#VU46736 Improper Validation of Array Index in MikroTik RouterOS - CVE-2020-11881
Published: September 14, 2020 / Updated: September 21, 2020
Vulnerability identifier: #VU46736
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2020-11881
CWE-ID: CWE-129
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 denial of service attack.
The vulnerability exists due to improper validation of array index when processing setup-requests in a built-in SMB server. A remote non-authenticated attacker can send specially crafted setup-request packets and crash the SMB server.
Remediation
Install updates from vendor's website.