CVE-2021-34561
A vulnerability in WirelessHART-Gateway <= 3.0.8 allows to bypass any IP or firewall based access restrictions through DNS rebinding
Severity Score
8.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
En PEPPERL+FUCHS WirelessHART-Gateway versiones anteriores a 3.0.8 incluyéndola, se presenta un problema grave, si la aplicación no es accesible externamente o usa restricciones de acceso basadas en IP. Los atacantes pueden usar DNS Rebinding para omitir cualquier restricción de acceso basada en IP o firewall que pueda presentarse, al hacer proxy mediante el navegador de su objetivo
*Credits:
Pepperl+Fuchs reported this vulnerability. CERT@VDE coordinated.
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-06-10 CVE Reserved
- 2021-08-31 CVE Published
- 2024-09-17 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-350: Reliance on Reverse DNS Resolution for a Security-Critical Action
CAPEC
References (1)
| URL | Tag | Source |
|---|---|---|
| https://cert.vde.com/en-us/advisories/vde-2021-027 | Third Party Advisory |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Pepperl-fuchs Search vendor "Pepperl-fuchs" | Wha-gw-f2d2-0-as-z2-eth Firmware Search vendor "Pepperl-fuchs" for product "Wha-gw-f2d2-0-as-z2-eth Firmware" | <= 3.0.8 Search vendor "Pepperl-fuchs" for product "Wha-gw-f2d2-0-as-z2-eth Firmware" and version " <= 3.0.8" | - |
Affected
| in | Pepperl-fuchs Search vendor "Pepperl-fuchs" | Wha-gw-f2d2-0-as-z2-eth Search vendor "Pepperl-fuchs" for product "Wha-gw-f2d2-0-as-z2-eth" | - | - |
Safe
|
| Pepperl-fuchs Search vendor "Pepperl-fuchs" | Wha-gw-f2d2-0-as-z2-eth.eip Firmware Search vendor "Pepperl-fuchs" for product "Wha-gw-f2d2-0-as-z2-eth.eip Firmware" | <= 3.0.8 Search vendor "Pepperl-fuchs" for product "Wha-gw-f2d2-0-as-z2-eth.eip Firmware" and version " <= 3.0.8" | - |
Affected
| in | Pepperl-fuchs Search vendor "Pepperl-fuchs" | Wha-gw-f2d2-0-as-z2-eth.eip Search vendor "Pepperl-fuchs" for product "Wha-gw-f2d2-0-as-z2-eth.eip" | - | - |
Safe
|