Vulnerability Details : CVE-2020-27764
In /MagickCore/statistic.c, there are several areas in ApplyEvaluateOperator() where a size_t cast should have been a ssize_t cast, which causes out-of-range values under some circumstances when a crafted input file is processed by ImageMagick. Red Hat Product Security marked this as Low severity because although it could potentially lead to an impact to application availability, no specific impact was shown in this case. This flaw affects ImageMagick versions prior to 6.9.10-69.
Vulnerability category: Overflow
Products affected by CVE-2020-27764
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-27764
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 34 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-27764
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 | |
3.3
|
LOW | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
1.8
|
1.4
|
NIST |
CWE ids for CVE-2020-27764
-
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:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2020-27764
-
https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
[SECURITY] [DLA 3357-1] imagemagick security update
-
https://bugzilla.redhat.com/show_bug.cgi?id=1894683
1894683 – (CVE-2020-27764) CVE-2020-27764 ImageMagick: outside the range of representable values of type 'unsigned long' at MagickCore/statistic.cIssue Tracking;Patch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/03/msg00030.html
[SECURITY] [DLA 2602-1] imagemagick security updateMailing List;Third Party Advisory
-
https://github.com/ImageMagick/ImageMagick6/commit/3e21bc8a58b4ae38d24c7e283837cc279f35b6a5
https://github.com/ImageMagick/ImageMagick/issues/1735 · ImageMagick/ImageMagick6@3e21bc8 · GitHubPatch;Third Party Advisory
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