dstack is a software development kit (SDK) to simplify the deployment of arbitrary containerized apps into trusted execution environments. In versions of dstack prior to 0.5.4, a malicious host may provide a crafted LUKS2 data volume to a dstack CVM for use as the `/data` mount. The guest will open the volume and write secret data using a volume key known to the attacker, causing disclosure of Wireguard keys and other secret information. The attacker can also pre-load data on the device, which could potentially compromise guest execution. LUKS2 volume metadata is not authenticated and supports null key-encryption algorithms, allowing an attacker to create a volume such that the volume opens (cryptsetup open) without error using any passphrase or token, records all writes in plaintext (or ciphertext with an attacker-known key), and/or contains arbitrary data chosen by the attacker. Version 0.5.4 of dstack contains a patch that addresses LUKS headers.
https://gitlab.com/cryptsetup/cryptsetup/-/merge_requests/837
https://github.com/Dstack-TEE/dstack/security/advisories/GHSA-jxq2-hpw3-m5wf
https://github.com/Dstack-TEE/dstack/commit/e36ad5f732d8821876a861934e1f47cda7b1a130
Published: 2025-09-12
Updated: 2025-09-15
Base Score: 5.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N
Severity: Medium
Base Score: 7.1
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Severity: High
Base Score: 8.5
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Severity: High
EPSS: 0.00009