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-rw-r--r--meta/classes/cve-check.bbclass142
1 files changed, 87 insertions, 55 deletions
diff --git a/meta/classes/cve-check.bbclass b/meta/classes/cve-check.bbclass
index 743bc08a4f..c00d2910be 100644
--- a/meta/classes/cve-check.bbclass
+++ b/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"
@@ -37,32 +37,33 @@ 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"
+do_cve_check[depends] = "cve-update-db-native:do_populate_cve_db"
do_cve_check[nostamp] = "1"
python cve_check_cleanup () {
@@ -163,65 +164,94 @@ 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.
"""
-
import ast, csv, tempfile, subprocess, io
+ from distutils.version import LooseVersion
- 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.getVar("CVE_CHECK_DB_FILE")
+ conn = sqlite3.connect(db_file)
+
+ for product in products:
+ c = conn.cursor()
+ if ":" in product:
+ vendor, product = product.split(":", 1)
+ c.execute("SELECT * FROM PRODUCTS WHERE PRODUCT IS ? AND VENDOR IS ?", (product, vendor))
+ else:
+ c.execute("SELECT * FROM PRODUCTS WHERE PRODUCT IS ?", (product,))
+
+ for row in c:
+ cve = row[0]
+ version_start = row[3]
+ operator_start = row[4]
+ version_end = row[5]
+ operator_end = row[6]
+
+ if cve in cve_whitelist:
+ bb.note("%s-%s has been whitelisted for %s" % (product, pv, cve))
+ elif cve in patched_cves:
+ bb.note("%s has been patched" % (cve))
+ else:
+ to_append = False
+ if (operator_start == '=' and pv == version_start):
+ cves_unpatched.append(cve)
else:
+ if operator_start:
+ try:
+ to_append_start = (operator_start == '>=' and LooseVersion(pv) >= LooseVersion(version_start))
+ to_append_start |= (operator_start == '>' and LooseVersion(pv) > LooseVersion(version_start))
+ except:
+ bb.note("%s: Failed to compare %s %s %s for %s" %
+ (product, pv, operator_start, version_start, cve))
+ to_append_start = False
+ else:
+ to_append_start = False
+
+ if operator_end:
+ try:
+ to_append_end = (operator_end == '<=' and LooseVersion(pv) <= LooseVersion(version_end))
+ to_append_end |= (operator_end == '<' and LooseVersion(pv) < LooseVersion(version_end))
+ except:
+ bb.note("%s: Failed to compare %s %s %s for %s" %
+ (product, pv, operator_end, version_end, cve))
+ to_append_end = False
+ else:
+ to_append_end = False
+
+ if operator_start and operator_end:
+ to_append = to_append_start and to_append_end
+ else:
+ to_append = to_append_start or to_append_end
+
+ if to_append:
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))
+ bb.debug(2, "%s-%s is not patched for %s" % (product, pv, 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.
+ Get CVE information from the database.
Unfortunately the only way to get CVE info is set the output to
html (hard to parse) or query directly the database.
@@ -241,9 +271,10 @@ def get_cve_info(d, cves):
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]
+ 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
@@ -270,7 +301,8 @@ 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)
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-04-16 07:01:40 +0000