Advisories

Vvveb through 1.0.8.6 Webshell Upload via Theme Installer validFile() Bypass

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Severity
critical
Date
Affecting
  • Vvveb <= 1.0.8.6

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
de3erve-hunter
Description
Vvveb through 1.0.8.6 contains a file upload vulnerability in the theme installer validFile() function that uses strpos() instead of strict path matching. Attackers with admin credentials can upload a ZIP containing a PHP file whose path includes /theme.php to achieve remote code execution on nginx deployments.

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