An unprivileged (non-admin) user can exploit an Improper Access Control vulnerability in the Cloudflare WARP Client for Windows (<= 2022.12.582.0) to perform privileged operations with SYSTEM context by working with a combination of opportunistic locks (oplock) and symbolic links (which can both be created by an unprivileged user). After installing the Cloudflare WARP Client (admin privileges required), an MSI-Installer is placed under C:\Windows\Installer. The vulnerability lies in the repair function of this MSI. ImpactAn unprivileged (non-admin) user can exploit this vulnerability to perform privileged operations with SYSTEM context, including deleting arbitrary files and reading arbitrary file content. This can lead to a variety of attacks, including the manipulation of system files and privilege escalation. PatchesA new installer with a fix that addresses this vulnerability was released in version 2023.3.381.0. While the WARP Client itself is not vulnerable (only the installer), users are encouraged to upgrade to the latest version and delete any older installers present in their systems.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: cloudflare

Published: 2023-04-05T15:22:56.317Z

Updated: 2024-08-02T05:49:11.409Z

Reserved: 2023-03-15T13:33:23.768Z

Link: CVE-2023-1412

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-04-05T16:15:07.220

Modified: 2024-11-21T07:39:08.370

Link: CVE-2023-1412

cve-icon Redhat

No data.