CVE-2020-27766: Integer Overflow
First published: Wed Nov 04 2020(Updated: )
A flaw was found in ImageMagick in MagickCore/statistic.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of values outside the range of type `unsigned long`. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior. This flaw affects ImageMagick versions prior to 7.0.8-69.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/ImageMagick 7.0.8 | <69 | 69 |
| 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 ImageMagick | <6.9.10-69 | |
| ImageMagick ImageMagick | >=7.0.0-0<7.0.8-69 | |
| Debian GNU/Linux | =9.0 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1894686
- https://lists.debian.org/debian-lts-announce/2021/03/msg00030.html
- https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
- https://launchpad.net/bugs/cve/CVE-2020-27766
- https://github.com/ImageMagick/ImageMagick/issues/1734
- https://access.redhat.com/support/policy/updates/errata
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1901277
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1901278
- https://access.redhat.com/security/cve/cve-2020-27766
- https://github.com/ImageMagick/ImageMagick/commit/29cee9152d1b5487cfd19443ca48935eea0cabe2
- https://github.com/ImageMagick/ImageMagick6/commit/052175e4b190598141fbcc64641cd5ee4db3602d
- https://security-tracker.debian.org/tracker/CVE-2020-27766
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27766
- https://nvd.nist.gov/vuln/detail/CVE-2020-27766
- https://ubuntu.com/security/CVE-2020-27766
Frequently Asked Questions
What is the severity of CVE-2020-27766?
The severity of CVE-2020-27766 is high with a score of 7.8.
How does CVE-2020-27766 affect ImageMagick?
CVE-2020-27766 affects ImageMagick by allowing an attacker to trigger undefined behavior.
What is the impacted software for CVE-2020-27766?
The impacted software for CVE-2020-27766 includes various versions of ImageMagick on Ubuntu and Debian.
How can I fix CVE-2020-27766?
To fix CVE-2020-27766, update ImageMagick to the prescribed versions provided in the Ubuntu or Debian security notices.
Where can I find more information about CVE-2020-27766?
More information about CVE-2020-27766 can be found in the MITRE CVE database as well as the Ubuntu and Debian security notices.
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