CVE-2020-27760: Divide by Zero
First published: Tue Nov 03 2020(Updated: )
In `GammaImage()` of /MagickCore/enhance.c, depending on the `gamma` value, it's possible to trigger a divide-by-zero condition when a crafted input file is processed by ImageMagick. This could lead to an impact to application availability. The patch uses the `PerceptibleReciprocal()` to prevent the divide-by-zero from occurring. This flaw affects ImageMagick versions prior to ImageMagick 7.0.8-68.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ImageMagick ImageMagick | <6.9.10-68 | |
| ImageMagick ImageMagick | >=7.0.0-0<7.0.8-68 | |
| Debian Debian Linux | =9.0 | |
| redhat/ImageMagick 7.0.8 | <68 | 68 |
| 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 8:7.1.1.39+dfsg1-3 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1894239
- https://lists.debian.org/debian-lts-announce/2021/01/msg00010.html
- https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
- https://launchpad.net/bugs/cve/CVE-2020-27760
- https://github.com/ImageMagick/ImageMagick/issues/1717
- https://github.com/ImageMagick/ImageMagick/commit/c5fcdea6a6ae27cf3db20c28b176e87b1a584e06
- https://access.redhat.com/support/policy/updates/errata
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1901265
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1901266
- https://access.redhat.com/security/cve/cve-2020-27760
- https://github.com/ImageMagick/ImageMagick6/commit/83cd04f580ccf4cc194813777c1fcfba78e602aa
- https://security-tracker.debian.org/tracker/CVE-2020-27760
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27760
- https://nvd.nist.gov/vuln/detail/CVE-2020-27760
- https://ubuntu.com/security/CVE-2020-27760
Frequently Asked Questions
What is CVE-2020-27760?
CVE-2020-27760 is a vulnerability in ImageMagick that allows for a divide-by-zero condition when processing a crafted input file.
How does CVE-2020-27760 impact application availability?
CVE-2020-27760 could lead to an impact on application availability due to the divide-by-zero condition.
What is the severity of CVE-2020-27760?
CVE-2020-27760 has a severity rating of medium with a CVSS score of 5.5.
Which versions of ImageMagick are affected by CVE-2020-27760?
Versions 6.8.9.9-7ubuntu5.16+ to 6.9.11.24+dfsg-1 of ImageMagick are affected by CVE-2020-27760.
How do I fix the CVE-2020-27760 vulnerability?
To fix the CVE-2020-27760 vulnerability, update ImageMagick to version 6.9.11.24+dfsg-1 or higher.
- collector/nvd-index
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2020-27760
- agent/software-canonical-lookup
- agent/weakness
- agent/severity
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/remedy
- agent/tags
- collector/usn-cve
- source/Ubuntu
- agent/description
- agent/event
- collector/nvd-cve
- source/NVD
- agent/last-modified-date
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/trending
- vendor/imagemagick
- canonical/imagemagick imagemagick
- version/imagemagick imagemagick/7.0.0-0
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0
- package-manager/redhat
- package-manager/debian