Authentication bypass in Mikrotik RouterOS



Published: 2020-01-29
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE ID N/A
CWE ID CWE-287
Exploitation vector Local network
Public exploit N/A
Vulnerable software
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MikroTik RouterOS
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor MikroTik

Security Advisory

This security advisory describes one low risk vulnerability.

1) Improper Authentication

Risk: Low

CVSSv3: 6.5 [CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: N/A

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error when loading default router configuration for routers with default admin password and Wireless Wire enabled. A remote attacker on the local network can login with admin account and empty password before the default configuration is fully loaded.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MikroTik RouterOS: 6.45, 6.45.1, 6.45.2, 6.45.3, 6.45.4, 6.45.5, 6.45.6, 6.45.7, 6.46, 6.46.1

CPE External links

https://mikrotik.com/download/changelogs/long-term-release-tree#6.45.8

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.