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CVE-2023-46253
No affected components available
Squidex is an open source headless CMS and content management hub. Affected versions are subject to an arbitrary file write vulnerability in the backup restore feature which allows an authenticated attacker to gain remote code execution (RCE). Squidex allows users with the squidex.admin.restore permission to create and restore backups. Part of these backups are the assets uploaded to an App. For each asset, the backup zip archive contains a .asset file with the actual content of the asset as well as a related AssetCreatedEventV2 event, which is stored in a JSON file. Amongst other things, the JSON file contains the event type (AssetCreatedEventV2), the ID of the asset (46c05041-9588-4179-b5eb-ddfcd9463e1e), its filename (test.txt), and its file version (0). When a backup with this event is restored, the BackupAssets.ReadAssetAsync method is responsible for re-creating the asset. For this purpose, it determines the name of the .asset file in the zip archive, reads its content, and stores the content in the filestore. When the asset is stored in the filestore via the UploadAsync method, the assetId and fileVersion are passed as arguments. These are further passed to the method GetFileName, which determines the filename where the asset should be stored. The assetId is inserted into the filename without any sanitization and an attacker with squidex.admin.restore privileges to run arbitrary operating system commands on the underlying server (RCE).
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs high-level or administrative privileges. No user interaction is needed for the attacker to exploit this vulnerability. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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