The function Object::isName() in Object.h (called from Gfx::opSetFillColorN) in Xpdf 4.00 allows remote attackers to cause a denial of service (stack-based buffer over-read) via a crafted pdf file, as demonstrated by pdftoppm.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-18456.json"
[ { "events": [ { "introduced": "0" }, { "last_affected": "4.00" } ] } ]