What is the vulnerability ID for this issue?

The vulnerability ID for this issue is CVE-2023-36673.

What is the severity of CVE-2023-36673?

The severity of CVE-2023-36673 is high with a severity value of 7.3.

What software is affected by CVE-2023-36673?

The Avira Phantom VPN through version 2.23.1 for macOS is affected by CVE-2023-36673.

How does CVE-2023-36673 impact the VPN client?

CVE-2023-36673 insecurely configures the operating system of the VPN client, causing all IP traffic to the VPN server's IP address to be sent in plaintext outside the VPN tunnel.

Is there a fix available for CVE-2023-36673?

It is recommended to update Avira Phantom VPN to a version that is not affected by CVE-2023-36673.

Vulnerability/
CVE-2023-36673

high

7.3

CWE

319

9/8/2023

2/8/2024

CVE-2023-36673

First published: Wed Aug 09 2023(Updated: )

An issue was discovered in Avira Phantom VPN through 2.23.1 for macOS. The VPN client insecurely configures the operating system such that all IP traffic to the VPN server's IP address is sent in plaintext outside the VPN tunnel, even if this traffic is not generated by the VPN client, while simultaneously using plaintext DNS to look up the VPN server's IP address. This allows an adversary to trick the victim into sending traffic to arbitrary IP addresses in plaintext outside the VPN tunnel. NOTE: the tunnelcrack.mathyvanhoef.com website uses this CVE ID to refer more generally to "ServerIP attack, combined with DNS spoofing, that can leak traffic to an arbitrary IP address" rather than to only Avira Phantom VPN.

Credit: cve@mitre.org cve@mitre.org

Affected Software	Affected Version	How to fix
Avira Phantom Vpn	<=2.23.1

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Frequently Asked Questions

What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2023-36673.
What is the severity of CVE-2023-36673?
The severity of CVE-2023-36673 is high with a severity value of 7.3.
What software is affected by CVE-2023-36673?
The Avira Phantom VPN through version 2.23.1 for macOS is affected by CVE-2023-36673.
How does CVE-2023-36673 impact the VPN client?
CVE-2023-36673 insecurely configures the operating system of the VPN client, causing all IP traffic to the VPN server's IP address to be sent in plaintext outside the VPN tunnel.
Is there a fix available for CVE-2023-36673?
It is recommended to update Avira Phantom VPN to a version that is not affected by CVE-2023-36673.

collector/nvd-api
collector/nvd-index
agent/type
agent/weakness
agent/references
agent/severity
agent/author
agent/event
agent/description
agent/last-modified-date
agent/softwarecombine
agent/first-publish-date
agent/tags
collector/mitre-cve
source/MITRE
vendor/avira
canonical/avira phantom vpn
version/avira phantom vpn/2.23.1

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