In Artifex MuPDF 1.12.0, there is a heap-based buffer overflow vulnerability in the do_pdf_save_document function in the pdf/pdf-write.c file. Remote attackers could leverage the vulnerability to cause a denial of service via a crafted pdf file.Referenceshttps://security.gentoo.org/glsa/201811-15https://www.debian.org/security/2018/dsa-4334http://www.securityfocus.com/bid/102823https://bugs.ghostscript.com/show_bug.cgi?id=698908https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=3e30fbb7bf5efd88df431e366492356e7eb969ec