#VU17851 Input validation error in MikroTik RouterOS - CVE-2019-3924
Published: February 25, 2019 / Updated: June 17, 2021
Vulnerability identifier: #VU17851
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2019-3924
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
MikroTik RouterOS
MikroTik RouterOS
Software vendor:
MikroTik
MikroTik
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input within the Winbox service. A remote attacker can send a specially crafted request to the affected service and trigger denial of service conditions.
Successful exploitation of the vulnerability requires that the Winbox service is exposed to the attacker.
Remediation
Install updates from vendor's website.