Advisory Details

October 25th, 2022

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

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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