Vulnerability identifier: #VU52990

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-20237

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MikroTik RouterOS
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: MikroTik

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the sniffer process. A remote authenticated user can pass specially crafted data to the system, trigger invalid memory access and crash the affected process.

Mitigation
Install update from vendor's website.

Vulnerable software versions

MikroTik RouterOS: 6.48 - 6.48.2, 6.47 - 6.47.9, 6.46.3 - 6.46.8

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External links
http://seclists.org/fulldisclosure/2021/May/15

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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