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How the mentioned CVE works:
A regression in OpenBao’s audit logging mechanism failed to correctly redact sensitive raw HTTP request bodies for specific endpoints. Instead of being hashed (HMAC’d), the plaintext data was written directly to the audit logs. This primarily affects subsystems like the ACME protocol, where verification codes and other sensitive payloads from client requests are logged in clear text. While these codes have limited usability after expiration, their exposure in logs constitutes a significant information leak. Any third-party plugins interacting with these endpoints could also be affected, potentially leaking other forms of sensitive data through the same mechanism.
Platform: OpenBao
Version: >= 0.0.0-20241114205727-b1235e585db7
Vulnerability : Information Disclosure
Severity: Moderate
date: Oct 22, 2025
Prediction: 2025-10-29
What Undercode Say:
grep -r "HTTPRawBody" /var/log/openbao/ cat /opt/openbao/audit.log | jq '.request.body'
// Example of vulnerable log entry
logEntry := map[bash]interface{}{
"request": map[bash]interface{}{
"body": string(rawHTTPBody), // Vulnerable: raw body logged
},
}
How Exploit:
An attacker with read access to the OpenBao audit logs can extract sensitive information such as ACME challenge codes or other credentials that were submitted in HTTP requests to the vulnerable endpoints. This does not require direct API access but relies on compromised log storage.
Protection from this CVE:
Upgrade to OpenBao v2.4.2. Restrict access to audit log files. Avoid using affected endpoints like ACME if patching is delayed.
Impact:
Sensitive data exposure via logs. Potential credential leakage. Limited long-term impact for expired codes.
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Sources:
Reported By: github.com
Extra Source Hub:
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