Vulnerability in Cloudflare Warp
CVE-2023-2754
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.009 (58.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Cloudflare Warp — versions 0
Weakness classification (CWE)
References
- install.appcenter.ms/orgs/cloudflare/apps/1.1.1.1-windows-1/distribution_groups… (release-notes, Release Notes)
- github.com/cloudflare/advisories/security/advisories/GHSA-mv6g-7577-vq4w (vendor-advisory, Vendor Advisory)
- developers.cloudflare.com/warp-client/ (Product, product)
Frequently asked questions
- What is CVE-2023-2754?
- CVE-2023-2754 is a high-severity vulnerability in Cloudflare Warp, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.4/10. Published 2023-08-03.
- How severe is CVE-2023-2754?
- High severity. CVSS v3 base score is 7.4 out of 10.