The tokenizer in QPDF 6.0.0 and 7.0.b1 is recursive for arrays and dictionaries, which allows remote attackers to cause a denial of service (stack consumption and segmentation fault) or possibly have unspecified other impact via a PDF document with a deep data structure, as demonstrated by a crash in QPDFObjectHandle::parseInternal in libqpdf/QPDFObjectHandle.cc. Upstream bug: https://github.com/qpdf/qpdf/issues/146 Upstream patch: https://github.com/qpdf/qpdf/commit/ad527a64f93dca12f6aabab2ca99ae5eb352ab4b
Created qpdf tracking bugs for this issue: Affects: epel-6 [bug 1485850] Affects: fedora-all [bug 1485849]