Uncontrolled Recursion Affecting qpdf package, versions <8.0.2-3~16.04.1+esm1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1604-QPDF-1190221
- published28 Jul 2021
- disclosed6 Oct 2018
Introduced: 6 Oct 2018
CVE-2018-18020 (opens in a new tab)How to fix?
Upgrade Ubuntu:16.04 qpdf to version 8.0.2-3~16.04.1+esm1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qpdf package and not the qpdf package as distributed by Ubuntu.
See How to fix? for Ubuntu:16.04 relevant fixed versions and status.
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.