PT-2019-9013 · Phoenix Contact · Fl Switch 3Xxx+2

Evgeniy Druzhinin + 2 · Published 2019-05-06 · Updated 2019-10-09 · CVE-2018-13990

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions PHOENIX CONTACT FL SWITCH 3xxx, 4xxx, 48xx versions prior to 1.35

Description The WebUI of the affected device is susceptible to brute-force attacks due to improper restriction of excessive authentication attempts. This allows attackers to attempt numerous login combinations without significant impediment.

Recommendations For versions prior to 1.35, update to version 1.35 or later to resolve the issue. As a temporary workaround, consider restricting access to the WebUI or implementing additional authentication measures to minimize the risk of exploitation.

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2018-13990

Affected Products

Fl Switch 3Xxx

Fl Switch 48Xx

Fl Switch 4Xxx

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2018-13990 · Security Note
• https://osv.dev/vulnerability/CVE-2018-13990 · Vendor Advisory
• https://ics-cert.us-cert.gov/advisories/ICSA-19-024-02 · Note
• http://securityfocus.com/bid/106737 · Note