Advisory Details

May 23rd, 2024

(Pwn2Own) TP-Link Omada ER605 Reliance on Security Through Obscurity Vulnerability

ZDI-24-503
ZDI-CAN-22439

CVE ID CVE-2024-5244
CVSS SCORE 5.0, AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
AFFECTED VENDORS TP-Link
AFFECTED PRODUCTS Omada ER605
VULNERABILITY DETAILS

This vulnerability allows network-adjacent attackers to access or spoof DDNS messages on affected installations of TP-Link Omada ER605 routers. Authentication is not required to exploit this vulnerability. However, devices are vulnerable only if configured to use the Comexe DDNS service.

The specific flaw exists within the cmxddnsd executable. The issue results from reliance on obscurity to secure network data. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root.

ADDITIONAL DETAILS

Fixed in firmware ER605 (UN) _V2_2. 2.4 Build 20240119
https://www.tp-link.com/en/support/download/er605/#Firmware


DISCLOSURE TIMELINE
  • 2023-11-15 - Vulnerability reported to vendor
  • 2024-05-23 - Coordinated public release of advisory
CREDIT Claroty Research - Team82 - Uri Katz, Noam Moshe, Tomer Goldschmidt, Sharon Brizinov
BACK TO ADVISORIES