feat: added config option to allow CVE matches without version constr…

…aints

src/config/fact-core-config.toml

@@ -112,6 +112,8 @@ name = "cve_lookup"
 processes = 4
 # CVE scores greater or equal to this value are shown as "critical"
 min-critical-score = 9.0
+# match CVE entries without versions constraints (`false` by default due to the high risk of false positives)
+match-any = false
 
 [[backend.plugin]]
 name = "cwe_checker"

src/plugins/analysis/cve_lookup/code/cve_lookup.py

@@ -37,14 +37,15 @@ class AnalysisPlugin(AnalysisBasePlugin):
 
     def additional_setup(self):
         self.min_crit_score = getattr(config.backend.plugin.get(self.NAME, {}), 'min-critical-score', 9.0)
+        self.match_any = getattr(config.backend.plugin.get(self.NAME, {}), 'match-any', False)
 
     def process_object(self, file_object: FileObject) -> FileObject:
         """
         Process the given file object and look up vulnerabilities for each software component.
         """
         cves = {'cve_results': {}}
         connection = DbConnection(f'sqlite:///{DB_PATH}')
-        lookup = Lookup(file_object, connection)
+        lookup = Lookup(file_object, connection, match_any=self.match_any)
         for value in file_object.processed_analysis['software_components']['result'].values():
             product = value['meta']['software_name']
             version = value['meta']['version'][0]

src/plugins/analysis/cve_lookup/internal/lookup.py

@@ -25,9 +25,10 @@
 
 
 class Lookup:
-    def __init__(self, file_object: FileObject, connection: DbConnection):
+    def __init__(self, file_object: FileObject, connection: DbConnection, match_any: bool = False):
         self.file_object = file_object
         self.db_interface = DbInterface(connection)
+        self.match_any = match_any
 
     def lookup_vulnerabilities(
         self,
@@ -38,10 +39,8 @@ def lookup_vulnerabilities(
         Look up vulnerabilities for a given product and requested version.
         """
         vulnerabilities = {}
-        product_terms, version = (
-            self._generate_search_terms(product_name),
-            replace_wildcards([requested_version])[0],
-        )
+        product_terms = self._generate_search_terms(product_name)
+        version = replace_wildcards([requested_version])[0]
         cpe_matches = self.db_interface.match_cpes(product_terms)
         if len(cpe_matches) == 0:
             logging.debug(f'No CPEs were found for product {product_name}')
@@ -106,6 +105,8 @@ def _version_in_boundaries(self, associations: list[Association], requested_vers
                     association.version_end_excluding,
                 ]
             ):
+                if self.match_any and association.cpe.version == 'ANY':
+                    association_matches.append(association)
                 continue
             if self._is_version_in_boundaries(association, requested_version):
                 association_matches.append(association)