CVE-2021-20176: Divide by Zero
First published: Fri Jan 15 2021(Updated: )
A divide-by-zero flaw was found in ImageMagick 6.9.11-57 and 7.0.10-57 in gem.c. This flaw allows an attacker who submits a crafted file that is processed by ImageMagick to trigger undefined behavior through a division by zero. The highest threat from this vulnerability is to system availability.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| ImageMagick ImageMagick | <6.9.11-57 | |
| ImageMagick ImageMagick | >=7.0.0-0<7.0.10-56 | |
| Debian Debian Linux | =9.0 | |
| redhat/ImageMagick 6.9.11 | <57 | 57 |
| redhat/ImageMagick 7.0.10 | <57 | 57 |
| 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=1916610
- https://lists.debian.org/debian-lts-announce/2021/03/msg00030.html
- https://lists.debian.org/debian-lts-announce/2023/05/msg00020.html
- https://launchpad.net/bugs/cve/CVE-2021-20176
- https://github.com/ImageMagick/ImageMagick/issues/3077
- https://github.com/ImageMagick/ImageMagick/commit/fbd9a963db1ae5551c45dc8af57db0abd7695774
- https://github.com/ImageMagick/ImageMagick6/commit/90255f0834eead08d59f46b0bda7b1580451cc0f
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1920270
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1916611
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1925097
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1925096
- https://github.com/ImageMagick/ImageMagick/commit/9c06496defe3e28e90da780f09baeb40f7d496ae
- https://github.com/ImageMagick/ImageMagick6/commit/d348259b3bffa12d6aeb308fffd6e572c4d62786
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1928957
- https://github.com/ImageMagick/ImageMagick/pull/3192
- https://security-tracker.debian.org/tracker/CVE-2021-20176
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20176
- https://nvd.nist.gov/vuln/detail/CVE-2021-20176
- https://ubuntu.com/security/CVE-2021-20176
Frequently Asked Questions
What is CVE-2021-20176?
CVE-2021-20176 is a divide-by-zero vulnerability found in ImageMagick 6.9.11-57 and 7.0.10-57.
How does CVE-2021-20176 impact system availability?
CVE-2021-20176 can cause system unavailability.
What is the severity of CVE-2021-20176?
The severity of CVE-2021-20176 is medium with a severity value of 5.5.
Which software versions are affected by CVE-2021-20176?
ImageMagick versions 6.9.11-57 and 7.0.10-57 are affected by CVE-2021-20176.
How can I fix CVE-2021-20176?
To fix CVE-2021-20176, update ImageMagick to a version that includes the fix.
- collector/nvd-index
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- agent/author
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2021-20176
- agent/software-canonical-lookup
- agent/severity
- agent/remedy
- agent/weakness
- collector/mitre-cve
- source/MITRE
- collector/usn-cve
- source/Ubuntu
- agent/references
- agent/tags
- agent/description
- agent/event
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/nvd-cve
- source/NVD
- agent/last-modified-date
- 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