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Buffer overflow vulnerabilities in package DBMS_SNAP_INTERNAL
April 18, 2007
Risk Level: Medium
Affected versions:
Oracle Database Server versions 8i, 9i and 10gR1
Remote exploitable: Yes (Authentication to Database Server is needed)
Credits:
This vulnerability was discovered and researched by Esteban Martínez Fayó of Application Security Inc.
Details:
Oracle Database Server provides the DBMS_SNAP_INTERNAL package that contains procedures used internally by Oracle. Some procedures of this package have the parameters SNAP_OWNER and SNAP_NAME. These parameters are vulnerable to buffer overflow attacks.
Impact:
Any Oracle database user with EXECUTE privilege on the package SYS.DBMS_SNAP_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 the Oracle server
process. Vendor Status:
Vendor was contacted and a patch was released.
Workaround:
Restrict access to the SYS.DBMS_SNAP_INTERNAL package.
Fix:
Apply Oracle Critical Patch Update April 2007 available at Oracle Metalink.
Links:
http://www.oracle.com/technology/deploy/security/critical-patch-updates/cpuapr2007.html
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