CVE-2021-20240 Integer overflow in gdk-pixbuf

What is CVE-2021-20240?

CVE-2021-20240 is a high-severity vulnerability in Fedoraproject Fedora, published on 28 May 2021. 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

A flaw was found in gdk-pixbuf in versions before 2.42.0. An integer wraparound leading to an out of bounds write can occur when a crafted GIF image is loaded. An attacker may cause applications to crash or could potentially execute code on the victim system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Weakness: CWE-191

Which versions are affected by CVE-2021-20240?

It affects 2 products.

Products include Fedoraproject Fedora, Gnome Gdk-Pixbuf.

How do I fix CVE-2021-20240?

Upgrade to a fixed version.

Is CVE-2021-20240 being exploited?

There is no known exploitation of CVE-2021-20240 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 ALPINE-CVE-2021-20240, DEBIAN-CVE-2021-20240, GHSA-cjqx-m2ff-vgj5, UBUNTU-CVE-2021-20240, USN-4743-1.