Denial of service in Rockwell Automation Stratix Devices Containing Cisco IOS

1) State Issues

EUVDB-ID: #VU68873

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-3200

CWE-ID: CWE-371 - State Issues

Exploit availability: No

Description

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

The vulnerability exists due to an internal state not being represented correctly in the Secure Shell (SSH) server. A remote user can create an SSH connection to an affected device and cause a denial of service condition.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Allen-Bradley Stratix 5400 Industrial Ethernet Switches: before 15.2(7)E2

Allen-Bradley Stratix 5410 Industrial Distribution Switches: before 15.2(7)E2

External links

http://ics-cert.us-cert.gov/advisories/icsa-22-300-03

Q & A

Can this vulnerability be exploited remotely?

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

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.