CVE-2021-20224 Integer overflow in ImageMagick
An integer overflow in ImageMagick allows attackers to cause a crash or undefined behavior via a crafted PDF file.
- 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-2021-20224?
CVE-2021-20224 is a medium-severity vulnerability in Imagemagick Imagemagick, published on 25 Aug 2022. 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 integer overflow issue was discovered in ImageMagick's ExportIndexQuantum() function in MagickCore/quantum-export.c. Function calls to GetPixelIndex() could result in values outside the range of representable for the 'unsigned char'. When ImageMagick processes a crafted pdf file, this could lead to an undefined behaviour or a crash.
Weakness: CWE-190
Which versions are affected by CVE-2021-20224?
It affects 1 product.
Linux distribution packages (4)
ImageMagick SUSE:Linux Enterprise Server 12 SP5 | All versions | 6.8.8.1-71.180.1 |
ImageMagick SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 6.8.8.1-71.180.1 |
ImageMagick SUSE:Linux Enterprise Software Development Kit 12 SP5 | All versions | 6.8.8.1-71.180.1 |
ImageMagick SUSE:Linux Enterprise Workstation Extension 12 SP5 | All versions | 6.8.8.1-71.180.1 |
Products include Imagemagick Imagemagick.
How do I fix CVE-2021-20224?
Apply the vendor's patch.
Is CVE-2021-20224 being exploited?
There is no known exploitation of CVE-2021-20224 in the wild and no public exploit code.
Other vulnerabilities in Imagemagick Imagemagick
Sources
Also known as CLSA-2022-1670518357, DEBIAN-CVE-2021-20224, GHSA-ccpc-2gr7-q87w, JLSEC-2026-878, SUSE-SU-2022:3138-1, UBUNTU-CVE-2021-20224.