Medium severity · published Aug 3, 2023
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,…
6.8
CVSS
0.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Adjacent
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WA
Warp · Cloudflare
before 2023.7.160.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-2754
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-2754
Product
https://developers.cloudflare.com/warp-client/
Vendor Advisory
https://github.com/cloudflare/advisories/security/advisories/GHSA-mv6g-7577-vq4w
Release Notes
https://install.appcenter.ms/orgs/cloudflare/apps/1.1.1.1-windows-1/distribution_groups/release
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