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How the CVE Works
The vulnerability in OpenBao’s `userpass` authentication method allows attackers to enumerate valid usernames by exploiting timing discrepancies. When a request is made, the system responds slower for existing users (due to credential verification) compared to non-existent users. This timing difference enables attackers to distinguish between valid and invalid usernames, facilitating brute-force or targeted attacks.
DailyCVE Form
Platform: OpenBao
Version: < v2.3.2
Vulnerability: Timing attack
Severity: Medium
Date: 2024-XX-XX
Prediction: Patch expected by 2024-Q2
What Undercode Say
Check OpenBao version
openbao --version
Example rate-limiting config
path "auth/userpass/login/" {
capabilities = ["create"]
rate_limit = 10
}
How Exploit
- Send multiple auth requests
- Measure response times
- Identify valid usernames
Protection from this CVE
- Upgrade to v2.3.2
- Enable rate-limiting
- Use alternative auth
Impact
- User enumeration
- Credential brute-forcing
- Reduced auth security
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Sources:
Reported By: github.com
Extra Source Hub:
Undercode
