CVE-2017-18183 Denial of service in n/a

Medium 5.5 Published 13 Feb 2018 Updated 5 Aug 2024

An attacker can cause a denial of service via an infinite loop in the QPDF library's object writing function.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2017-18183?

CVE-2017-18183 is a medium-severity denial of service vulnerability in n/a, published on 13 Feb 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

An issue was discovered in QPDF before 7.0.0. There is an infinite loop in the QPDFWriter::enqueueObject() function in libqpdf/QPDFWriter.cc.

Weakness: CWE-835

Which versions are affected by CVE-2017-18183?

It affects 1 product.

Products include Qpdf Project Qpdf.

How do I fix CVE-2017-18183?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2017-18183 being exploited?

There is no known exploitation of CVE-2017-18183 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2017-18183, GHSA-c873-f884-8r22, UBUNTU-CVE-2017-18183.