What is CVE-2021-20311?

CVE-2021-20311 is a high-severity vulnerability in Imagemagick, classified under Divide By Zero. CVSS score: 7.5/10. Published 2021-05-11.

How severe is CVE-2021-20311?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2021-20311 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Imagemagick

CVE-2021-20311

A flaw was found in ImageMagick in versions before 7.0.11, where a division by zero in sRGBTransformImage() in the MagickCore/colorspace.c may trigger undefined behavior via a crafted image file that is submitted by an attacker processed by an application using ImageMagick. The highest threat from this vulnerability is to system availability.

EPSS: 0.013 (66.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Imagemagick
N/a Imagemagick — versions ImageMagick 7.0.11

Weakness classification (CWE)

CWE-369 — Divide By Zero

Public proof-of-concept exploits

11notes/docker-paperless-ngx

References

secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2021-20311?: CVE-2021-20311 is a high-severity vulnerability in Imagemagick, classified under Divide By Zero. CVSS score: 7.5/10. Published 2021-05-11.
How severe is CVE-2021-20311?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-20311 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.