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Cryptographic flaws in Oracle Database authentication protocol
Recently a security researcher (Esteban Martinez Fayo) made the world aware of a problem with the O5LOGON Oracle database authentication protocol (used in 11g – 11.1 & 11.2). This problem, known as CVE-2012-3137, makes it relatively simple for attackers to … Continue reading
Posted in Database, Security
Tagged 11.1, 11.2, 1492721.1, 192, ADR, AES, AUTH_SESSKEY, AUTH_VFR_DATA, brute force, CVE-2012-3137, database, digest, encryption, Esteban Martinez Fayo, flaw, hashes, LinkedIn, O5LOGON, oracle, password, SALT, SHA-1, stealth, TNS
12 Comments
adrci – No ADR base is set
Some time ago we had a problem using the adrci (ADR Command Interpreter) to look into some diagnostic information for a listener. After staring up the tool it came back with the warning “No ADR base is set”, even while … Continue reading
Posted in Database
Tagged ADR, adrci, adrci_dir.mif, database, LinkedIn, oracle, troubleshooting
3 Comments
Simulating ORA-errors
Sometimes it can be useful to simulate a problem in your database by simulating an ORA-error. After we had a nasty bug with Grid Control (GC suddenly wasn’t able to monitor the alertlog of 10.2.0.5 databases anymore, see my post … Continue reading
Posted in Database
Tagged ADR, alertlog, database, dbms_system.ksdwrt, enterprise manager, grid control, LinkedIn, ORA, oracle, simulation, troubleshooting
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