Sie befinden sich aktuell in den Archiven des Blogs Alexander Kornbrust Oracle Security Blog für Juni, 2007.
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- Exploit (23)
- Forensics (7)
- Oracle Security (105)
- passwords (8)
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- Security (22)
- Sentrigo (5)
- software (9)
- source code audit (5)
- SQL Injection (24)
- Tools (24)
- Trainings (3)
- Tutorial (2)
- 18 Nov 2011: DOAG 2011 Presentation "Best of Oracle Security 2011"
- 15 Okt 2011: Oracle Critical Patch Update Pre-Release Announcement - October 2011
- 17 Sep 2011: Disable Auditing and running OS commands using oradebug
- 13 Apr 2011: Blackhat Training "HACKING AND SECURING ORACLE (2 days) "
- 2 Apr 2011: Oracle Database 11.2 Express Edition Beta comes with weak default password
- 23 Mrz 2011: McAfee acquires Sentrigo
- 12 Okt 2010: TDE decrypt utilities and TDE/Password flash demo
- 22 Sep 2010: Marcell published "Writing your own password cracker" presentation
- 21 Sep 2010: Laszlo's presentation "Oracle Post Exploitation Techniques" and Marcel's Sybase ASE Password Cracker
- 10 Sep 2010: Update of "Project Lockdown" released
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Archive für Juni 2007
Oracle CPUs and problems on some platforms
14 Jun 2007 von Alexander Kornbrust.
During our security training we found an interesting forum entry (CPU Oct 2006 Problem) in Oracle Metalink. It seems that a portscan with nmap on AIX 5.2, OAS 10.1.2.0.2 CPUOCT06 causes a denial of service problem on port 443 (HTTPS). It’s not clear if this problem affects all platforms because nobody answered the forum entry.
Normally it is a good idea to apply CPUs as soon but sometimes new bugs are introduced. Often these problems are specific to a special platform. Another example of a bug which was introduced by the CPUOct2006, CPUJan2007 and CPUApr2007 was a rman problem on Windows 32 bit (Rman fails to restore in 9.2.0.8 with CPU patch installed on Windows platform).
Before applying a patch on a production system you should always perform tests.
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Oracle Password Sniffer THC Orakel
4 Jun 2007 von Alexander Kornbrust.
Last week VonJeek from the hacker group THC posted a nice tool and whitepaper about Oracle Password Security. VonJeek describes how to attack the Oracle password from sniffed network traffic (USERNAME, SESSION_ENCRYPTED and PASSWORD_ENCRYPTED).
At the moment the THC website is not available. http://www.thc.org/thc-orakel/
[...]
THC presents a crypto paper analyzing the database authentication mechansim used by oracle. THC further releases practical tools to sniff and crack the password of an oracle database within seconds.
[...]
It is a nice paper and THC-Orakel is a nice tool, even if some of the statements in the paper are not correct (e.g. page 10: "a password must start with a character" no it can also start with a number or page 13: "The cracking of Oracle passwords entered a new era after publication of the Oracle password hashing algorithm on 18 October 2005 by the SANS institute" - JoshWright from SANS only collected public available information like the Oracle Password algorithm and created a summary paper. The Oracle password algorithm and oracle password tools like checkpwd were available since years, e.g. here).
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