An issue was discovered in LibTIFF 4.0.9. There is a int32 overflow in multiply_ms in tools/ppm2tiff.c, which can cause a denial of service (crash) or possibly have unspecified other impact via a crafted image file.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-17100.json"