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CVE-2023-2754

7.4 · HIGH

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 c…

Published Aug 3, 2023CWE-319EPSS 0.92%

Overview

CVE-2023-2754 is a high-severity vulnerability. It was published on August 3, 2023 and has a CVSS 3.1 base score of 7.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refdevelopers.cloudflare.com/warp-client/GitHubgithub.com/cloudflare/advisories/security/advisories/GHSA-mv6g-7577-vq4wRefinstall.appcenter.ms/orgs/cloudflare/apps/1.1.1.1-windows-1/distribution_groups/releaseRefdevelopers.cloudflare.com/warp-client/GitHubgithub.com/cloudflare/advisories/security/advisories/GHSA-mv6g-7577-vq4wRefinstall.appcenter.ms/orgs/cloudflare/apps/1.1.1.1-windows-1/distribution_groups/release

How CyberStrike helps

Frequently asked questions

What is CVE-2023-2754?

CVE-2023-2754 is a high-severity vulnerability. It was published on August 3, 2023 and has a CVSS 3.1 base score of 7.4 (HIGH).

How severe is CVE-2023-2754?

This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-2754?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-2754?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-2754 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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