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CVE-2021-20224

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Date: August 25, 2022

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.

Language: C

Severity Score

Related Resources (9)

https://people.canonical.com/~ubuntu-security/cve/CVE-2021-20224
https://github.com/ImageMagick/ImageMagick/pull/3083
https://github.com/ImageMagick/ImageMagick6/commit/553054c1cb1e4e05ec86237afef76a32cd7c464d
https://security-tracker.debian.org/tracker/CVE-2021-20224
https://nvd.nist.gov/vuln/detail/CVE-2021-20224
https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
https://github.com/ImageMagick/ImageMagick/commit/5af1dffa4b6ab984b5f13d1e91c95760d75f12a6
https://access.redhat.com/security/cve/CVE-2021-20224
https://www.mend.io/vulnerability-database/CVE-2021-20224

Severity Score

Weakness Type (CWE)

Integer Overflow or Wraparound

CWE-190

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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