Description
rotki before 1.44.2 contains a weak key derivation vulnerability that allows attackers to brute-force backups because the premium sync key is a single unsalted SHA-256 of the user password. Attackers who obtain an uploaded backup blob can run GPU-parallel offline password guessing and decrypt the database containing exchange API keys, secrets, wallet addresses and transaction history.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| rotki | rotki | < 1.44.2 | 1.44.2 |
References
- GitHub Issue #13393 issue-tracking
- https://github.com/rotki/rotki product
- https://github.com/rotki/rotki/pull/13401 patch issue-tracking
- https://github.com/rotki/rotki/blob/v1.44.1/rotkehlchen/crypto.py#L17-L45 technical-description
- https://github.com/rotki/rotki/blob/v1.44.1/rotkehlchen/data_handler.py#L263-L294 technical-description
- v1.44.2 Release Notes release-notes
- VulnCheck Advisory: rotki before 1.44.2 Weak Key Derivation for Premium Cloud Backup Encryption third-party-advisory