Arbitrary Code Execution Affecting concrete5/concrete5 package, versions <8.5.7


Severity

Recommended
0.0
medium
0
10

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

Threat Intelligence

EPSS
0.98% (85th percentile)

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  • Snyk IDSNYK-PHP-CONCRETE5CONCRETE5-1925024
  • published24 Nov 2021
  • disclosed23 Nov 2021
  • creditUnknown

Introduced: 23 Nov 2021

CVE-2021-22968  (opens in a new tab)
CWE-98  (opens in a new tab)

How to fix?

Upgrade concrete5/concrete5 to version 8.5.7 or higher.

Overview

concrete5/concrete5 is a concrete5 open source CMS.

Affected versions of this package are vulnerable to Arbitrary Code Execution via bypass of adding remote files in File Manager. The external file upload feature stages files in the public directory even if they have disallowed file extensions. They are stored in a directory with a random name, but it's possible to stall the uploads and brute force the directory name.

CVSS Scores

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