CVE-2020-27756

Public Exploit

Description

In ParseMetaGeometry() of MagickCore/geometry.c, image height and width calculations can lead to divide-by-zero conditions which also lead to undefined behavior. This flaw can be triggered by a crafted input file processed by ImageMagick and could impact application availability. The patch uses multiplication in addition to the function `PerceptibleReciprocal()` in order to prevent such divide-by-zero conditions. This flaw affects ImageMagick versions prior to 7.0.9-0.

References

Link	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1894233	patch exploit third party advisory issue tracking
https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html	mailing list

Frequently Asked Questions

What is the severity of CVE-2020-27756?: CVE-2020-27756 has been scored as a medium severity vulnerability.
How to fix CVE-2020-27756?: To fix CVE-2020-27756, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-27756 being actively exploited in the wild?: It is possible that CVE-2020-27756 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-27756?: CVE-2020-27756 affects n/a ImageMagick.

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Description

Category

CWE-369 – Divide By Zero

References

Frequently Asked Questions