Advisory Details

May 23rd, 2024

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

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 2024-07-01 - Advisory Updated
CREDIT	Claroty Research - Team82 - Uri Katz, Noam Moshe, Tomer Goldschmidt, Sharon Brizinov

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