#VU85925 Improper Authentication in Emerson products - CVE-2023-51761

Vulnerability identifier: #VU85925

Vulnerability risk: Medium

CVSSv4.0: 5.2 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-51761

CWE-ID: CWE-287

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
GC370XA
Hardware solutions / Other hardware appliances
GC700XA
Hardware solutions / Other hardware appliances
GC1500XA
Hardware solutions / Other hardware appliances

Vendor: Emerson

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests. A remote attacker on the local network can bypass authentication process and gain unauthorized access to the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

GC370XA: 4.1.5

GC700XA: 4.1.5

GC1500XA: 4.1.5

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External links
https://www.cisa.gov/news-events/ics-advisories/icsa-24-030-01
https://www.emerson.com/documents/automation/security-notification-emerson-gas-chromatographs-cyber-security-notification-icsa-24-030-01-en-10103910.pdf

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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