The following code snippet illustrates the vulnerable code:
/system package update /system package install package=routeros-6.38.3.npk It is essential to restart the device after applying the patch to ensure that mikrotik routeros authentication bypass vulnerability
int auth_check(struct auth *auth, char *username, char *password) { // ... if (auth->flags & AUTH_FLAG_ALLOW_GUEST) { return 0; } // ... } The vulnerability can be exploited by sending a specially crafted request to the device, which can bypass the normal authentication checks. The following code snippet illustrates the vulnerable code:
MikroTik has released a patch for the authentication bypass vulnerability, which is available in RouterOS version 6.38.3 and later. It is essential to apply this patch as soon as possible to prevent exploitation. MikroTik has released a patch for the authentication
Once the attacker has bypassed authentication, they can access the device’s web interface, Winbox, or even access the device’s command-line interface. This provides them with a high level of control over the device, allowing them to make changes to the configuration, access sensitive data, and even install malware.
CVE-2018-14847 The vulnerability is caused by a flaw in the auth module of MikroTik RouterOS. Specifically, the vulnerability is due to a lack of proper validation of authentication requests.
The authentication bypass vulnerability in MikroTik RouterOS is a critical flaw that requires immediate attention. By applying the patch and taking additional mitigation steps, administrators can help prevent exploitation and protect their devices from unauthorized access.