Vulnerability Details : CVE-2020-27761

WritePALMImage() in /coders/palm.c used size_t casts in several areas of a calculation which could lead to values outside the range of representable type `unsigned long` undefined behavior when a crafted input file was processed by ImageMagick. The patch casts to `ssize_t` instead to avoid this issue. Red Hat Product Security marked the Severity as Low 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 ImageMagick 7.0.9-0.
Published 2020-12-03 17:15:13
Updated 2023-03-11 23:15:13
Source Red Hat, Inc.
View at NVD,   CVE.org
Vulnerability category: Overflow

Products affected by CVE-2020-27761

Exploit prediction scoring system (EPSS) score for CVE-2020-27761

EPSS FAQ
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-2020-27761

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-2020-27761

  • 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-2020-27761

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