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Advisories

Vvveb before 1.0.9.0 RCE via .phar Extension Denylist Bypass in Media Upload

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Severity
critical
Date
Affecting

  • Vvveb >= 0, < 1.0.9.0

CWE
  • CWE-434 Unrestricted Upload of File with Dangerous Type
CVSS
9.4
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Credit
JosanGeorge
Description
Vvveb before 1.0.9.0 contains a denylist bypass in system/traits/media.php where '.phar' is misconfigured with a leading dot, allowing authenticated administrators to upload .phar PHP files. Attackers can upload a GIF magic-byte polyglot webshell bypassing binary inspection and execute arbitrary OS commands as the web-server user.

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