CVE-2018-18020

Name	CVE-2018-18020
Description	In QPDF 8.2.1, in libqpdf/QPDFWriter.cc, QPDFWriter::unparseObject and QPDFWriter::unparseChild have recursive calls for a long time, which allows remote attackers to cause a denial of service via a crafted PDF file.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3548-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
qpdf (PTS)	bullseye	10.1.0-1	fixed
	bookworm	11.3.0-1+deb12u1	fixed
	sid, trixie	11.9.1-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
qpdf	source	buster	8.4.0-2+deb10u1		DLA-3548-1
qpdf	source	(unstable)	9.0.0-1

Notes

[stretch] - qpdf <no-dsa> (Minor issue)
[jessie] - qpdf <no-dsa> (Minor issue)
https://github.com/qpdf/qpdf/issues/243
https://github.com/qpdf/qpdf/commit/cf469d789024cdda41684f1ea48b41829b98c242