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GHSA-cvv5-9h9w-qp2m
No affected components available
Summary
The SSID is not sanitized when before it is passed as a parameter to cmd.exe in the getWindowsIEEE8021x function. This means that malicious content in the SSID can be executed as OS commands.
Details
I have exploited this vulnerability in a Windows service using version 5.22.11 of the module, to escalate privileges (in an environment where I am authorized to do so). However, as far as I can see from the code, it is still present in master branch at time of writing, on line 403/404 of network.js.
The SSID is obtained from netsh wlan show interface ... in getWindowsWirelessIfaceSSID, and then passed to cmd.exe /d /s /c "netsh wlan show profiles ... in getWindowsIEEE8021x, without sanitization.
PoC
First, the command injection payload should be included in the connected Wi-Fi SSID. For example create hotspot on mobile phone or other laptop, set SSID to payload, connect to it with victim Windows system. Two example SSID's to demonstrate exploitation are below.
Demonstration to run ping command indefinitely:
a" | ping /t 127.0.0.1 &
Run executable with privileges of the user in which vulnerable function is executed. Chosen executable should should be placed in (assuming system drive is C): C:\a\a.exe.
a" | %SystemDrive%\a\a.exe &
Then, the vulnerable function can be executed on the victim system, for example, using:
const si = require('systeminformation');
si.networkInterfaces((net) => { console.log(net) });
Now the chosen command, PING.exe or a.exe will be run through the cmd.exe command line.
Impact
This vulnerability may enable an attacker, depending on how the package is used, to perform remote code execution or local privilege escalation.
The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. The attacker needs the user to perform some action, like clicking a link. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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