(Pwn2Own) TP-Link Omada ER605 Buffer Overflow Remote Code Execution Vulnerability

May 23rd, 2024
ZDI-24-502 ZDI-CAN-22523

CVE ID

CVE-2024-5243

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 names. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a 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

  • 2023-11-15 - 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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