CVE-2021-34562 : Vulnerability Insights and Analysis

A vulnerability in PEPPERL+FUCHS WirelessHART-Gateway 3.0.8 allows for arbitrary JavaScript injection into the application's response.

Understanding CVE-2021-34562

This CVE-2021-34562 impacts Phoenix Contact's WHA-GW-F2D2-0-AS- Z2-ETH and WHA-GW-F2D2-0-AS- Z2-ETH.EIP products.

What is CVE-2021-34562?

The vulnerability in WirelessHART-Gateway 3.0.8 enables the injection of arbitrary JavaScript into the application's response, as reported by Pepperl+Fuchs.

The Impact of CVE-2021-34562

With a CVSS base score of 5.4, this medium severity vulnerability requires user interaction and can lead to low confidentiality and integrity impacts.

Technical Details of CVE-2021-34562

The following technical details outline the specifics of this vulnerability:

Vulnerability Description

The CVE-2021-34562 vulnerability allows attackers to inject arbitrary JavaScript code into the WirelessHART-Gateway 3.0.8 response.

Affected Systems and Versions

Phoenix Contact's WHA-GW-F2D2-0-AS- Z2-ETH and WHA-GW-F2D2-0-AS- Z2-ETH.EIP versions 3.0.8 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability over a network with low complexity, no privileges required, and user interaction.

Mitigation and Prevention

To safeguard against CVE-2021-34562, consider the following measures:

Immediate Steps to Take

Implement an external protective measure to minimize network exposure.
Ensure affected products are not accessible via the Internet.
Isolate affected products from the corporate network.
Use secure remote access methods like VPNs.

Long-Term Security Practices

Regularly monitor and update security protocols.
Conduct security assessments and audits.
Educate users on safe browsing and network practices.

Patching and Updates

As of now, there are no available updates to address this vulnerability.