A stack-based buffer over-read exists in FoFiTrueType::dumpString in fofi/FoFiTrueType.cc in Xpdf 4.01.01. It can, for example, be triggered by sending crafted TrueType data in a PDF document to the pdftops tool. It might allow an attacker to cause Denial of Service or leak memory data into dump content. References: https://forum.xpdfreader.com/viewtopic.php?f=3&t=41801 https://lists.debian.org/debian-lts-announce/2019/06/msg00002.html
Created mingw-poppler tracking bugs for this issue: Affects: fedora-all [bug 1850881] Created poppler tracking bugs for this issue: Affects: fedora-all [bug 1850880] Created xpdf tracking bugs for this issue: Affects: epel-all [bug 1850879] Affects: fedora-all [bug 1850877]
Upstream patches: https://gitlab.freedesktop.org/poppler/poppler/commit/cdb7ad95f7c8fbf63ade040d8a07ec96467042fc https://gitlab.freedesktop.org/poppler/poppler/commit/bf4aae25a244b1033a2479b9a8f633224f7d5de5