Vulnerability Details : CVE-2020-25674
WriteOnePNGImage() from coders/png.c (the PNG coder) has a for loop with an improper exit condition that can allow an out-of-bounds READ via heap-buffer-overflow. This occurs because it is possible for the colormap to have less than 256 valid values but the loop condition will loop 256 times, attempting to pass invalid colormap data to the event logger. The patch replaces the hardcoded 256 value with a call to MagickMin() to ensure the proper value is used. This could impact application availability when a specially crafted input file is processed by ImageMagick. This flaw affects ImageMagick versions prior to 7.0.8-68.
Vulnerability category: Overflow
Products affected by CVE-2020-25674
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*
- cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-25674
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 30 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-25674
| 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-2020-25674
-
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().Assigned by: secalert@redhat.com (Primary)
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: secalert@redhat.com (Primary)
References for CVE-2020-25674
-
https://lists.debian.org/debian-lts-announce/2021/01/msg00010.html
[SECURITY] [DLA 2523-1] imagemagick security updateMailing List;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1891928
Exploit;Issue Tracking;Patch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
[SECURITY] [DLA 3357-1] imagemagick security update
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