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cve-check: Update unpatched CVE matching

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Now that cve-update-db added CPE information to NVD database. We can
check for unpatched versions with operators '<', '<=', '>', and '>='.

(From OE-Core rev: bc0195be1b15bcffe60127bc5e8b7011a853c2ed)

Signed-off-by: Pierre Le Magourou <pierre.lemagourou@softbankrobotics.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Pierre Le Magourou
2019-07-05 11:40:38 +02:00
committed by Richard Purdie
parent e7ee189c6a
commit 8073a9862e
1 changed files with 40 additions and 14 deletions
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54
meta/classes/cve-check.bbclass
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@@ -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-json.db"
CVE_CHECK_DB_FILE ?= "${CVE_CHECK_DB_DIR}/nvdcve.db"
CVE_CHECK_LOG ?= "${T}/cve.log"
CVE_CHECK_TMP_FILE ?= "${TMPDIR}/cve_check"
@@ -189,27 +189,53 @@ def check_cves(d, patched_cves):
conn = sqlite3.connect(db_file)
c = conn.cursor()
query = """SELECT * FROM PRODUCTS WHERE
(PRODUCT IS '{0}' AND VERSION = '{1}' AND OPERATOR IS '=') OR
(PRODUCT IS '{0}' AND OPERATOR IS '<=');"""
query = "SELECT * FROM PRODUCTS WHERE PRODUCT IS '{0}';"
for product in products:
for row in c.execute(query.format(product, pv)):
cve = row[1]
version = row[4]
try:
discardVersion = LooseVersion(version) < LooseVersion(pv)
except:
discardVersion = True
version_start = row[4]
operator_start = row[5]
version_end = row[6]
operator_end = row[7]
if pv in cve_whitelist.get(cve, []):
bb.note("%s-%s has been whitelisted for %s" % (product, pv, cve))
elif cve in patched_cves:
bb.note("%s has been patched" % (cve))
elif discardVersion:
bb.debug(2, "Do not consider version %s " % (version))
else:
cves_unpatched.append(cve)
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" % (product, pv, cve))
conn.close()
@@ -217,7 +243,7 @@ def check_cves(d, patched_cves):
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.