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List:       openembedded-core
Subject:    [OE-core][dunfell 02/12] cve-update-db-native: skip on empty cpe23Uri
From:       "Steve Sakoman" <steve () sakoman ! com>
Date:       2021-04-30 15:33:41
Message-ID: 45148918628ba797755f3cbb52f065ec6dbbcfd2.1619796615.git.steve () sakoman ! com
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From: Konrad Weihmann <kweihmann@outlook.com>

Recently an entry in the NVD DB appeared that looks like that
{'vulnerable': True, 'cpe_name': []}.
As besides all the vulnerable flag no data is present we would get
a KeyError exception on acccess.
Use get method on dictionary and return if no meta data is present
Also quit if the length of the array after splitting is less than 6

Signed-off-by: Konrad Weihmann <kweihmann@outlook.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 00ce2796d97de2bc376b038d0ea7969088791d34)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
---
 meta/recipes-core/meta/cve-update-db-native.bb | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/meta/recipes-core/meta/cve-update-db-native.bb \
b/meta/recipes-core/meta/cve-update-db-native.bb index 5d9fb59cbc..e86c69803f 100644
--- a/meta/recipes-core/meta/cve-update-db-native.bb
+++ b/meta/recipes-core/meta/cve-update-db-native.bb
@@ -132,7 +132,12 @@ def parse_node_and_insert(c, node, cveId):
         for cpe in node.get('cpe_match', ()):
             if not cpe['vulnerable']:
                 return
-            cpe23 = cpe['cpe23Uri'].split(':')
+            cpe23 = cpe.get('cpe23Uri')
+            if not cpe23:
+                return
+            cpe23 = cpe23.split(':')
+            if len(cpe23) < 6:
+                return
             vendor = cpe23[3]
             product = cpe23[4]
             version = cpe23[5]
-- 
2.25.1



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