This update for poppler fixes the following issues: - CVE-2017-14977: Fixed a NULL pointer dereference vulnerability in the FoFiTrueType::getCFFBlock function in FoFiTrueType.cc that occurred due to lack of validation of a table pointer, which allows an attacker to launch a denial of service attack. - CVE-2017-1000456: Validate boundaries in TextPool::addWord to prevent overflows in subsequent calculations - CVE-2017-15565: Prevent NULL Pointer dereference in the GfxImageColorMap::getGrayLine function via a crafted PDF document