TP-Link TL-WR841N ated_tp Command Injection Remote Code Execution Vulnerability

October 25th, 2022
ZDI-22-1466 ZDI-CAN-17356

CVE ID

CVE-2022-42433

CVSS Score

6.4 AV:A/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

TP-Link

Affected Products

TL-WR841N

Vulnerability Details

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of TP-Link TL-WR841N routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the ated_tp service. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root.

Additional Details

Fixed in firmware 220914.


Disclosure Timeline

  • 2022-07-19 - Vulnerability reported to vendor
  • 2022-10-25 - Coordinated public release of advisory

Credit

Cyrille Chatras

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