Denial of service in WAGO 750 Controllers FTP server

1) Resource exhaustion

EUVDB-ID: #VU68283

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-38371

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources in the FTP server. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website once available.

Vulnerable software versions

WAGO PLC Series 750-893: All versions

WAGO PLC Series 750-891: All versions

WAGO PLC Series 750-890: All versions

WAGO PLC Series 750-885: All versions

WAGO PLC Series 750-882: All versions

WAGO PLC Series 750-862: All versions

WAGO PLC Series 750-832: All versions

WAGO PLC Series 750-829: All versions

WAGO PLC Series 750-823: All versions

WAGO PLC Series 750-365: All versions

WAGO PLC Series 750-364: All versions

WAGO PLC Series 750-363: All versions

WAGO PLC Series 750-362: All versions

WAGO PLC Series 750-332: All versions

WAGO PLC Series 750-330: All versions

WAGO PLC Series 750-889: All versions

WAGO PLC Series 750-881: All versions

WAGO PLC Series 750-880: All versions

WAGO PLC Series 750-852: All versions

WAGO PLC Series 750-831: All versions

WAGO PLC Series 750-352: All versions

External links

http://ics-cert.kaspersky.com/advisories/2022/10/12/wago-750-controllers-denial-of-service-of-the-ftp-server/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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