CVE-2018-18020

NameCVE-2018-18020
DescriptionIn 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qpdf (PTS)jessie5.1.2-2vulnerable
stretch6.0.0-2vulnerable
buster, sid8.2.1-1vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qpdfsource(unstable)(unfixed)medium

Notes

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

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