Listen to this Post
How the CVE Works
The vulnerability in Hashicorp Vault’s TOTP Secrets Engine allows time-based one-time passwords (TOTP) to be reused within their validity period due to improper validation checks. Attackers exploiting this flaw could bypass multi-factor authentication (MFA) by replaying previously used codes before they expire. The issue stems from insufficient code expiration enforcement in the validation endpoint, permitting unauthorized access if intercepted or regenerated within the same time window.
DailyCVE Form
Platform: Hashicorp Vault
Version: <1.20.1, <1.19.7, <1.18.12, <1.16.23
Vulnerability: TOTP code reuse
Severity: Moderate
Date: Aug 1, 2025
Prediction: Patch expected by Aug 15, 2025
What Undercode Say
Check Vault version vault version Verify TOTP engine status vault secrets list -detailed Mitigation: Upgrade command vault operator upgrade -version=1.20.1
How Exploit
1. Intercept valid TOTP code.
2. Reuse code before expiry.
3. Bypass MFA authentication.
Protection from this CVE
- Upgrade to Vault 1.20.1/1.19.7/1.18.12/1.16.23.
- Enforce strict TOTP validation policies.
- Monitor authentication logs for replay attempts.
Impact
- MFA bypass possible.
- Unauthorized access to secured systems.
- Compromised credential integrity.
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
