Insufficient Entropy Affecting devise-two-factor package, versions >=2.2.0, <6.0.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published18 Sept 2024
- disclosed17 Sept 2024
- creditGarrett Rappaport
Introduced: 17 Sep 2024
CVE-2024-8796 (opens in a new tab)How to fix?
Upgrade devise-two-factor to version 6.0.0 or higher.
Overview
Affected versions of this package are vulnerable to Insufficient Entropy due to the use of an insufficient default, OTP shared secret length.
Workaround
If upgrading to the fixed version is not possible, users are advised to override the default otp_secret_length attribute in the model when configuring two_factor_authenticable and set it to a value of at least 26 to ensure newly generated shared secrets are at least 128-bits long.