Vulnerability identifier: #VU10010

Vulnerability risk: Low

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-16743

CWE-ID: CWE-285

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FL SWITCH 4000T-8POE-2SFP-R
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 3012E-2FX SM
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 4800E-24FX SM-4GC
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 4800E-24FX-4GC
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 4824E-4GC
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 4012T-2GT-2FX ST
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 4012T 2GT 2FX
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 4808E-16FX SM LC-4GC
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 4808E-16FX-4GC
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 4808E-16FX ST-4GC
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 4808E-16FX SM ST-4GC
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 4808E-16FX SM-4GC
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 4808E-16FX LC-4GC
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 4008T-2GT-3FX SM
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 4008T-2GT-4FX SM
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 4008T-2SFP
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 3006T-2FX SM
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 3016T
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 3016
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 3016E
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 3012E-2SFX
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 3006T-2FX ST
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 3006T-2FX
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 3008T
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 3008
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 3004T-FX ST
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 3004T-FX
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 3005T
Hardware solutions / Routers & switches, VoIP, GSM, etc
FL SWITCH 3005
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Phoenix Contact GmbH

Description
The vulnerability allows a remote attacker to gain elevated privileges.

The weakness exists due to improper authorization. A remote attacker can send a specially crafted HTTP request, bypass authentication and gain administrative privileges on the target device.

Mitigation
Update to version 1.33.

Vulnerable software versions

FL SWITCH 4000T-8POE-2SFP-R: All versions

FL SWITCH 3012E-2FX SM: All versions

FL SWITCH 4800E-24FX SM-4GC: All versions

FL SWITCH 4800E-24FX-4GC: All versions

FL SWITCH 4824E-4GC: All versions

FL SWITCH 4012T-2GT-2FX ST: All versions

FL SWITCH 4012T 2GT 2FX: All versions

FL SWITCH 4808E-16FX SM LC-4GC: All versions

FL SWITCH 4808E-16FX-4GC: All versions

FL SWITCH 4808E-16FX ST-4GC: All versions

FL SWITCH 4808E-16FX SM ST-4GC: All versions

FL SWITCH 4808E-16FX SM-4GC: All versions

FL SWITCH 4808E-16FX LC-4GC: All versions

FL SWITCH 4008T-2GT-3FX SM: All versions

FL SWITCH 4008T-2GT-4FX SM: All versions

FL SWITCH 4008T-2SFP: All versions

FL SWITCH 3006T-2FX SM: All versions

FL SWITCH 3016T: All versions

FL SWITCH 3016: All versions

FL SWITCH 3016E: All versions

FL SWITCH 3012E-2SFX: All versions

FL SWITCH 3006T-2FX ST: All versions

FL SWITCH 3006T-2FX: All versions

FL SWITCH 3008T: All versions

FL SWITCH 3008: All versions

FL SWITCH 3004T-FX ST: All versions

FL SWITCH 3004T-FX: All versions

FL SWITCH 3005T: All versions

FL SWITCH 3005: All versions

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External links
http://ics-cert.us-cert.gov/advisories/ICSA-18-011-03

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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 Internet.

Is there known malware, which exploits this vulnerability?

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