Vulnerability · Published May 23, 2024 · Assigned by zdi

CVE-2024-5227TP-Link Omada ER605 PPTP VPN username Command Injection Remote Code Execution Vulnerability

High 7.5

In plain English

A high-severity OS command injection in Omada ER605 from TP-Link. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).

Severity (CVSS 3.0)7.5High

Exploit odds (30 days)0.7%top 46.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
TP-Link	Omada ER605	2.6_2.2.2 Build 20231017

Weakness: CWE-78 · Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

ZDI-24-499 x_research-advisory