Metrics
Affected Vendors & Products
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2024-2856 | Under the default configuration, Devise-Two-Factor versions >= 2.2.0 & < 6.0.0 generate TOTP shared secrets that are 120 bits instead of the 128-bit minimum defined by RFC 4226. Using a shared secret shorter than the minimum to generate a multi-factor authentication code could make it easier for an attacker to guess the shared secret and generate valid TOTP codes. |
Github GHSA |
GHSA-qjxf-mc72-wjr2 | Devise-Two-Factor Authentication Uses Insufficient Default OTP Shared Secret Length |
Ubuntu USN |
USN-7050-1 | Devise-Two-Factor vulnerabilities |
Solution
Devise-Two-Factor should be upgraded to version v6.0.0 as soon as possible. After upgrading, the length of shared secrets and TOTP URLs generated by the library will increase since the new shared secrets will be longer. After upgrading or implementing the workaround, applications using Devise-Two-Factor may wish to migrate users to the new OTP length to provide increased protection for those accounts. Turning off OTP for users by setting otp_required_for_login to false is not recommended since it would leave accounts unprotected. However, you may wish to implement application logic that checks the length of a user's shared secret and prompts users to re-enroll in OTP.
Workaround
If upgrading is not possible, you can 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.
Mon, 14 Jul 2025 13:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
epss
|
epss
|
Mon, 30 Sep 2024 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Tinfoilsecurity
Tinfoilsecurity devise-two-factor |
|
| CPEs | cpe:2.3:a:tinfoilsecurity:devise-two-factor:*:*:*:*:*:*:*:* cpe:2.3:a:tinfoilsecurity:devise-two-factor:1.0.0:*:*:*:*:*:*:* |
|
| Vendors & Products |
Tinfoilsecurity
Tinfoilsecurity devise-two-factor |
Wed, 18 Sep 2024 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 17 Sep 2024 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Under the default configuration, Devise-Two-Factor versions >= 2.2.0 & < 6.0.0 generate TOTP shared secrets that are 120 bits instead of the 128-bit minimum defined by RFC 4226. Using a shared secret shorter than the minimum to generate a multi-factor authentication code could make it easier for an attacker to guess the shared secret and generate valid TOTP codes. | |
| Title | Insufficient Default OTP Shared Secret Length | |
| Weaknesses | CWE-331 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: SNPS
Published:
Updated: 2024-09-20T19:43:21.263Z
Reserved: 2024-09-13T16:52:10.095Z
Link: CVE-2024-8796
Updated: 2024-09-18T14:00:47.475Z
Status : Analyzed
Published: 2024-09-17T18:15:05.443
Modified: 2024-09-30T14:10:38.937
Link: CVE-2024-8796
No data.
OpenCVE Enrichment
No data.
EUVD
Github GHSA
Ubuntu USN