Out-of-bounds Read Affecting ImageMagick/ImageMagick package, versions [,6.9.10-68)[7.0.0-0,7.0.8-68)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Not Defined
EPSS
0.06% (31st percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-UNMANAGED-IMAGEMAGICKIMAGEMAGICK-3007756
  • published26 Jan 2022
  • disclosed8 Dec 2020
  • creditUnknown

Introduced: 8 Dec 2020

CVE-2020-25674  (opens in a new tab)
CWE-122  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade ImageMagick/ImageMagick to version 6.9.10-68, 7.0.8-68 or higher.

Overview

Affected versions of this package are vulnerable to Out-of-bounds Read. 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.

CVSS Scores

version 3.1