CVE-2022-41763

Vulnerability Description: Improper Neutralization of Directives in Dynamically Evaluated Code – CWE-95

Software Version: v9.7.05

NIST: https://nvd.nist.gov/vuln/detail/CVE-2022-41763

CVSv3: 8.8

Severity: High

Credits: Claudio Jacomelli, Sebastiano Lanzarotto, Massimiliano Brolli

An issue was discovered in NOKIA AMS 9.7.05. Remote Code Execution exists via the debugger of the ipAddress variable. A remote user, authenticated to the AMS server, could inject code in the PING function. The privileges of the command executed depend on the user that runs the service.

Step-by-step instructions and PoC

A remote user, authenticated to the AMS server, could inject code in the PING function

Affected Endpoints

·       Server: AMS

·       Function: PING Test

Below are the evidences with the vulnerability details and the payloads used.

The step to achieve the vulnerability consist in a simple modification via debugger of the ipAddress variable. This is needed because the frontend application manage to sanitize the content.

Security Impact

The vulnerability lead to execute code on the server machine in which the user is logged in. The privilege of the command executed depends on the user that run the service.