// For flags

CVE-2021-20224

Ubuntu Security Notice USN-5736-1

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An integer overflow issue was discovered in ImageMagick's ExportIndexQuantum() function in MagickCore/quantum-export.c. Function calls to GetPixelIndex() could result in values outside the range of representable for the 'unsigned char'. When ImageMagick processes a crafted pdf file, this could lead to an undefined behaviour or a crash.

Se ha detectado un problema de desbordamiento de enteros en la función ExportIndexQuantum() de ImageMagick en el archivo MagickCore/quantum-export.c. Las llamadas a la función GetPixelIndex() podrían resultar en valores fuera del rango representable para el "unsigned char". Cuando ImageMagick procesa un archivo pdf diseñado, esto podría conllevar a un comportamiento no definido o un bloqueo.

It was discovered that ImageMagick incorrectly handled certain values when processing PDF files. If a user or automated system using ImageMagick were tricked into opening a specially crafted PDF file, an attacker could exploit this to cause a denial of service. This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM and Ubuntu 18.04 LTS. Zhang Xiaohui discovered that ImageMagick incorrectly handled certain values when processing image data. If a user or automated system using ImageMagick were tricked into opening a specially crafted image, an attacker could exploit this to cause a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 22.10.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-12-17 CVE Reserved
  • 2022-08-25 CVE Published
  • 2024-08-03 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-190: Integer Overflow or Wraparound
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Imagemagick
Search vendor "Imagemagick"
Imagemagick
Search vendor "Imagemagick" for product "Imagemagick"
< 6.9.11-57
Search vendor "Imagemagick" for product "Imagemagick" and version " < 6.9.11-57"
-
Affected
Imagemagick
Search vendor "Imagemagick"
Imagemagick
Search vendor "Imagemagick" for product "Imagemagick"
>= 7.0.0-0 < 7.0.10-57
Search vendor "Imagemagick" for product "Imagemagick" and version " >= 7.0.0-0 < 7.0.10-57"
-
Affected