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cveMitreCVE-2017-11402
HistoryNov 20, 2017 - 3:29 p.m.

CVE-2017-11402

2017-11-2015:29:00
CWE-20
mitre
web.nvd.nist.gov
24
cve-2017-11402
belden hirschmann
tofino xenon
security appliance
opc classic
netfilter
firewall bypass

CVSS2

10

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.3

Confidence

High

EPSS

0.002

Percentile

64.7%

An issue has been discovered on the Belden Hirschmann Tofino Xenon Security Appliance before 03.2.00. Design flaws in OPC classic and in custom netfilter modules allow an attacker to remotely activate rules on the firewall and to connect to any TCP port of a protected asset, thus bypassing the firewall. The attack methodology is a crafted OPC dynamic port shift.

Affected configurations

Nvd
Node
beldentofino_xenon_security_appliance_firmwareRange3.1.0
AND
beldentofino_xenon_security_applianceMatch-
VendorProductVersionCPE
beldentofino_xenon_security_appliance_firmware*cpe:2.3:o:belden:tofino_xenon_security_appliance_firmware:*:*:*:*:*:*:*:*
beldentofino_xenon_security_appliance-cpe:2.3:h:belden:tofino_xenon_security_appliance:-:*:*:*:*:*:*:*

CVSS2

10

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.3

Confidence

High

EPSS

0.002

Percentile

64.7%

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