This update for poppler fixes the following issues: - CVE-2017-18267: Fixed an infinite recursion that would allow remote attackers to cause a denial of service . - CVE-2018-13988: Added an improper implementation check which otherwise could allow buffer overflows, memory corruption, and denial of service . - CVE-2018-16646: Fixed an infinite recursion which could allow a denial-of-service attack via a specially crafted PDF file . - CVE-2018-18897: Fixed a memory leak . - CVE-2018-19058: Fixed a bug which could allow a denial-of-service attack via a specially crafted PDF file . - CVE-2018-19059: Fixed an out-of-bounds read access which could allow a denial-of-service attack . - CVE-2018-19060: Fixed a NULL pointer dereference which could allow a denial-of-service attack . - CVE-2018-19149: Fixed a NULL pointer dereference which could allow a denial-of-service attack . - CVE-2018-20481: Fixed a NULL pointer dereference while handling unallocated XRef entries which could allow a denial-of-service attack . - CVE-2018-20551: Fixed a reachable assertion which could allow a denial-of-service attack through specially crafted PDF files . - CVE-2018-20650: Fixed a reachable assertion which could allow denial-of-service through specially crafted PDF files . - CVE-2018-20662: Fixed a bug which could potentially crash the running process by SIGABRT resulting in a denial-of-service attack through a specially crafted PDF file . - CVE-2019-10871: Fixed a heap-based buffer over-read in the function PSOutputDev::checkPageSlice at PSOutputDev.cc . - CVE-2019-10872: Fixed a heap-based buffer over-read in the function Splash::blitTransparent at splash/Splash.cc . - CVE-2019-14494: Fixed a divide-by-zero error in the function SplashOutputDev::tilingPatternFill . - CVE-2019-7310: Fixed a heap-based buffer over-read that allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted PDF document . - CVE-2019-9200: Fixed a heap-based buffer underwrite which could allow denial-of-service attack through a specially crafted PDF file - CVE-2019-9631: Fixed a heap-based buffer over-read in the CairoRescaleBox.cc downsample_row_box_filter function . - CVE-2019-9903: Fixed excessive stack consumption in the Dict::find method, which can be triggered by passing a crafted pdf file to the pdfunite binary . - CVE-2019-9959: Fixed integer overflow that made it possible to allocate a large memory chunk on the heap with a size controlled by an attacker . - CVE-2020-27778: Fixed buffer overflow vulnerability in pdftohtml .