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Advisories

JTL Shop < 5.7.2 Server-Side Template Injection via Smarty Renderer

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severity
critical
date
Affecting

  • JTL Shop 5.2.0 <= 5.3.x, 5.4.0 <= 5.7.1

  • Remediated and backported in 5.5.4, 5.6.2, & 5.7.2

CWE
  • CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Sansec
Description
JTL Shop versions 5.2.0 through 5.7.1 contains a server-side template injection vulnerability that allows unauthenticated attackers to inject malicious template syntax due to unsanitized user-supplied input passed to the Smarty template engine. Attackers can exploit this flaw to read sensitive server-side values such as database credentials and encryption keys, and on versions 5.4.0 through 5.7.1, leverage registered Smarty modifiers including unserialize and file_get_contents to write a webshell to the web root and execute arbitrary commands as the web server user.

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