Authentication bypass in Emerson DeltaV



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-19021
CWE-ID CWE-592
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 DeltaV
Hardware solutions / Firmware

Vendor Emerson

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Authorization bypass

EUVDB-ID: #VU16938

Risk: Medium

CVSSv4.0: 5.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-19021

CWE-ID: CWE-592 - Authentication Bypass Issues

Exploit availability: No

Description

The vulnerability allows an adjacent attacker to bypass authentication on the target system.

The vulnerability exists due to insufficient validation of user-supplied input. An adjacent unauthenticated attacker can supply a specially crafted script to bypass the authentication of a maintenance port of a service and cause a denial of service.

Mitigation

Install update from vendor's website.

Vulnerable software versions

DeltaV: R5.1 - 14.3

CPE2.3 External links

https://ics-cert.us-cert.gov/advisories/ICSA-19-010-01


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.



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