Auditing an Oracle database for security issues is very important. PeteFinnigan.com provides all of the information and tools that you will need Click here for details of PeteFinnigan.com Limited's detailed Oracle database security audit service Click here for details of PeteFinnigan.com Limited's Oracle Security Training Courses
There are 58 visitors online    
Cookie Policy:We only use essential cookies on small sections of this website. For details see here.

Pete Finnigan's Oracle security weblog


Home » Archives » November 2008 » A new exploit to bypass Oracle Database Vault has been released

[Previous entry: "The question of revoking PUBLIC grants"] [Next entry: "Permissions required to run my PL/SQL Oracle password cracker"]

A new exploit to bypass Oracle Database Vault has been released

November 24th, 2008 by Pete


I got an email from Jakub Wartak a few days ago but due to travelling last week in Sweden to teach my class "How to perform an Oracle database security audit" I have not had time to look at it until today. Last week was great in Stockholm as I was able to meet Patrik Karlsson - cqure.net and 0rm - Toolcrypt.org - orabf for a good chat and some beers.

Back to Jakubs post. He has made a post on his blog titled "Oracle Database Vault, not so 0-day anymore, privilege escalation using ptrace(2) from UNIX account" that describes a C program - ora_dv_mem_off.c that can be used to bypass database vault.

This bug highlights, the author states, the fact that database vault does not protect DBA access where the DBA has operating system accounts.

It is an interesting post with some detailed C code exploiting the use of ptrace() to access data and turn off DV. This post somewhat reminds me of what Tanel Poder did over a year ago with the hack to fix the SYSDBA flag (bit) in the PGA using the _oradbg_pathname parameter to call an external debugger to flip the bits.

Nice post Jakub.

November 2008
SMTWTFS
      1
2345678
9101112131415
16171819202122
23242526272829
30      

This is the weblog for Pete Finnigan. Pete works in the area of Oracle security and he specialises in auditing Oracle databases for security issues. This weblog is aimed squarely at those interested in the security of their Oracle databases.

Weblog Home
Weblog Archives


Home
Oracle Security Tools page
Oracle security papers
Oracle Security alerts

Web Development
SQL Server Security

RSS 1.0 FEED
RSS 2.0 FEED
Atom 0.3 FEED
Powered by gm-rss 2.0.0


Valid XHTML 1.0!