verifydb in Ingres 2.6, Ingres 2006 release 1 (aka 9.0.4), and Ingres 2006 release 2 (aka 9.1.0) on Linux and other Unix platforms sets the ownership or permissions of an iivdb.log file without verifying that it is the application's own log file, which allows local users to overwrite arbitrary files by creating a symlink with an iivdb.log filename.

"Exploitation of this vulnerability allows an attacker to overwrite arbitrary files owned by the "ingres" user. By itself, this vulnerability does not have very serious consequences. However, when combined with the library loading vulnerability, it allows an attacker to execute arbitrary code with root privileges. " (iDefense)

This vulnerability affects all platforms except VMS and Windows

Fixes are available for the current release of Ingres 2006 release 2 (9.1.0), for Ingres 2006 release 1 (9.0.4), and for Ingres 2.6 versions on their respective platforms. The security fixes are available and can be quickly applied with little to no anticipated impact to systems.

Ingres customers with a current support contract can review the following knowledge base document for information on downloading the available fixes:
http://servicedesk.ingres.com/CAisd/pdmweb.ingres?OP=SHOW_DETAIL+PERSID=KD:416012+HTMPL=kt_document_view.htmpl

(ingres.com)