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.
{
"source": "CPE_FIELD",
"cpe": [
"cpe:2.3:a:qpdf_project:qpdf:6.0.0:*:*:*:*:*:*:*",
"cpe:2.3:a:qpdf_project:qpdf:7.0.b1:*:*:*:*:*:*:*"
],
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "6.0.0"
},
{
"last_affected": "7.0.b1"
}
]
}