Oracle Database Buffer overflow vulnerabilities in procedure DBMS_LOGMNR.ADD_LOGFILE (DB04)
Jan 18, 2007 (Updated Jan 26, 2007)
Risk Level: Medium
Oracle Database Server versions 9i
Remote exploitable: Yes (Authentication to Database Server is needed)
This vulnerability was discovered and researched by Esteban Martínez Fayó of Application Security Inc.
Oracle Database Server provides the DBMS_LOGMNR package that contains procedures used to initialize the LogMiner tool. This package contains the procedure ADD_LOGFILE which is vulnerable to buffer overflow attacks.
Any Oracle database user with EXECUTE privilege on the package SYS.DBMS_LOGMNR can exploit this vulnerability. Exploitation of this vulnerability allows an attacker to execute arbitrary code. It can also be exploited to cause DOS (Denial of service) killing Oracle server process.
Vendor was contacted and a patch was released.
Restrict access to the SYS.DBMS_LOGMNR package.
Apply Oracle Critical Patch Update January 2007 available at Oracle Metalink.