CVE-2024-8796 MEDIUM

CVE-2024-8796: Insufficient Default OTP Shared Secret Length

Vendor Devise-Two-Factor
Product devise-two-factor
Weakness CWE-331
Published September 17, 2024
Last update September 20, 2024
View on NVD All CVEs

CVSS base score

6.0/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

September 17, 2024 CVE published
September 20, 2024 Record updated