title: support_uri validation missing in WARP client for Windows
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).
problem types: CWE-20 Improper Input Validation
affected:
{
defaultStatus: unaffected
platforms: Windows
product: WARP
vendor: Cloudflare
versions:
lessThanOrEqual: 2022.10.106.0, status: affected, version: 0, versionType: semver
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: LOW
baseScore: 8.9
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: LOW
scope: CHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions: Update WARP client for Windows to the latest available version.