Zero Day Initiative AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Zero Day Initiative CWE-78

TP-Link Omada ER605 PPTP VPN username Command Injection Remote Code Execution Vulnerability. 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 only vulnerable if configured to use a PPTP VPN with LDAP authentication.

The specific flaw exists within the handling of the username parameter provided to the /usr/bin/pppd endpoint. 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. Was ZDI-CAN-22446.

Zero Day Initiative https://www.zerodayinitiative.com/advisories/ZDI-24-499/ [No types assigned]