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cve-update-nvd2-native: fix cvssV3 metrics

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After upgrade to soon-to-be-released kirkstone 4.0.11 CVE annotations got broken.
Anything which has only cvssV3 does not resolve properly.
Fix the API fields used to extract it.

i0.0 score is now at level of NVD DB 1.1.
All CVEs with UNKNOWN vector are not present in NVD DB 1.1.

NVD API 1.1:
sqlite> select vector, count(vector) from nvd group by vector;
ADJACENT_NETWORK|4776
LOCAL|32146
NETWORK|167746
PHYSICAL|185
sqlite> select scorev3, count(scorev3) from nvd group by scorev3;
0.0|73331
1.8|7
1.9|3
...

NVD API 2.0 (broken):
sqlite> select vector, count(vector) from nvd group by vector;
ADJACENT_NETWORK|4587
LOCAL|26273
NETWORK|150421
UNKNOWN|24644
sqlite> select scorev3, count(scorev3) from nvd group by scorev3;
0.0|205925

NVD API 2.0 (fixed):
sqlite> select vector, count(vector) from nvd group by vector;
ADJACENT_NETWORK|5090
LOCAL|32322
NETWORK|168004
PHYSICAL|213
UNKNOWN|511
sqlite> select scorev3, count(scorev3) from nvd group by scorev3;
0.0|73841
1.8|7
1.9|3
...

(From OE-Core rev: 61a5857efdcc0f49c69c0deb24fce99007aeef19)

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Peter Marko
2023-06-29 23:12:52 +02:00
committed by Richard Purdie
parent 773594fd74
commit abe98b0343
1 changed files with 11 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
meta/recipes-core/meta/cve-update-nvd2-native.bb
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@@ -312,12 +312,19 @@ def update_db(conn, elt):
cvssv2 = elt['cve']['metrics']['cvssMetricV2'][0]['cvssData']['baseScore']
except KeyError:
cvssv2 = 0.0
cvssv3 = None
try:
accessVector = accessVector or elt['impact']['baseMetricV3']['cvssV3']['attackVector']
cvssv3 = elt['impact']['baseMetricV3']['cvssV3']['baseScore']
accessVector = accessVector or elt['cve']['metrics']['cvssMetricV30'][0]['cvssData']['attackVector']
cvssv3 = elt['cve']['metrics']['cvssMetricV30'][0]['cvssData']['baseScore']
except KeyError:
accessVector = accessVector or "UNKNOWN"
cvssv3 = 0.0
pass
try:
accessVector = accessVector or elt['cve']['metrics']['cvssMetricV31'][0]['cvssData']['attackVector']
cvssv3 = cvssv3 or elt['cve']['metrics']['cvssMetricV31'][0]['cvssData']['baseScore']
except KeyError:
pass
accessVector = accessVector or "UNKNOWN"
cvssv3 = cvssv3 or 0.0
conn.execute("insert or replace into NVD values (?, ?, ?, ?, ?, ?)",
[cveId, cveDesc, cvssv2, cvssv3, date, accessVector]).close()