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CRITICAL9.1

GHSA-3jxh-6635-6jwp

Path traversal in Concrete CMS

Quick fix

GHSA-3jxh-6635-6jwp — concrete5/core: upgrade to the fixed version with the command below.

composer require concrete5/core:^9.1.0

Details

Concrete 8.5.7 and below as well as Concrete 9.0 through 9.0.2 allow traversal in /index.php/ccm/system/file/upload which could result in an Arbitrary File Delete exploit. This was remediated by sanitizing /index.php/ccm/system/file/upload to ensure Concrete doesn’t allow traversal and by changing isFullChunkFilePresent to have an early false return when input doesn't match expectations.Concrete CMS Security team ranked this 5.8 with CVSS v3.1 vector AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H. Credit to Siebene for reporting.

Are you affected?

Enter the version of the package you're using.

Affected packages

Packagist/concrete5/core
Introduced in: 9.0.0Fixed in: 9.1.0
Fixcomposer require concrete5/core:^9.1.0
Packagist/concrete5/core
Introduced in: 0Fixed in: 8.5.8
Fixcomposer require concrete5/core:^8.5.8

References