Vulnerability Details : CVE-2020-27756
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.
Vulnerability category: Overflow
Products affected by CVE-2020-27756
- cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*
- cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-27756
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 26 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-27756
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2020-27756
-
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.Assigned by: secalert@redhat.com (Primary)
-
The product divides a value by zero.Assigned by: secalert@redhat.com (Primary)
References for CVE-2020-27756
-
https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
[SECURITY] [DLA 3357-1] imagemagick security update
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https://bugzilla.redhat.com/show_bug.cgi?id=1894233
Exploit;Issue Tracking;Patch;Third Party Advisory
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