CVE-2023-2754: Plaintext transmission of DNS requests in Windows 1.1.1.1 WARP client
First published: Thu Aug 03 2023(Updated: )
The Cloudflare WARP client for Windows assigns loopback IPv4 addresses for the DNS Servers, since WARP acts as local DNS server that performs DNS queries in a secure manner, however, if a user is connected to WARP over an IPv6-capable network, te WARP client did not assign loopback IPv6 addresses but Unique Local Addresses, which under certain conditions could point towards unknown devices in the same local network which enables an Attacker to view DNS queries made by the device.
Credit: cna@cloudflare.com cna@cloudflare.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cloudflare Warp | <2023.7.160.0 |
Remedy
Users are encouraged to update to the latest WARP Client (Windows) version available: 2023.7.160.0
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Reference Links
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2023-2754.
What is the title of the vulnerability?
The title of the vulnerability is 'The Cloudflare WARP client for Windows assigns loopback IPv4 addresses for the DNS Servers since WARP...'
What is the severity of CVE-2023-2754?
The severity of CVE-2023-2754 is high.
What software is affected by CVE-2023-2754?
The Cloudflare WARP client for Windows is affected by CVE-2023-2754.
How can I fix CVE-2023-2754?
To fix CVE-2023-2754, update your Cloudflare WARP client for Windows to version 2023.7.160.0 or higher.
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