CVE-2021-34561

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

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.

Remediation

Solution:

  • No update available.

Workaround:

  • An external protective measure is required. * Minimize network exposure for affected products and ensure that they are not accessible via the Internet. * Isolate affected products from the corporate network. * If remote access is required, use secure methods such as virtual private networks (VPNs).

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.09%
Third-Party Advisory vde.com
Affected: Phoenix Contact WHA-GW-F2D2-0-AS- Z2-ETH
Affected: Phoenix Contact WHA-GW-F2D2-0-AS- Z2-ETH.EIP
Published at:
Updated at:

References

Link Tags
https://cert.vde.com/en-us/advisories/vde-2021-027 third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-34561?
CVE-2021-34561 has been scored as a high severity vulnerability.
How to fix CVE-2021-34561?
To fix CVE-2021-34561: No update available.
Is CVE-2021-34561 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-34561 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-34561?
CVE-2021-34561 affects Phoenix Contact WHA-GW-F2D2-0-AS- Z2-ETH, Phoenix Contact WHA-GW-F2D2-0-AS- Z2-ETH.EIP.
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