--- /dev/null
+#!/usr/bin/env python
+
+# Copyright (C) 2009 by Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+# Copyright (C) 2020 by Gregory CLEMENT <gregory.clement@bootlin.com>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+import datetime
+import os
+import requests # URL checking
+import distutils.version
+import time
+import gzip
+import sys
+
+try:
+ import ijson
+except ImportError:
+ sys.stderr.write("You need ijson to parse NVD for CVE check\n")
+ exit(1)
+
+sys.path.append('utils/')
+
+NVD_START_YEAR = 2002
+NVD_JSON_VERSION = "1.0"
+NVD_BASE_URL = "https://nvd.nist.gov/feeds/json/cve/" + NVD_JSON_VERSION
+
+class CVE:
+ """An accessor class for CVE Items in NVD files"""
+ CVE_AFFECTS = 1
+ CVE_DOESNT_AFFECT = 2
+ CVE_UNKNOWN = 3
+
+ def __init__(self, nvd_cve):
+ """Initialize a CVE from its NVD JSON representation"""
+ self.nvd_cve = nvd_cve
+
+ @staticmethod
+ def download_nvd_year(nvd_path, year):
+ metaf = "nvdcve-%s-%s.meta" % (NVD_JSON_VERSION, year)
+ path_metaf = os.path.join(nvd_path, metaf)
+ jsonf_gz = "nvdcve-%s-%s.json.gz" % (NVD_JSON_VERSION, year)
+ path_jsonf_gz = os.path.join(nvd_path, jsonf_gz)
+
+ # If the database file is less than a day old, we assume the NVD data
+ # locally available is recent enough.
+ if os.path.exists(path_jsonf_gz) and os.stat(path_jsonf_gz).st_mtime >= time.time() - 86400:
+ return path_jsonf_gz
+
+ # If not, we download the meta file
+ url = "%s/%s" % (NVD_BASE_URL, metaf)
+ print("Getting %s" % url)
+ page_meta = requests.get(url)
+ page_meta.raise_for_status()
+
+ # If the meta file already existed, we compare the existing
+ # one with the data newly downloaded. If they are different,
+ # we need to re-download the database.
+ # If the database does not exist locally, we need to redownload it in
+ # any case.
+ if os.path.exists(path_metaf) and os.path.exists(path_jsonf_gz):
+ meta_known = open(path_metaf, "r").read()
+ if page_meta.text == meta_known:
+ return path_jsonf_gz
+
+ # Grab the compressed JSON NVD, and write files to disk
+ url = "%s/%s" % (NVD_BASE_URL, jsonf_gz)
+ print("Getting %s" % url)
+ page_json = requests.get(url)
+ page_json.raise_for_status()
+ open(path_jsonf_gz, "wb").write(page_json.content)
+ open(path_metaf, "w").write(page_meta.text)
+ return path_jsonf_gz
+
+ @classmethod
+ def read_nvd_dir(cls, nvd_dir):
+ """
+ Iterate over all the CVEs contained in NIST Vulnerability Database
+ feeds since NVD_START_YEAR. If the files are missing or outdated in
+ nvd_dir, a fresh copy will be downloaded, and kept in .json.gz
+ """
+ for year in range(NVD_START_YEAR, datetime.datetime.now().year + 1):
+ filename = CVE.download_nvd_year(nvd_dir, year)
+ try:
+ content = ijson.items(gzip.GzipFile(filename), 'CVE_Items.item')
+ except: # noqa: E722
+ print("ERROR: cannot read %s. Please remove the file then rerun this script" % filename)
+ raise
+ for cve in content:
+ yield cls(cve['cve'])
+
+ def each_product(self):
+ """Iterate over each product section of this cve"""
+ for vendor in self.nvd_cve['affects']['vendor']['vendor_data']:
+ for product in vendor['product']['product_data']:
+ yield product
+
+ @property
+ def identifier(self):
+ """The CVE unique identifier"""
+ return self.nvd_cve['CVE_data_meta']['ID']
+
+ @property
+ def pkg_names(self):
+ """The set of package names referred by this CVE definition"""
+ return set(p['product_name'] for p in self.each_product())
+
+ def affects(self, br_pkg):
+ """
+ True if the Buildroot Package object passed as argument is affected
+ by this CVE.
+ """
+ if br_pkg.is_cve_ignored(self.identifier):
+ return self.CVE_DOESNT_AFFECT
+
+ for product in self.each_product():
+ if product['product_name'] != br_pkg.name:
+ continue
+
+ for v in product['version']['version_data']:
+ if v["version_affected"] == "=":
+ if v["version_value"] == "-":
+ return self.CVE_AFFECTS
+ elif br_pkg.current_version == v["version_value"]:
+ return self.CVE_AFFECTS
+ elif v["version_affected"] == "<=":
+ pkg_version = distutils.version.LooseVersion(br_pkg.current_version)
+ if not hasattr(pkg_version, "version"):
+ print("Cannot parse package '%s' version '%s'" % (br_pkg.name, br_pkg.current_version))
+ continue
+ cve_affected_version = distutils.version.LooseVersion(v["version_value"])
+ if not hasattr(cve_affected_version, "version"):
+ print("Cannot parse CVE affected version '%s'" % v["version_value"])
+ continue
+ try:
+ affected = pkg_version <= cve_affected_version
+ except TypeError:
+ return self.CVE_UNKNOWN
+ if affected:
+ return self.CVE_AFFECTS
+ else:
+ return self.CVE_DOESNT_AFFECT
+ else:
+ print("version_affected: %s" % v['version_affected'])
+ return self.CVE_DOESNT_AFFECT
import subprocess
import requests # NVD database download
import json
-import ijson
-import distutils.version
import time
-import gzip
import sys
sys.path.append('utils/')
from getdeveloperlib import parse_developers # noqa: E402
-NVD_START_YEAR = 2002
-NVD_JSON_VERSION = "1.0"
-NVD_BASE_URL = "https://nvd.nist.gov/feeds/json/cve/" + NVD_JSON_VERSION
+import cve as cvecheck
+
INFRA_RE = re.compile(r"\$\(eval \$\(([a-z-]*)-package\)\)")
URL_RE = re.compile(r"\s*https?://\S*\s*$")
RM_API_STATUS_FOUND_BY_PATTERN = 3
RM_API_STATUS_NOT_FOUND = 4
-CVE_AFFECTS = 1
-CVE_DOESNT_AFFECT = 2
-CVE_UNKNOWN = 3
-
class Defconfig:
def __init__(self, name, path):
self.is_status_ok('license-files'), self.status['hash'], self.patch_count)
-class CVE:
- """An accessor class for CVE Items in NVD files"""
- def __init__(self, nvd_cve):
- """Initialize a CVE from its NVD JSON representation"""
- self.nvd_cve = nvd_cve
-
- @staticmethod
- def download_nvd_year(nvd_path, year):
- metaf = "nvdcve-%s-%s.meta" % (NVD_JSON_VERSION, year)
- path_metaf = os.path.join(nvd_path, metaf)
- jsonf_gz = "nvdcve-%s-%s.json.gz" % (NVD_JSON_VERSION, year)
- path_jsonf_gz = os.path.join(nvd_path, jsonf_gz)
-
- # If the database file is less than a day old, we assume the NVD data
- # locally available is recent enough.
- if os.path.exists(path_jsonf_gz) and os.stat(path_jsonf_gz).st_mtime >= time.time() - 86400:
- return path_jsonf_gz
-
- # If not, we download the meta file
- url = "%s/%s" % (NVD_BASE_URL, metaf)
- print("Getting %s" % url)
- page_meta = requests.get(url)
- page_meta.raise_for_status()
-
- # If the meta file already existed, we compare the existing
- # one with the data newly downloaded. If they are different,
- # we need to re-download the database.
- # If the database does not exist locally, we need to redownload it in
- # any case.
- if os.path.exists(path_metaf) and os.path.exists(path_jsonf_gz):
- meta_known = open(path_metaf, "r").read()
- if page_meta.text == meta_known:
- return path_jsonf_gz
-
- # Grab the compressed JSON NVD, and write files to disk
- url = "%s/%s" % (NVD_BASE_URL, jsonf_gz)
- print("Getting %s" % url)
- page_json = requests.get(url)
- page_json.raise_for_status()
- open(path_jsonf_gz, "wb").write(page_json.content)
- open(path_metaf, "w").write(page_meta.text)
- return path_jsonf_gz
-
- @classmethod
- def read_nvd_dir(cls, nvd_dir):
- """
- Iterate over all the CVEs contained in NIST Vulnerability Database
- feeds since NVD_START_YEAR. If the files are missing or outdated in
- nvd_dir, a fresh copy will be downloaded, and kept in .json.gz
- """
- for year in range(NVD_START_YEAR, datetime.datetime.now().year + 1):
- filename = CVE.download_nvd_year(nvd_dir, year)
- try:
- content = ijson.items(gzip.GzipFile(filename), 'CVE_Items.item')
- except: # noqa: E722
- print("ERROR: cannot read %s. Please remove the file then rerun this script" % filename)
- raise
- for cve in content:
- yield cls(cve['cve'])
-
- def each_product(self):
- """Iterate over each product section of this cve"""
- for vendor in self.nvd_cve['affects']['vendor']['vendor_data']:
- for product in vendor['product']['product_data']:
- yield product
-
- @property
- def identifier(self):
- """The CVE unique identifier"""
- return self.nvd_cve['CVE_data_meta']['ID']
-
- @property
- def pkg_names(self):
- """The set of package names referred by this CVE definition"""
- return set(p['product_name'] for p in self.each_product())
-
- def affects(self, br_pkg):
- """
- True if the Buildroot Package object passed as argument is affected
- by this CVE.
- """
- if br_pkg.is_cve_ignored(self.identifier):
- return CVE_DOESNT_AFFECT
-
- for product in self.each_product():
- if product['product_name'] != br_pkg.name:
- continue
-
- for v in product['version']['version_data']:
- if v["version_affected"] == "=":
- if v["version_value"] == "-":
- return CVE_AFFECTS
- elif br_pkg.current_version == v["version_value"]:
- return CVE_AFFECTS
- elif v["version_affected"] == "<=":
- pkg_version = distutils.version.LooseVersion(br_pkg.current_version)
- if not hasattr(pkg_version, "version"):
- print("Cannot parse package '%s' version '%s'" % (br_pkg.name, br_pkg.current_version))
- continue
- cve_affected_version = distutils.version.LooseVersion(v["version_value"])
- if not hasattr(cve_affected_version, "version"):
- print("Cannot parse CVE affected version '%s'" % v["version_value"])
- continue
- try:
- affected = pkg_version <= cve_affected_version
- except TypeError:
- return CVE_UNKNOWN
- if affected:
- return CVE_AFFECTS
- else:
- return CVE_DOESNT_AFFECT
- else:
- print("version_affected: %s" % v['version_affected'])
- return CVE_DOESNT_AFFECT
-
-
def get_pkglist(npackages, package_list):
"""
Builds the list of Buildroot packages, returning a list of Package
if not os.path.isdir(nvd_path):
os.makedirs(nvd_path)
- for cve in CVE.read_nvd_dir(nvd_path):
+ for cve in cvecheck.CVE.read_nvd_dir(nvd_path):
for pkg_name in cve.pkg_names:
- if pkg_name in packages and cve.affects(packages[pkg_name]) == CVE_AFFECTS:
+ if pkg_name in packages and cve.affects(packages[pkg_name]) == cve.CVE_AFFECTS:
packages[pkg_name].cves.append(cve.identifier)
projects / buildroot.git / commitdiff