CVE-2018-20797 Denial of service in n/a

Medium 6.5 Published 27 Feb 2019 Updated 5 Aug 2024

An attacker can cause a denial of service via excessive memory allocation in the PoDoFo PDF library when processing crafted files.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2018-20797?

CVE-2018-20797 is a medium-severity denial of service vulnerability in Podofo Project Podofo, published on 27 Feb 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

An issue was discovered in PoDoFo 0.9.6. There is an attempted excessive memory allocation in PoDoFo::podofo_calloc in base/PdfMemoryManagement.cpp when called from PoDoFo::PdfPredictorDecoder::PdfPredictorDecoder in base/PdfFiltersPrivate.cpp.

Weakness: CWE-119

Which versions are affected by CVE-2018-20797?

It affects 1 product.

Linux distribution packages (1)

podofo openSUSE:Tumbleweed All versions 0.9.8-1.1

Products include Podofo Project Podofo.

How do I fix CVE-2018-20797?

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-2018-20797 being exploited?

There is no known exploitation of CVE-2018-20797 in the wild and no public exploit code.

All Podofo Project Podofo vulnerabilities

Sources

Also known as DEBIAN-CVE-2018-20797, GHSA-f2r9-m844-g6h4, UBUNTU-CVE-2018-20797, openSUSE-SU-2024:12049-1.