Vulnerability in Imagemagick
CVE-2020-27760
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.
EPSS: 0.014 (69.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Imagemagick
- Debian Debian_linux — versions 9.0
- N/a Imagemagick — versions ImageMagick 7.0.8-68
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (mailing-list, Mailing List, Third Party Advisory)
- secalert@redhat.com (mailing-list)
Frequently asked questions
- What is CVE-2020-27760?
- CVE-2020-27760 is a medium-severity vulnerability in Imagemagick, classified under Divide By Zero. CVSS score: 5.5/10. Published 2020-12-03.
- How severe is CVE-2020-27760?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2020-27760 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.