CVE-2019-16865 DOS attack in Pillow when processing specially crafted image files

What is CVE-2019-16865?

CVE-2019-16865 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 4 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Pillow before 6.2.0. When reading specially crafted invalid image files, the library can either allocate very large amounts of memory or take an extremely long period of time to process the image.

Weakness: CWE-770

Which versions are affected by CVE-2019-16865?

3 open source packages ship an affected version, including pillow. It affects 2 products.

Products include Fedoraproject Fedora, Python Pillow.

How do I fix CVE-2019-16865?

Upgrade pillow to 6.2.0 or later.

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-2019-16865 being exploited?

There is no known exploitation of CVE-2019-16865 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2019-16865, GHSA-j7mj-748x-7p78, PYSEC-2019-110, UBUNTU-CVE-2019-16865.