CVE-2023-1412

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The vulnerability lies in the repair function of this MSI.</p><h3>Impact</h3><p>An 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.</p><h3>Patches</h3><p>A new installer with a fix that addresses this vulnerability was released in version <strong>2023.3.381.0</strong>. 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.</p></div><br>"}], "value": "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).\n\nAfter 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.\n\nImpactAn 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.\n\nPatchesA new installer with a fix that addresses this vulnerability was released in version 2023.3.381.0. 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The vulnerability lies in the repair function of this MSI.\n\nImpactAn 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.\n\nPatchesA new installer with a fix that addresses this vulnerability was released in version 2023.3.381.0. 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