CVE-2019-19911 Uncontrolled Resource Consumption in Pillow

High 7.5 Published Updated

An attacker can cause a denial of service in Pillow by triggering an integer overflow via a crafted image with a large number of bands.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2019-19911?

CVE-2019-19911 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 5 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

There is a DoS vulnerability in Pillow before 6.2.2 caused by FpxImagePlugin.py calling the range function on an unvalidated 32-bit integer if the number of bands is large. On Windows running 32-bit Python, this results in an OverflowError or MemoryError due to the 2 GB limit. However, on Linux running 64-bit Python this results in the process being terminated by the OOM killer.

Weakness: CWE-190

Which versions are affected by CVE-2019-19911?

3 open source packages ship an affected version, including pillow. It affects 4 products.

PackageAffectedFixed in
pillow PyPIAll versions6.2.2
pillow PyPIAll versions6.2.2
pillow PyPIAll versions6.2.2

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Python Pillow.

How do I fix CVE-2019-19911?

Upgrade pillow to 6.2.2 or later.

Is CVE-2019-19911 being exploited?

There is no known exploitation of CVE-2019-19911 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as ALPINE-CVE-2019-19911, DEBIAN-CVE-2019-19911, GHSA-5gm3-px64-rw72, PYSEC-2020-172, UBUNTU-CVE-2019-19911.

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