A buffer overflow vulnerability exists in the TNS Listener component of Oracle9i Database. This vulnerability could allow an unauthenticated, remote attacker to execute arbitrary code with the privileges of the TNS Listener process or cause a denial of service.
Oracle9i Database authenticates and manages database connections via Oracle Transparent Network Substrate (TNS ) Listeners. According to a report by NGSSoftware, a buffer overflow condition occurs when a TNS Listener process attempts to log an error condition caused by a TNS request containing an overly long SERVICE_NAME parameter. An attacker may be able to exploit this vulnerability by sending a specially crafted TNS request to a vulnerable Oracle Listener.
According Oracle Security Alert #34, Microsoft Windows and IBM VM versions of Oracle9i Database (9.0.x) are affected by this vulnerability.
An unauthenticated remote attacker could execute arbitrary code or cause a denial of service on a vulnerable system. Oracle Listener processes may run with SYSTEM privileges on Windows NT and Windows 2000 systems.
The CERT/CC thanks David Litchfield of NGSSoftware for information used in this document.
This document was written by Art Manion.
|Date First Published:||2002-06-04|
|Date Last Updated:||2002-06-13 22:57 UTC|