CVE-2021-20312: Integer Overflow
First published: Tue Apr 06 2021(Updated: )
A flaw was found in ImageMagick before version 7.0.11. A integer overflow in WriteTHUMBNAILImage of coders/thumbnail.c may trigger undefined behavior via crafted image file. Upstream patch: <a href="https://github.com/ImageMagick/ImageMagick/commit/70aa86f5d5d8aa605a918ed51f7574f433a18482">https://github.com/ImageMagick/ImageMagick/commit/70aa86f5d5d8aa605a918ed51f7574f433a18482</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/ImageMagick | <7.0.11 | 7.0.11 |
| debian/imagemagick | <=8:6.9.11.60+dfsg-1.3+deb11u3 | 8:6.9.11.60+dfsg-1.3+deb11u4 8:6.9.11.60+dfsg-1.6+deb12u2 8:6.9.11.60+dfsg-1.6+deb12u1 8:7.1.1.43+dfsg1-1 |
| ImageMagick ImageMagick | <7.0.11-0 | |
| Debian GNU/Linux | =9.0 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1946742
- https://lists.debian.org/debian-lts-announce/2021/06/msg00000.html
- https://lists.debian.org/debian-lts-announce/2023/05/msg00020.html
- https://launchpad.net/bugs/cve/CVE-2021-20312
- https://github.com/ImageMagick/ImageMagick/commit/70aa86f5d5d8aa605a918ed51f7574f433a18482
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1946743
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1946744
- https://access.redhat.com/support/policy/updates/errata/
- https://github.com/ImageMagick/ImageMagick6/commit/e53e24b078f7fa586f9cc910491b8910f5bdad2e
- https://security-tracker.debian.org/tracker/CVE-2021-20312
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20312
- https://nvd.nist.gov/vuln/detail/CVE-2021-20312
- https://ubuntu.com/security/CVE-2021-20312
Frequently Asked Questions
What is CVE-2021-20312?
CVE-2021-20312 is a vulnerability found in ImageMagick that can trigger undefined behavior via a crafted image file.
What is the severity of CVE-2021-20312?
CVE-2021-20312 has a severity rating of 7.5, which is considered high.
How does CVE-2021-20312 affect ImageMagick?
CVE-2021-20312 affects ImageMagick versions 7.0.11, where an integer overflow in WriteTHUMBNAILImage may occur.
Is there a fix for CVE-2021-20312?
Yes, a fix is available for CVE-2021-20312. It is recommended to update ImageMagick to version 8:6.9.11.60+dfsg-1.3ubuntu1 or later.
Where can I find more information about CVE-2021-20312?
More information about CVE-2021-20312 can be found on the MITRE CVE database and the Ubuntu security notices.
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