Oracle Database Buffer overflow vulnerabilities in procedures of package DBMS_CAPTURE_ADM_INTERNAL (DB09)
Jan 18, 2007 (Updated Jan 26, 2007)
Risk Level: Medium
Oracle Database Server versions 9iR2 and 10gR1
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_CAPTURE_ADM_INTERNAL package that is used internally by the Streams Change Data Capture component. This package contains the procedures CREATE_CAPTURE, ALTER_CAPTURE, ABORT_TABLE_INSTANTIATION that are vulnerable to buffer overflow attacks.
Any Oracle database user with EXECUTE privilege on the package SYS.DBMS_CAPTURE_ADM_INTERNAL 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.
Apply Oracle Critical Patch Update January 2007 available at Oracle Metalink.