What is CVE-2023-0652?

CVE-2023-0652 is a high-severity vulnerability in Cloudflare Warp, classified under Improper Link Resolution Before File Access. CVSS score: 7.0/10. Published 2023-04-06.

How severe is CVE-2023-0652?

High severity. CVSS v3 base score is 7.0 out of 10.

Vulnerability in Cloudflare Warp

CVE-2023-0652

Due to a hardlink created in the ProgramData folder during the repair process of the software, the installer (MSI) of WARP Client for Windows (<= 2022.12.582.0) allowed a malicious attacker to forge the destination of the hardlink and escalate privileges, overwriting SYSTEM protected files. As Cloudflare WARP client for Windows (up to version 2022.5.309.0) allowed creation of mount points from its ProgramData folder, during installation of the WARP client, it was possible to escalate privileges and overwrite SYSTEM protected files.

EPSS: 0.003 (21.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cloudflare Warp — versions 0

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

cna@cloudflare.com (Release Notes)
cna@cloudflare.com (Product)
cna@cloudflare.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-0652?: CVE-2023-0652 is a high-severity vulnerability in Cloudflare Warp, classified under Improper Link Resolution Before File Access. CVSS score: 7.0/10. Published 2023-04-06.
How severe is CVE-2023-0652?: High severity. CVSS v3 base score is 7.0 out of 10.