CVE-2021-39212: Issue when Configuring the ImageMagick Security Policy
First published: Mon Sep 13 2021(Updated: )
ImageMagick is free software delivered as a ready-to-run binary distribution or as source code that you may use, copy, modify, and distribute in both open and proprietary applications. In affected versions and in certain cases, Postscript files could be read and written when specifically excluded by a `module` policy in `policy.xml`. ex. <policy domain="module" rights="none" pattern="PS" />. The issue has been resolved in ImageMagick 7.1.0-7 and in 6.9.12-22. Fortunately, in the wild, few users utilize the `module` policy and instead use the `coder` policy that is also our workaround recommendation: <policy domain="coder" rights="none" pattern="{PS,EPI,EPS,EPSF,EPSI}" />.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/imagemagick | 8:6.9.11.60+dfsg-1.3+deb11u4 8:6.9.11.60+dfsg-1.3+deb11u3 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 | >=6.9.12-0<6.9.12-22 | |
| ImageMagick | >=7.1.0-0<7.1.0-7 |
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Reference Links
- https://github.com/ImageMagick/ImageMagick/commit/01faddbe2711a4156180c4a92837e2f23683cc68
- https://github.com/ImageMagick/ImageMagick/commit/35893e7cad78ce461fcaffa56076c11700ba5e4e
- https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-qvhr-jj4p-j2qr
- https://lists.debian.org/debian-lts-announce/2023/05/msg00020.html
- https://launchpad.net/bugs/cve/CVE-2021-39212
- https://github.com/ImageMagick/ImageMagick6/commit/8cd2fcd33460826628a7590dc3ce74d7785e1598
- https://github.com/ImageMagick/ImageMagick6/commit/69ea5587de17ef89476be47a3cb7f855c0355a74
- https://github.com/ImageMagick/ImageMagick6/commit/b60e17133b982d28816386b83174c2bc06dd39bd
- https://github.com/ImageMagick/ImageMagick6/commit/428e68597fa904d0bdc133d878e12acd7dc60fa3
- https://security-tracker.debian.org/tracker/CVE-2021-39212
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39212
- https://nvd.nist.gov/vuln/detail/CVE-2021-39212
- https://ubuntu.com/security/CVE-2021-39212
Frequently Asked Questions
What is CVE-2021-39212?
CVE-2021-39212 is a vulnerability in ImageMagick that allows certain cases of reading and writing Postscript files that should be excluded.
What is the severity of CVE-2021-39212?
CVE-2021-39212 has a severity rating of medium, with a CVSS score of 3.6.
Which versions of ImageMagick are affected by CVE-2021-39212?
CVE-2021-39212 affects versions up to and including 6.9.12-22 and 7.1.0-7 of ImageMagick.
How can I fix CVE-2021-39212?
To fix CVE-2021-39212, update ImageMagick to version 6.9.10.23+dfsg-2.1ubuntu11.9, 8:6.9.11.60+dfsg-1.3ubuntu0.22.10.1, 8:6.9.11.60+dfsg-1.3ubuntu1, 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.3+, or 8:6.9.11.60+dfsg-1.3ubuntu1.
Where can I find more information about CVE-2021-39212?
You can find more information about CVE-2021-39212 in the following references: [cve.mitre.org](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39212), [github.com](https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-qvhr-jj4p-j2qr), [ubuntu.com](https://ubuntu.com/security/notices/USN-5736-1).
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