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CVE-2021-34561

A vulnerability in WirelessHART-Gateway <= 3.0.8 allows to bypass any IP or firewall based access restrictions through DNS rebinding

Published: Aug 31, 2021Updated: Nov 21, 2024 Sources: CVE List NVD csafCWE-350
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.8%
Top 47.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

In PEPPERL+FUCHS WirelessHART-Gateway <= 3.0.8 serious issue exists, if the application is not externally accessible or uses IP-based access restrictions. Attackers can use DNS Rebinding to bypass any IP or firewall based access restrictions that may be in place, by proxying through their target's browser.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:RS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-350

Affected Products

wha-gw-f2d2-0-as-z2-eth firmwarepepperl-fuchsICS / OT / IoT
wha-gw-f2d2-0-as-z2-eth.eip firmwarepepperl-fuchsICS / OT / IoT
WHA-GW-F2D2-0-AS- Z2-ETHPhoenix ContactICS / OT / IoT
WHA-GW-F2D2-0-AS- Z2-ETH.EIPPhoenix ContactICS / OT / IoT
pepperl-fuchscommercialDEICS / OT / IoT
phoenix contactcommercialDEICS / OT / IoTaka phoenixcontact

Exploitability

Official Patch Available
Workaround Available

References

https://cert.vde.com/en-us/advisories/vde-2021-027
cert.vde.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2022/icsa-22-097-01.json
raw.githubusercontent.com
https://www.cisa.gov/news-events/ics-advisories/icsa-22-097-01
cisa.gov
and 33 more references View all →

Timeline

Published
Aug 31, 2021
Last Updated
Nov 21, 2024

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