Advisory Details

May 23rd, 2024

(Pwn2Own) TP-Link Omada ER605 Comexe DDNS Response Handling Heap-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2024-5228
CVSS SCORE	7.5, AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	TP-Link
AFFECTED PRODUCTS	Omada ER605
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to execute arbitrary code 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 handling of DNS responses. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute 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	2023-11-09 - Vulnerability reported to vendor 2024-05-23 - Coordinated public release of advisory 2024-07-01 - Advisory Updated
CREDIT	@vcslab

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