CVE-2023-2754

Plaintext transmission of DNS requests in Windows 1.1.1.1 WARP client

CVE-2023-2754 has no fix on record yet for 1 affected product. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

6.8

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0092

60th percentile

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.

Where it's fixed

Product	Fixed in	Fix	Released
No fix yet
Cloudflare WARP (Windows apps)	No fix yet	no-fix	n/a

Details

Published
August 3, 2023
Weakness
CWE-319: Cleartext Transmission of Sensitive Information
Vendor advisory
https://nvd.nist.gov/vuln/detail/CVE-2023-2754

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