CVE-2021-43177 : Vulnerability Insights and Analysis
Learn about CVE-2021-43177, a vulnerability in devise-two-factor allowing the reuse of One-Time-Passwords. Find out how to mitigate and prevent exploitation in affected systems.
In versions of devise-two-factor prior to 4.0.2, a vulnerability exists that allows for the reuse of a One-Time-Password (OTP) for a single immediately trailing interval.
Understanding CVE-2021-43177
This CVE refers to a security vulnerability in the devise-two-factor software.
What is CVE-2021-43177?
The CVE-2021-43177 vulnerability in devise-two-factor allows improper reuse of a One-Time-Password (OTP) due to an incomplete fix for a previous CVE.
The Impact of CVE-2021-43177
The vulnerability can lead to unauthorized access or misuse of the OTP, potentially compromising the security of affected systems.
Technical Details of CVE-2021-43177
This section dives deeper into the technical aspects of the CVE.
Vulnerability Description
The vulnerability enables the reuse of an OTP for a single, immediately trailing interval in versions of devise-two-factor prior to 4.0.2.
Affected Systems and Versions
- Affected Product: devise-two-factor
- Vendor: Tinfoil
- Vulnerable Versions: < 4.0.2
Exploitation Mechanism
The issue arises from an incomplete fix for a prior CVE, CVE-2015-7225, allowing for the misuse of OTPs.
Mitigation and Prevention
Understanding how to mitigate and prevent exploitation is crucial.
Immediate Steps to Take
- Upgrade to version 4.0.2 or later of devise-two-factor.
- Regularly monitor and audit OTP usage.
Long-Term Security Practices
- Implement multi-factor authentication for enhanced security.
- Conduct regular security assessments and updates.
Patching and Updates
Ensure timely application of patches and updates to maintain the security of the software.