dwgobjblockcontrolgetblockheaders in dwg_api.c in GNU LibreDWG 0.5.1048 allows remote attackers to cause a denial of service (NULL pointer dereference and SEGV) via a crafted dwg file.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-14471.json"