Missing Authentication for Critical Function in Schneider Electric IGSS Update Service

1) Missing Authentication for Critical Function

EUVDB-ID: #VU81978

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4516

CWE-ID: CWE-306 - Missing Authentication for Critical Function

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to missing authentication for critical function. A remote attacker can change the update source and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

IGSS Update Service: 16.0.0.23211

External links

http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2023-255-01&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2023-255-01.pdf
http://www.cisa.gov/news-events/ics-advisories/icsa-23-285-16

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.