux-") - with os.fdopen(fd, "w") as f: - for pn in bpn.split(): - f.write("%s,%s,%s,\n" % (pn, pv, cves)) - cmd.append(faux) - - output = subprocess.check_output(cmd).decode("utf-8") - bb.debug(2, "Output of command %s:\n%s" % ("\n".join(cmd), output)) - except subprocess.CalledProcessError as e: - bb.warn("Couldn't check for CVEs: %s (output %s)" % (e, e.output)) - finally: - os.remove(faux) - - for row in csv.reader(io.StringIO(output)): - # Third row has the unpatched CVEs - if row[2]: - for cve in row[2].split(): - # Skip if the CVE has been whitlisted for the current version - if pv in cve_whitelist.get(cve,[]): - bb.note("%s-%s has been whitelisted for %s" % (bpn, pv, cve)) + old_cve_whitelist = d.getVar("CVE_CHECK_CVE_WHITELIST") + if old_cve_whitelist: + bb.warn("CVE_CHECK_CVE_WHITELIST is deprecated, please use CVE_CHECK_WHITELIST.") + cve_whitelist = d.getVar("CVE_CHECK_WHITELIST").split() + + import sqlite3 + db_file = d.expand("file:${CVE_CHECK_DB_FILE}?mode=ro") + conn = sqlite3.connect(db_file, uri=True) + + # For each of the known product names (e.g. curl has CPEs using curl and libcurl)... + for product in products: + if ":" in product: + vendor, product = product.split(":", 1) + else: + vendor = "%" + + # Find all relevant CVE IDs. + for cverow in conn.execute("SELECT DISTINCT ID FROM PRODUCTS WHERE PRODUCT IS ? AND VENDOR LIKE ?", (product, vendor)): + cve = cverow[0] + + if cve in cve_whitelist: + bb.note("%s-%s has been whitelisted for %s" % (product, pv, cve)) + # TODO: this should be in the report as 'whitelisted' + patched_cves.add(cve) + continue + elif cve in patched_cves: + bb.note("%s has been patched" % (cve)) + continue + + vulnerable = False + for row in conn.execute("SELECT * FROM PRODUCTS WHERE ID IS ? AND PRODUCT IS ? AND VENDOR LIKE ?", (cve, product, vendor)): + (_, _, _, version_start, operator_start, version_end, operator_end) = row + #bb.debug(2, "Evaluating row " + str(row)) + + if (operator_start == '=' and pv == version_start): + vulnerable = True else: + if operator_start: + try: + vulnerable_start = (operator_start == '>=' and LooseVersion(pv) >= LooseVersion(version_start)) + vulnerable_start |= (operator_start == '>' and LooseVersion(pv) > LooseVersion(version_start)) + except: + bb.warn("%s: Failed to compare %s %s %s for %s" % + (product, pv, operator_start, version_start, cve)) + vulnerable_start = False + else: + vulnerable_start = False + + if operator_end: + try: + vulnerable_end = (operator_end == '<=' and LooseVersion(pv) <= LooseVersion(version_end)) + vulnerable_end |= (operator_end == '<' and LooseVersion(pv) < LooseVersion(version_end)) + except: + bb.warn("%s: Failed to compare %s %s %s for %s" % + (product, pv, operator_end, version_end, cve)) + vulnerable_end = False + else: + vulnerable_end = False + + if operator_start and operator_end: + vulnerable = vulnerable_start and vulnerable_end + else: + vulnerable = vulnerable_start or vulnerable_end + + if vulnerable: + bb.note("%s-%s is vulnerable to %s" % (product, pv, cve)) cves_unpatched.append(cve) - bb.debug(2, "%s-%s is not patched for %s" % (bpn, pv, cve)) - # Fourth row has patched CVEs - if row[3]: - for cve in row[3].split(): - cves_patched.append(cve) - bb.debug(2, "%s-%s is patched for %s" % (bpn, pv, cve)) + break + + if not vulnerable: + bb.note("%s-%s is not vulnerable to %s" % (product, pv, cve)) + # TODO: not patched but not vulnerable + patched_cves.add(cve) + + conn.close() - return (cves_patched, cves_unpatched) + return (list(patched_cves), cves_unpatched) def get_cve_info(d, cves): """ - Get CVE information from the database used by cve-check-tool. - - Unfortunately the only way to get CVE info is set the output to - html (hard to parse) or query directly the database. + Get CVE information from the database. """ - try: - import sqlite3 - except ImportError: - from pysqlite2 import dbapi2 as sqlite3 + import sqlite3 cve_data = {} - db_file = d.getVar("CVE_CHECK_DB_FILE") - placeholder = ",".join("?" * len(cves)) - query = "SELECT * FROM NVD WHERE id IN (%s)" % placeholder - conn = sqlite3.connect(db_file) - cur = conn.cursor() - for row in cur.execute(query, tuple(cves)): - cve_data[row[0]] = {} - cve_data[row[0]]["summary"] = row[1] - cve_data[row[0]]["score"] = row[2] - cve_data[row[0]]["modified"] = row[3] - cve_data[row[0]]["vector"] = row[4] - conn.close() + conn = sqlite3.connect(d.getVar("CVE_CHECK_DB_FILE")) + for cve in cves: + for row in conn.execute("SELECT * FROM NVD WHERE ID IS ?", (cve,)): + cve_data[row[0]] = {} + 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] + + conn.close() return cve_data def cve_write_data(d, patched, unpatched, cve_data): @@ -270,7 +302,8 @@ def cve_write_data(d, patched, unpatched, cve_data): unpatched_cves.append(cve) write_string += "CVE STATUS: Unpatched\n" write_string += "CVE SUMMARY: %s\n" % cve_data[cve]["summary"] - write_string += "CVSS v2 BASE SCORE: %s\n" % cve_data[cve]["score"] + 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 += "VECTOR: %s\n" % cve_data[cve]["vector"] write_string += "MORE INFORMATION: %s%s\n\n" % (nvd_link, cve) diff --git a/external/poky/meta/classes/kernel.bbclass b/external/poky/meta/classes/kernel.bbclass index bd185e25..c72d1fe7 100644 --- a/external/poky/meta/classes/kernel.bbclass +++ b/external/poky/meta/classes/kernel.bbclass @@ -451,7 +451,7 @@ do_shared_workdir () { cp .config $kerneldir/ mkdir -p $kerneldir/include/config cp include/config/kernel.release $kerneldir/include/config/kernel.release - if [ -e certs/signing_key.pem ]; then + if [ -e certs/signing_key.x509 ]; then # The signing_key.* files are stored in the certs/ dir in # newer Linux kernels mkdir -p $kerneldir/certs |