Vulnerability · Published Jan 11, 2023 · Assigned by cloudflare

CVE-2022-4428support_uri validation missing in WARP client for Windows

High 8.9

In plain English

A high-severity improper input validation in WARP from Cloudflare. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).

Severity (CVSS 3.1)8.9High

Exploit odds (30 days)0.7%top 46.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

support_uri parameter in the WARP client local settings file (mdm.xml) lacked proper validation which allowed for privilege escalation and launching an arbitrary executable on the local machine upon clicking on the "Send feedback" option. An attacker with access to the local file system could use a crafted XML config file pointing to a malicious file or set a local path to the executable using Cloudflare Zero Trust Dashboard (for Zero Trust enrolled clients).

Affected products (as reported)

Vendor	Product	Versions
Cloudflare	WARP	0 – through 2022.10.106.0

Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L

References

https://github.com/cloudflare/advisories/security/advisories/GHSA-h3j3-fhqg-66rh