CVE-2018-18020

Public Exploit

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.

Category

3.3
CVSS
Severity: Low
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.11%
Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/qpdf/qpdf/issues/243 third party advisory issue tracking exploit
https://lists.debian.org/debian-lts-announce/2023/08/msg00037.html mailing list

Frequently Asked Questions

What is the severity of CVE-2018-18020?
CVE-2018-18020 has been scored as a low severity vulnerability.
How to fix CVE-2018-18020?
To fix CVE-2018-18020, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-18020 being actively exploited in the wild?
It is possible that CVE-2018-18020 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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